Lenovo Yoga 2 13 with Debian

Ritesh Raj Sarraf's picture

I recently acquired a Lenovo Yoga 2 13. While, at the time, the Yoga 3 was available, I decided to go for Yoga 2 13. The Yoga 3 comes with the newer Core M Broadwell family, which, in my opinion, doesn't really bring any astounding benefits.

The Yoga 2 13 comes in mulitple variants worldwide. Infact these hardware variations have different effets when run under Linux.

My varaint of Yoga 2 13 is:

CPU: Intel(R) Core(TM) i7-4510U CPU @ 2.00GHz

RAM: 8 GiB - Occupying 2 slots

Memory Controller Information
        Supported Interleave: One-way Interleave
        Current Interleave: One-way Interleave
        Maximum Memory Module Size: 8192 MB
        Maximum Total Memory Size: 16384 MB
       
Handle 0x0006, DMI type 6, 12 bytes
Handle 0x0007, DMI type 6, 12 bytes

The usual PCI devices:

rrs@learner:~$ lspci
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4)
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
17:37 ♒♒♒   ☺    

And the storage devices

Device Model:     WDC WD5000M22K-24Z1LT0-SSHD-16GB

Device Model:     KINGSTON SM2280S3120G

 

Storage

The drive runs into serious performance problems when its SSHD's NCQ (mis)feature is under use in Linux <= 4.0.

[28974.232550] ata2.00: configured for UDMA/133
[28974.232565] ahci 0000:00:1f.2: port does not support device sleep
[28983.680955] ata1.00: exception Emask 0x10 SAct 0x7fffffff SErr 0x400100 action 0x6 frozen
[28983.681000] ata1.00: irq_stat 0x08000000, interface fatal error
[28983.681027] ata1: SError: { UnrecovData Handshk }
[28983.681052] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.681082] ata1.00: cmd 61/40:00:b8:84:88/05:00:0a:00:00/40 tag 0 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.681152] ata1.00: status: { DRDY }
[28983.681171] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.681202] ata1.00: cmd 61/40:08:f8:89:88/05:00:0a:00:00/40 tag 1 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.681271] ata1.00: status: { DRDY }
[28983.681289] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.681316] ata1.00: cmd 61/40:10:38:8f:88/05:00:0a:00:00/40 tag 2 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.681387] ata1.00: status: { DRDY }
[28983.681407] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.681435] ata1.00: cmd 61/40:18:78:94:88/05:00:0a:00:00/40 tag 3 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.697642] ata1.00: status: { DRDY }
[28983.697643] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.697646] ata1.00: cmd 61/40:c8:38:65:88/05:00:0a:00:00/40 tag 25 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.697647] ata1.00: status: { DRDY }
[28983.697648] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.697651] ata1.00: cmd 61/40:d0:78:6a:88/05:00:0a:00:00/40 tag 26 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.697651] ata1.00: status: { DRDY }
[28983.697652] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.697656] ata1.00: cmd 61/40:d8:b8:6f:88/05:00:0a:00:00/40 tag 27 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.697657] ata1.00: status: { DRDY }
[28983.697658] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.697661] ata1.00: cmd 61/40:e0:f8:74:88/05:00:0a:00:00/40 tag 28 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.697662] ata1.00: status: { DRDY }
[28983.697663] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.697666] ata1.00: cmd 61/40:e8:38:7a:88/05:00:0a:00:00/40 tag 29 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.697667] ata1.00: status: { DRDY }
[28983.697668] ata1.00: failed command: WRITE FPDMA QUEUED
[28983.697672] ata1.00: cmd 61/40:f0:78:7f:88/05:00:0a:00:00/40 tag 30 ncq 688128 out
                        res 40/00:3c:78:a9:88/00:00:0a:00:00/40 Emask 0x10 (ATA bus error)
[28983.697672] ata1.00: status: { DRDY }
[28983.697676] ata1: hard resetting link
[28984.017356] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[28984.022612] ata1.00: configured for UDMA/133
[28984.022740] ata1: EH complete
[28991.611732] Suspending console(s) (use no_console_suspend to debug)
[28992.183822] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[28992.186569] sd 1:0:0:0: [sdb] Stopping disk
[28992.186604] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[28992.189594] sd 0:0:0:0: [sda] Stopping disk
[28992.967426] PM: suspend of devices complete after 1351.349 msecs
[28992.999461] PM: late suspend of devices complete after 31.990 msecs
[28993.000058] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
[28993.000306] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
[28993.016463] PM: noirq suspend of devices complete after 16.978 msecs
[28993.017024] ACPI: Preparing to enter system sleep state S3
[28993.017349] PM: Saving platform NVS memory
[28993.017357] Disabling non-boot CPUs ...
[28993.017389] intel_pstate CPU 1 exiting
[28993.018727] kvm: disabling virtualization on CPU1
[28993.019320] smpboot: CPU 1 is now offline
[28993.019646] intel_pstate CPU 2 exiting

In the interim, to overcome this problem, we can force the device to run in degraded mode. I'm not sure if it is really the degraded mode, or the device was falsely advertised as a 6 GiB capable device. Time will tell, but for now, force it to run in 3 GiB mode, and so far, I haven't run into the above mentioned probems. To force 3 GiB speed, apply the following.

rrs@learner:~$ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-4.0.4+ root=/dev/mapper/sdb_crypt ro cgroup_enable=memory swapaccount=1 rootflags=data=writeback libata.force=1:3 quiet
16:42 ♒♒♒   ☺    

And then verify it... As you can see below, I've forced it for ata1 because I want my SSD drive to run at full-speed. I've done enough I/O, which earlier resulted in the kernel spitting the SATA errors. With this workaround, the kernel does not spit any error messages.

[    1.273365] libata version 3.00 loaded.
[    1.287290] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 4 ports 6 Gbps 0x3 impl SATA mode
[    1.288238] ata1: FORCE: PHY spd limit set to 3.0Gbps
[    1.288240] ata1: SATA max UDMA/133 abar m2048@0xb051b000 port 0xb051b100 irq 41
[    1.288242] ata2: SATA max UDMA/133 abar m2048@0xb051b000 port 0xb051b180 irq 41
[    1.288244] ata3: DUMMY
[    1.288245] ata4: DUMMY
[    1.606971] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
[    1.607906] ata1.00: ATA-9: WDC WD5000M22K-24Z1LT0-SSHD-16GB, 02.01A03, max UDMA/133
[    1.607910] ata1.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
[    1.608856] ata1.00: configured for UDMA/133
[    1.609106] scsi 0:0:0:0: Direct-Access     ATA      WDC WD5000M22K-2 1A03 PQ: 0 ANSI: 5
[    1.927167] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[    1.928980] ata2.00: ATA-8: KINGSTON SM2280S3120G, S8FM06.A, max UDMA/133
[    1.928983] ata2.00: 234441648 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[    1.929616] ata2.00: configured for UDMA/133

And the throughput you get out of your WD SATA SSHD drive, with capability set to 3.0 GiB is:

rrs@learner:/media/SSHD/tmp$ while true; do dd if=/dev/zero of=foo.img bs=1M count=20000; sync; rm -rf foo.img; sync; done
20000+0 records in
20000+0 records out
20971520000 bytes (21 GB) copied, 202.014 s, 104 MB/s
20000+0 records in
20000+0 records out
20971520000 bytes (21 GB) copied, 206.111 s, 102 MB/s

Hannes Reinecke has submitted patches for NCQ enhancements, for Linux 4.1, which I hope will resolve these problems. Another option is to disable NCQ for the drive, or else blacklist the make/model in driver/ata/libata-core.c

By the time I finished this blog entry draft, I had tests to conclude that this did not look like an NCQ problem. Because in degraded mode too, it runs with NCQ enabled (check above).

rrs@learner:~$ sudo fstrim -vv /media/SSHD
/media/SSHD: 268.2 GiB (287930949632 bytes) trimmed
16:58 ♒♒♒   ☺    

rrs@learner:~$ sudo fstrim -vv /
[sudo] password for rrs:
/: 64 GiB (68650749952 bytes) trimmed
16:56 ♒♒♒   ☺    

Another interesting feature of this drive is support for TRIM / DISCARD. This drive's FTL accepts the TRIM command. Ofcourse, you need to ensure that you have discard enabled in all the layers. In my case, SATA + Device Mapper (Crypt and LVM) + File System (ext4)

Display

The overall display of this device is amazing. It is large enough to give you vibrant look. At 1920x1080 resolution, things look good. The display support was available out-of-the-box.

There were some suspend / resume hangs  that occured with kernels < 4.x, during suspend / resume. The issue was root caused and fixed for Linux 4.0.

You may still notice the following kernel messages, though not problematic to me so far.

[28977.518114] PM: thaw of devices complete after 3607.979 msecs
[28977.590389] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[28977.590582] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[28977.591095] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[28977.591185] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[28977.591368] acpi device:30: Cannot transition to power state D3cold for parent in (unknown)
[28977.591911] pci_bus 0000:01: Allocating resources
[28977.591933] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[28977.592093] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[28977.592401] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment

You may need to disable the Intel Management Engine Interface (mei.ko), incase you run into suspend/resume problems.

rrs@learner:/media/SSHD/tmp$ cat /etc/modprobe.d/intel-mei-blacklist.conf
blacklist mei
blacklist mei-me
17:01 ♒♒♒   ☺    

You may also run into the following Kernel Oops during suspend/resume. Below, you see 2 interation of sleep because it first hibernates and then sleeps (s2both).

[  180.470206] Syncing filesystems ... done.
[  180.473337] Freezing user space processes ... (elapsed 0.001 seconds) done.
[  180.475210] PM: Marking nosave pages: [mem 0x00000000-0x00000fff]
[  180.475213] PM: Marking nosave pages: [mem 0x0006f000-0x0006ffff]
[  180.475215] PM: Marking nosave pages: [mem 0x00088000-0x000fffff]
[  180.475220] PM: Marking nosave pages: [mem 0x97360000-0x97b5ffff]
[  180.475274] PM: Marking nosave pages: [mem 0x9c36f000-0x9cffefff]
[  180.475356] PM: Marking nosave pages: [mem 0x9d000000-0xffffffff]
[  180.476877] PM: Basic memory bitmaps created
[  180.477003] PM: Preallocating image memory... done (allocated 380227 pages)
[  180.851800] PM: Allocated 1520908 kbytes in 0.37 seconds (4110.56 MB/s)
[  180.851802] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[  180.853355] Suspending console(s) (use no_console_suspend to debug)
[  180.853520] wlan0: deauthenticating from c4:6e:1f:d0:67:26 by local choice (Reason: 3=DEAUTH_LEAVING)
[  180.864159] cfg80211: Calling CRDA to update world regulatory domain
[  181.172222] PM: freeze of devices complete after 319.294 msecs
[  181.196080] ------------[ cut here ]------------
[  181.196124] WARNING: CPU: 3 PID: 3707 at drivers/gpu/drm/i915/intel_display.c:7904 hsw_enable_pc8+0x659/0x7c0 [i915]()
[  181.196125] SPLL enabled
[  181.196159] Modules linked in: rfcomm ctr ccm bnep pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) bridge stp llc xt_conntrack iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_CHECKSUM xt_tcpudp iptable_mangle ip_tables x_tables nls_utf8 nls_cp437 vfat fat rtsx_usb_ms memstick snd_hda_codec_hdmi joydev mousedev hid_sensor_rotation hid_sensor_incl_3d hid_sensor_als hid_sensor_accel_3d hid_sensor_magn_3d hid_sensor_gyro_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf industrialio hid_sensor_iio_common iTCO_wdt iTCO_vendor_support hid_multitouch x86_pkg_temp_thermal intel_powerclamp coretemp intel_rapl iosf_mbi kvm_intel kvm btusb hid_sensor_hub bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops
[  181.196203]  videobuf2_core v4l2_common videodev media pcspkr evdev mac_hid arc4 psmouse serio_raw efivars i2c_i801 rtl8723be btcoexist rtl8723_common rtl_pci rtlwifi mac80211 snd_soc_rt5640 cfg80211 snd_soc_rl6231 snd_hda_codec_realtek i915 snd_soc_core snd_hda_codec_generic ideapad_laptop ac snd_compress dw_dmac sparse_keymap drm_kms_helper rfkill battery dw_dmac_core snd_hda_intel snd_pcm_dmaengine snd_soc_sst_acpi snd_hda_controller video 8250_dw regmap_i2c snd_hda_codec drm snd_hwdep snd_pcm spi_pxa2xx_platform i2c_designware_platform soc_button_array snd_timer i2c_designware_core snd i2c_algo_bit soundcore shpchp lpc_ich button processor fuse ipv6 autofs4 ext4 crc16 jbd2 mbcache btrfs xor raid6_pq algif_skcipher af_alg dm_crypt dm_mod sg usbhid sd_mod rtsx_usb_sdmmc rtsx_usb crct10dif_pclmul
[  181.196220]  crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ahci libahci libata xhci_pci ehci_pci xhci_hcd ehci_hcd scsi_mod usbcore usb_common thermal fan thermal_sys hwmon i2c_hid hid i2c_core sdhci_acpi sdhci mmc_core gpio_lynxpoint
[  181.196224] CPU: 3 PID: 3707 Comm: kworker/u16:7 Tainted: G           O    4.0.4+ #14
[  181.196225] Hardware name: LENOVO 20344/INVALID, BIOS 96CN29WW(V1.15) 10/16/2014
[  181.196230] Workqueue: events_unbound async_run_entry_fn
[  181.196233]  0000000000000000 ffffffffa0706f68 ffffffff81522198 ffff880064debc88
[  181.196235]  ffffffff8106c5b1 ffff880251460000 ffff880250f83b68 ffff880250f83b78
[  181.196237]  ffff880250f83800 0000000000000001 ffffffff8106c62a ffffffffa071407c
[  181.196238] Call Trace:
[  181.196248]  [<ffffffff81522198>] ? dump_stack+0x40/0x50
[  181.196251]  [<ffffffff8106c5b1>] ? warn_slowpath_common+0x81/0xb0
[  181.196254]  [<ffffffff8106c62a>] ? warn_slowpath_fmt+0x4a/0x50
[  181.196278]  [<ffffffffa06ae349>] ? hsw_enable_pc8+0x659/0x7c0 [i915]
[  181.196289]  [<ffffffffa0643ee0>] ? intel_suspend_complete+0xe0/0x6e0 [i915]
[  181.196300]  [<ffffffffa0644501>] ? i915_drm_suspend_late+0x21/0x90 [i915]
[  181.196311]  [<ffffffffa0644690>] ? i915_pm_poweroff_late+0x40/0x40 [i915]
[  181.196318]  [<ffffffff813fa7ba>] ? dpm_run_callback+0x4a/0x100
[  181.196321]  [<ffffffff813fb010>] ? __device_suspend_late+0xa0/0x180
[  181.196324]  [<ffffffff813fb10e>] ? async_suspend_late+0x1e/0xa0
[  181.196326]  [<ffffffff8108b973>] ? async_run_entry_fn+0x43/0x160
[  181.196330]  [<ffffffff81083a5d>] ? process_one_work+0x14d/0x3f0
[  181.196332]  [<ffffffff81084463>] ? worker_thread+0x53/0x480
[  181.196334]  [<ffffffff81084410>] ? rescuer_thread+0x300/0x300
[  181.196338]  [<ffffffff81089191>] ? kthread+0xc1/0xe0
[  181.196341]  [<ffffffff810890d0>] ? kthread_create_on_node+0x180/0x180
[  181.196346]  [<ffffffff81527898>] ? ret_from_fork+0x58/0x90
[  181.196349]  [<ffffffff810890d0>] ? kthread_create_on_node+0x180/0x180
[  181.196350] ---[ end trace 8e339004db298838 ]---
[  181.220094] PM: late freeze of devices complete after 47.936 msecs
[  181.220972] PM: noirq freeze of devices complete after 0.875 msecs
[  181.221577] ACPI: Preparing to enter system sleep state S4
[  181.221886] PM: Saving platform NVS memory
[  181.222702] Disabling non-boot CPUs ...
[  181.222731] intel_pstate CPU 1 exiting
[  181.224041] kvm: disabling virtualization on CPU1
[  181.224680] smpboot: CPU 1 is now offline
[  181.225121] intel_pstate CPU 2 exiting
[  181.226407] kvm: disabling virtualization on CPU2
[  181.227025] smpboot: CPU 2 is now offline
[  181.227441] intel_pstate CPU 3 exiting
[  181.227728] Broke affinity for irq 19
[  181.227747] Broke affinity for irq 41
[  181.228771] kvm: disabling virtualization on CPU3
[  181.228793] smpboot: CPU 3 is now offline
[  181.229624] PM: Creating hibernation image:
[  181.563651] PM: Need to copy 379053 pages
[  181.563655] PM: Normal pages needed: 379053 + 1024, available pages: 1697704
[  182.472910] PM: Hibernation image created (379053 pages copied)
[  181.232347] PM: Restoring platform NVS memory
[  181.233171] Enabling non-boot CPUs ...
[  181.233246] x86: Booting SMP configuration:
[  181.233248] smpboot: Booting Node 0 Processor 1 APIC 0x1
[  181.246771] kvm: enabling virtualization on CPU1
[  181.249339] CPU1 is up
[  181.249389] smpboot: Booting Node 0 Processor 2 APIC 0x2
[  181.262313] kvm: enabling virtualization on CPU2
[  181.264853] CPU2 is up
[  181.264903] smpboot: Booting Node 0 Processor 3 APIC 0x3
[  181.277831] kvm: enabling virtualization on CPU3
[  181.280317] CPU3 is up
[  181.288471] ACPI: Waking up from system sleep state S4
[  182.340655] PM: noirq thaw of devices complete after 0.637 msecs
[  182.378087] PM: early thaw of devices complete after 37.428 msecs
[  182.378436] rtlwifi: rtlwifi: wireless switch is on
[  182.451021] rtc_cmos 00:01: System wakeup disabled by ACPI
[  182.697575] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
[  182.697617] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[  182.699248] ata1.00: configured for UDMA/133
[  182.699911] ata2.00: configured for UDMA/133
[  182.699917] ahci 0000:00:1f.2: port does not support device sleep
[  186.059539] PM: thaw of devices complete after 3685.338 msecs
[  186.134292] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  186.134479] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  186.134992] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  186.135080] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  186.135266] acpi device:30: Cannot transition to power state D3cold for parent in (unknown)
[  186.135950] pci_bus 0000:01: Allocating resources
[  186.135974] pcieport 0000:00:1c.0: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 01] add_size 200000
[  186.135980] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  186.136049] pcieport 0000:00:1c.0: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[  186.136072] pcieport 0000:00:1c.0: BAR 15: assigned [mem 0x9fb00000-0x9fcfffff 64bit pref]
[  186.136174] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  186.136490] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  199.454497] Suspending console(s) (use no_console_suspend to debug)
[  200.024190] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[  200.024356] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[  200.025359] sd 1:0:0:0: [sdb] Stopping disk
[  200.028701] sd 0:0:0:0: [sda] Stopping disk
[  201.106085] PM: suspend of devices complete after 1651.336 msecs
[  201.106591] ------------[ cut here ]------------
[  201.106628] WARNING: CPU: 0 PID: 3725 at drivers/gpu/drm/i915/intel_display.c:7904 hsw_enable_pc8+0x659/0x7c0 [i915]()
[  201.106628] SPLL enabled
[  201.106656] Modules linked in: rfcomm ctr ccm bnep pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) bridge stp llc xt_conntrack iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_CHECKSUM xt_tcpudp iptable_mangle ip_tables x_tables nls_utf8 nls_cp437 vfat fat rtsx_usb_ms memstick snd_hda_codec_hdmi joydev mousedev hid_sensor_rotation hid_sensor_incl_3d hid_sensor_als hid_sensor_accel_3d hid_sensor_magn_3d hid_sensor_gyro_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf industrialio hid_sensor_iio_common iTCO_wdt iTCO_vendor_support hid_multitouch x86_pkg_temp_thermal intel_powerclamp coretemp intel_rapl iosf_mbi kvm_intel kvm btusb hid_sensor_hub bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops
[  201.106694]  videobuf2_core v4l2_common videodev media pcspkr evdev mac_hid arc4 psmouse serio_raw efivars i2c_i801 rtl8723be btcoexist rtl8723_common rtl_pci rtlwifi mac80211 snd_soc_rt5640 cfg80211 snd_soc_rl6231 snd_hda_codec_realtek i915 snd_soc_core snd_hda_codec_generic ideapad_laptop ac snd_compress dw_dmac sparse_keymap drm_kms_helper rfkill battery dw_dmac_core snd_hda_intel snd_pcm_dmaengine snd_soc_sst_acpi snd_hda_controller video 8250_dw regmap_i2c snd_hda_codec drm snd_hwdep snd_pcm spi_pxa2xx_platform i2c_designware_platform soc_button_array snd_timer i2c_designware_core snd i2c_algo_bit soundcore shpchp lpc_ich button processor fuse ipv6 autofs4 ext4 crc16 jbd2 mbcache btrfs xor raid6_pq algif_skcipher af_alg dm_crypt dm_mod sg usbhid sd_mod rtsx_usb_sdmmc rtsx_usb crct10dif_pclmul
[  201.106711]  crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ahci libahci libata xhci_pci ehci_pci xhci_hcd ehci_hcd scsi_mod usbcore usb_common thermal fan thermal_sys hwmon i2c_hid hid i2c_core sdhci_acpi sdhci mmc_core gpio_lynxpoint
[  201.106714] CPU: 0 PID: 3725 Comm: kworker/u16:25 Tainted: G        W  O    4.0.4+ #14
[  201.106715] Hardware name: LENOVO 20344/INVALID, BIOS 96CN29WW(V1.15) 10/16/2014
[  201.106720] Workqueue: events_unbound async_run_entry_fn
[  201.106723]  0000000000000000 ffffffffa0706f68 ffffffff81522198 ffff880064dd7c88
[  201.106725]  ffffffff8106c5b1 ffff880251460000 ffff880250f83b68 ffff880250f83b78
[  201.106727]  ffff880250f83800 0000000000000002 ffffffff8106c62a ffffffffa071407c
[  201.106728] Call Trace:
[  201.106737]  [<ffffffff81522198>] ? dump_stack+0x40/0x50
[  201.106740]  [<ffffffff8106c5b1>] ? warn_slowpath_common+0x81/0xb0
[  201.106742]  [<ffffffff8106c62a>] ? warn_slowpath_fmt+0x4a/0x50
[  201.106765]  [<ffffffffa06ae349>] ? hsw_enable_pc8+0x659/0x7c0 [i915]
[  201.106776]  [<ffffffffa0643ee0>] ? intel_suspend_complete+0xe0/0x6e0 [i915]
[  201.106786]  [<ffffffffa0644501>] ? i915_drm_suspend_late+0x21/0x90 [i915]
[  201.106797]  [<ffffffffa0644690>] ? i915_pm_poweroff_late+0x40/0x40 [i915]
[  201.106802]  [<ffffffff813fa7ba>] ? dpm_run_callback+0x4a/0x100
[  201.106805]  [<ffffffff813fb010>] ? __device_suspend_late+0xa0/0x180
[  201.106809]  [<ffffffff813fb10e>] ? async_suspend_late+0x1e/0xa0
[  201.106811]  [<ffffffff8108b973>] ? async_run_entry_fn+0x43/0x160
[  201.106813]  [<ffffffff81083a5d>] ? process_one_work+0x14d/0x3f0
[  201.106815]  [<ffffffff81084463>] ? worker_thread+0x53/0x480
[  201.106818]  [<ffffffff81084410>] ? rescuer_thread+0x300/0x300
[  201.106821]  [<ffffffff81089191>] ? kthread+0xc1/0xe0
[  201.106824]  [<ffffffff810890d0>] ? kthread_create_on_node+0x180/0x180
[  201.106827]  [<ffffffff81527898>] ? ret_from_fork+0x58/0x90
[  201.106830]  [<ffffffff810890d0>] ? kthread_create_on_node+0x180/0x180
[  201.106832] ---[ end trace 8e339004db298839 ]---
[  201.130052] PM: late suspend of devices complete after 23.960 msecs
[  201.130725] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
[  201.130885] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
[  201.146986] PM: noirq suspend of devices complete after 16.930 msecs
[  201.147591] ACPI: Preparing to enter system sleep state S3
[  201.147942] PM: Saving platform NVS memory
[  201.147948] Disabling non-boot CPUs ...
[  201.147999] intel_pstate CPU 1 exiting
[  201.149324] kvm: disabling virtualization on CPU1
[  201.149337] smpboot: CPU 1 is now offline
[  201.149640] intel_pstate CPU 2 exiting
[  201.151096] kvm: disabling virtualization on CPU2
[  201.151108] smpboot: CPU 2 is now offline
[  201.152017] intel_pstate CPU 3 exiting
[  201.153250] kvm: disabling virtualization on CPU3
[  201.153256] smpboot: CPU 3 is now offline
[  201.156229] ACPI: Low-level resume complete
[  201.156307] PM: Restoring platform NVS memory
[  201.160033] CPU0 microcode updated early to revision 0x1c, date = 2014-07-03
[  201.160190] Enabling non-boot CPUs ...
[  201.160241] x86: Booting SMP configuration:
[  201.160243] smpboot: Booting Node 0 Processor 1 APIC 0x1
[  201.172665] kvm: enabling virtualization on CPU1
[  201.174982] CPU1 is up
[  201.175013] smpboot: Booting Node 0 Processor 2 APIC 0x2
[  201.187569] CPU2 microcode updated early to revision 0x1c, date = 2014-07-03
[  201.188796] kvm: enabling virtualization on CPU2
[  201.191130] CPU2 is up
[  201.191158] smpboot: Booting Node 0 Processor 3 APIC 0x3
[  201.203297] kvm: enabling virtualization on CPU3
[  201.205679] CPU3 is up
[  201.210414] ACPI: Waking up from system sleep state S3
[  201.224617] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI
[  201.332523] xhci_hcd 0000:00:14.0: System wakeup disabled by ACPI
[  201.332634] PM: noirq resume of devices complete after 121.623 msecs
[  201.372718] PM: early resume of devices complete after 40.058 msecs
[  201.372892] rtlwifi: rtlwifi: wireless switch is on
[  201.373270] sd 0:0:0:0: [sda] Starting disk
[  201.373271] sd 1:0:0:0: [sdb] Starting disk
[  201.445954] rtc_cmos 00:01: System wakeup disabled by ACPI
[  201.692510] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[  201.694719] ata2.00: configured for UDMA/133
[  201.694724] ahci 0000:00:1f.2: port does not support device sleep
[  201.836724] usb 2-4: reset high-speed USB device number 2 using xhci_hcd
[  201.890158] psmouse serio1: synaptics: queried max coordinates: x [..5702], y [..4730]
[  201.930768] psmouse serio1: synaptics: queried min coordinates: x [1242..], y [1124..]
[  202.076784] usb 2-5: reset full-speed USB device number 3 using xhci_hcd
[  202.205100] usb 2-5: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes
[  202.316799] usb 2-7: reset full-speed USB device number 5 using xhci_hcd
[  202.444945] usb 2-7: No LPM exit latency info found, disabling LPM.
[  202.556817] usb 2-8: reset full-speed USB device number 6 using xhci_hcd
[  202.908691] usb 2-6: reset high-speed USB device number 4 using xhci_hcd
[  203.932602] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
[  204.044890] ata1.00: configured for UDMA/133
[  206.228698] PM: resume of devices complete after 4855.892 msecs
[  206.380738] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  206.383152] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  206.385775] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  206.388066] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  206.390415] acpi device:30: Cannot transition to power state D3cold for parent in (unknown)
[  206.393078] pci_bus 0000:01: Allocating resources
[  206.393098] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  206.395470] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  206.397927] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[  206.518516] Restarting kernel threads ... done.
[  206.518812] PM: Basic memory bitmaps freed
[  206.518816] Restarting tasks ... done.

There is one more occasional Kernel Oops (below), which I believe again has to do with Intel.

[ 8770.745396] ------------[ cut here ]------------
[ 8770.745441] WARNING: CPU: 0 PID: 7206 at drivers/gpu/drm/i915/intel_display.c:9756 intel_check_page_flip+0xd2/0xe0 [i915]()
[ 8770.745444] Kicking stuck page flip: queued at 466186, now 466191
[ 8770.745445] Modules linked in: cpuid rfcomm ctr ccm bnep pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) bridge stp llc xt_conntrack iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_CHECKSUM xt_tcpudp iptable_mangle ip_tables x_tables nls_utf8 nls_cp437 vfat fat rtsx_usb_ms memstick snd_hda_codec_hdmi joydev mousedev hid_sensor_rotation hid_sensor_incl_3d hid_sensor_als hid_sensor_accel_3d hid_sensor_magn_3d hid_sensor_gyro_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf industrialio hid_sensor_iio_common iTCO_wdt iTCO_vendor_support hid_multitouch x86_pkg_temp_thermal intel_powerclamp coretemp intel_rapl iosf_mbi kvm_intel kvm btusb hid_sensor_hub bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops
[ 8770.745484]  videobuf2_core v4l2_common videodev media pcspkr evdev mac_hid arc4 psmouse serio_raw efivars i2c_i801 rtl8723be btcoexist rtl8723_common rtl_pci rtlwifi mac80211 snd_soc_rt5640 cfg80211 snd_soc_rl6231 snd_hda_codec_realtek i915 snd_soc_core snd_hda_codec_generic ideapad_laptop ac snd_compress dw_dmac sparse_keymap drm_kms_helper rfkill battery dw_dmac_core snd_hda_intel snd_pcm_dmaengine snd_soc_sst_acpi snd_hda_controller video 8250_dw regmap_i2c snd_hda_codec drm snd_hwdep snd_pcm spi_pxa2xx_platform i2c_designware_platform soc_button_array snd_timer i2c_designware_core snd i2c_algo_bit soundcore shpchp lpc_ich button processor fuse ipv6 autofs4 ext4 crc16 jbd2 mbcache btrfs xor raid6_pq algif_skcipher af_alg dm_crypt dm_mod sg usbhid sd_mod rtsx_usb_sdmmc rtsx_usb crct10dif_pclmul
[ 8770.745536]  crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ahci libahci libata xhci_pci ehci_pci xhci_hcd ehci_hcd scsi_mod usbcore usb_common thermal fan thermal_sys hwmon i2c_hid hid i2c_core sdhci_acpi sdhci mmc_core gpio_lynxpoint
[ 8770.745561] CPU: 0 PID: 7206 Comm: icedove Tainted: G        W  O    4.0.4+ #14
[ 8770.745563] Hardware name: LENOVO 20344/INVALID, BIOS 96CN29WW(V1.15) 10/16/2014
[ 8770.745565]  0000000000000000 ffffffffa0706f68 ffffffff81522198 ffff88025f203dc8
[ 8770.745569]  ffffffff8106c5b1 ffff880250f83800 ffff880254dcc000 0000000000000000
[ 8770.745572]  0000000000000000 0000000000000000 ffffffff8106c62a ffffffffa0709d50
[ 8770.745575] Call Trace:
[ 8770.745577]  <IRQ>  [<ffffffff81522198>] ? dump_stack+0x40/0x50
[ 8770.745592]  [<ffffffff8106c5b1>] ? warn_slowpath_common+0x81/0xb0
[ 8770.745595]  [<ffffffff8106c62a>] ? warn_slowpath_fmt+0x4a/0x50
[ 8770.745616]  [<ffffffffa06a0bb3>] ? __intel_pageflip_stall_check+0x113/0x120 [i915]
[ 8770.745634]  [<ffffffffa06af042>] ? intel_check_page_flip+0xd2/0xe0 [i915]
[ 8770.745652]  [<ffffffffa067cde1>] ? ironlake_irq_handler+0x2e1/0x1010 [i915]
[ 8770.745657]  [<ffffffff81092d1a>] ? check_preempt_curr+0x5a/0xa0
[ 8770.745663]  [<ffffffff812d66c2>] ? timerqueue_del+0x22/0x70
[ 8770.745668]  [<ffffffff810bb7d5>] ? handle_irq_event_percpu+0x75/0x190
[ 8770.745672]  [<ffffffff8101b945>] ? read_tsc+0x5/0x10
[ 8770.745676]  [<ffffffff810bb928>] ? handle_irq_event+0x38/0x50
[ 8770.745680]  [<ffffffff810be841>] ? handle_edge_irq+0x71/0x120
[ 8770.745685]  [<ffffffff810153bd>] ? handle_irq+0x1d/0x30
[ 8770.745689]  [<ffffffff8152a866>] ? do_IRQ+0x46/0xe0
[ 8770.745694]  [<ffffffff8152866d>] ? common_interrupt+0x6d/0x6d
[ 8770.745695]  <EOI>  [<ffffffff8152794d>] ? system_call_fastpath+0x16/0x1b
[ 8770.745701] ---[ end trace 8e339004db29883a ]---

Network

In my case, the laptop came with the Realtek Wireless device (details above in lspci output). Note: The machine has no wired interface.

While the Intel Wifi devices shipped with this laptop have their own share of problems, this device (rtl8723be) works out of the box. But only for a while. There is no certain pattern on what triggers the bug, but once triggered, the network just freezes. Nothing is logged.

If your Yoga 2 13 came with the RTL chip, the following workaround may help avoid the network issues.

rrs@learner:/media/SSHD/tmp$ cat /etc/modprobe.d/rtl8723be.conf
options rtl8723be fwlps=0
17:06 ♒♒♒   ☺    

MCE

Almost every boot, eventually, the kernel reports MCE errors. Not something I understand well, but so far, it hasn't caused any visible issues. And from what I have googled so far, nobody seems to have fixed it anywhere

So, with fingers crossed, lets just hope this never translates into a real problem.

What the kernel reports of the CPU's capabilities.

[    0.041496] mce: CPU supports 7 MCE banks
[  299.540930] mce: [Hardware Error]: Machine check events logged

The MCE logs extracted from the buffer.

mcelog: failed to prefill DIMM database from DMI data
Hardware event. This is not a software error.
MCE 0
CPU 0 BANK 5
MISC 38a0000086 ADDR fef81880
TIME 1432455005 Sun May 24 13:40:05 2015
MCG status:
MCi status:
Error overflow
Uncorrected error
MCi_MISC register valid
MCi_ADDR register valid
Processor context corrupt
MCA: corrected filtering (some unreported errors in same region)
Generic CACHE Level-2 Generic Error
STATUS ee0000000040110a MCGSTATUS 0
MCGCAP c07 APICID 0 SOCKETID 0
CPUID Vendor Intel Family 6 Model 69
Hardware event. This is not a software error.
MCE 1
CPU 0 BANK 6
MISC 78a0000086 ADDR fef81780
TIME 1432455005 Sun May 24 13:40:05 2015
MCG status:
MCi status:
Uncorrected error
MCi_MISC register valid
MCi_ADDR register valid
Processor context corrupt
MCA: corrected filtering (some unreported errors in same region)
Generic CACHE Level-2 Generic Error
STATUS ae0000000040110a MCGSTATUS 0
MCGCAP c07 APICID 0 SOCKETID 0
CPUID Vendor Intel Family 6 Model 69
Hardware event. This is not a software error.
MCE 2
CPU 0 BANK 5
MISC 38a0000086 ADDR fef81880
TIME 1432455114 Sun May 24 13:41:54 2015
MCG status:
MCi status:
Error overflow
Uncorrected error
MCi_MISC register valid
MCi_ADDR register valid
Processor context corrupt
MCA: corrected filtering (some unreported errors in same region)
Generic CACHE Level-2 Generic Error
STATUS ee0000000040110a MCGSTATUS 0
MCGCAP c07 APICID 0 SOCKETID 0
CPUID Vendor Intel Family 6 Model 69
Hardware event. This is not a software error.
MCE 3
CPU 0 BANK 6
MISC 78a0000086 ADDR fef81780
TIME 1432455114 Sun May 24 13:41:54 2015
MCG status:
MCi status:
Uncorrected error
MCi_MISC register valid
MCi_ADDR register valid
Processor context corrupt
MCA: corrected filtering (some unreported errors in same region)
Generic CACHE Level-2 Generic Error
STATUS ae0000000040110a MCGSTATUS 0
MCGCAP c07 APICID 0 SOCKETID 0
CPUID Vendor Intel Family 6 Model 69

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Comments

Ritesh Raj Sarraf's picture

One more Kernel Oops today,

One more Kernel Oops today, this time with the network.

[ 1757.200810] wlan0: deauthenticating from c4:6e:1f:d0:67:26 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 1778.424842] cfg80211: Calling CRDA to update world regulatory domain
[ 1778.428723] cfg80211: World regulatory domain updated:
[ 1778.428730] cfg80211:  DFS Master region: unset
[ 1778.428733] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 1778.428738] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 1778.428743] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[ 1778.428747] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[ 1778.428752] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[ 1778.428757] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[ 1778.428761] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[ 1778.428765] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[ 1778.428769] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[ 1780.226742] ------------[ cut here ]------------
[ 1780.226757] WARNING: CPU: 1 PID: 1761 at kernel/softirq.c:150 __local_bh_enable_ip+0x62/0x90()
[ 1780.226760] Modules linked in: ctr ccm rfcomm bnep pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) bridge stp llc xt_conntrack iptable_filter ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_CHECKSUM xt_tcpudp iptable_mangle ip_tables x_tables nls_utf8 nls_cp437 vfat fat snd_hda_codec_hdmi rtsx_usb_ms memstick hid_sensor_als hid_sensor_rotation hid_sensor_incl_3d hid_sensor_gyro_3d hid_sensor_magn_3d hid_sensor_accel_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf industrialio hid_sensor_iio_common joydev mousedev iTCO_wdt iTCO_vendor_support x86_pkg_temp_thermal intel_powerclamp coretemp intel_rapl uvcvideo iosf_mbi videobuf2_vmalloc videobuf2_memops kvm_intel videobuf2_core v4l2_common videodev media kvm
[ 1780.226831]  arc4 hid_sensor_hub btusb evdev mac_hid rtl8723be btcoexist psmouse rtl8723_common rtl_pci bluetooth pcspkr rtlwifi serio_raw efivars i2c_i801 hid_multitouch mac80211 snd_soc_rt5640 snd_soc_rl6231 cfg80211 snd_soc_core snd_compress snd_pcm_dmaengine ideapad_laptop snd_hda_codec_realtek sparse_keymap rfkill i915 snd_hda_codec_generic battery regmap_i2c snd_hda_intel drm_kms_helper ac dw_dmac snd_soc_sst_acpi snd_hda_controller drm i2c_designware_platform 8250_dw dw_dmac_core video snd_hda_codec i2c_designware_core snd_hwdep spi_pxa2xx_platform i2c_algo_bit soc_button_array snd_pcm snd_timer shpchp snd button soundcore lpc_ich processor fuse ipv6 autofs4 ext4 crc16 jbd2 mbcache btrfs xor raid6_pq algif_skcipher af_alg dm_crypt dm_mod sg usbhid sd_mod rtsx_usb_sdmmc rtsx_usb crct10dif_pclmul
[ 1780.226913]  crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ahci libahci libata xhci_pci ehci_pci xhci_hcd ehci_hcd scsi_mod usbcore thermal usb_common fan thermal_sys hwmon i2c_hid hid i2c_core sdhci_acpi sdhci mmc_core gpio_lynxpoint
[ 1780.226952] CPU: 1 PID: 1761 Comm: NetworkManager Tainted: G           O    4.0.4+ #14
[ 1780.226956] Hardware name: LENOVO 20344/INVALID, BIOS 96CN29WW(V1.15) 10/16/2014
[ 1780.226959]  0000000000000000 ffffffff8172fa1a ffffffff81522198 0000000000000000
[ 1780.226965]  ffffffff8106c5b1 0000000000000200 ffffffff818c4800 ffffffffa0afa9c1
[ 1780.226971]  ffff88025437c8b0 ffff880254371ae0 ffffffff81070112 ffff880225b05a40
[ 1780.226977] Call Trace:
[ 1780.226988]  [<ffffffff81522198>] ? dump_stack+0x40/0x50
[ 1780.226994]  [<ffffffff8106c5b1>] ? warn_slowpath_common+0x81/0xb0
[ 1780.227007]  [<ffffffffa0afa9c1>] ? rtl_pci_reset_trx_ring+0x251/0x330 [rtl_pci]
[ 1780.227014]  [<ffffffff81070112>] ? __local_bh_enable_ip+0x62/0x90
[ 1780.227023]  [<ffffffffa0850519>] ? destroy_conntrack+0x79/0x100 [nf_conntrack]
[ 1780.227030]  [<ffffffff8149c707>] ? nf_conntrack_destroy+0x17/0x30
[ 1780.227037]  [<ffffffff81458215>] ? skb_release_head_state+0x85/0xd0
[ 1780.227043]  [<ffffffff8145826e>] ? skb_release_all+0xe/0x30
[ 1780.227049]  [<ffffffff814582de>] ? kfree_skb+0x2e/0x80
[ 1780.227060]  [<ffffffffa0afa9c1>] ? rtl_pci_reset_trx_ring+0x251/0x330 [rtl_pci]
[ 1780.227070]  [<ffffffffa0afaab7>] ? rtl_pci_start+0x17/0xb0 [rtl_pci]
[ 1780.227082]  [<ffffffffa08a3c4c>] ? rtl_op_start+0x4c/0x80 [rtlwifi]
[ 1780.227104]  [<ffffffffa097b541>] ? ieee80211_do_open+0x301/0xd90 [mac80211]
[ 1780.227112]  [<ffffffff8146da57>] ? __dev_open+0xb7/0x130
[ 1780.227117]  [<ffffffff8146dd36>] ? __dev_change_flags+0x96/0x160
[ 1780.227122]  [<ffffffff8146de23>] ? dev_change_flags+0x23/0x60
[ 1780.227130]  [<ffffffff8147affd>] ? do_setlink+0x32d/0xa70
[ 1780.227139]  [<ffffffff812f9e06>] ? nla_put+0x36/0x40
[ 1780.227146]  [<ffffffff8147b98a>] ? rtnetlink_put_metrics+0x10a/0x1c0
[ 1780.227153]  [<ffffffff8147bf85>] ? rtnl_newlink+0x545/0x8e0
[ 1780.227163]  [<ffffffff8109ec27>] ? enqueue_entity+0x2e7/0x9b0
[ 1780.227170]  [<ffffffff81479e8d>] ? rtnetlink_rcv_msg+0x8d/0x250
[ 1780.227176]  [<ffffffff812e3eb9>] ? rhashtable_lookup_compare+0x59/0x90
[ 1780.227183]  [<ffffffff81479e00>] ? rtnetlink_rcv+0x30/0x30
[ 1780.227189]  [<ffffffff8149a2b0>] ? netlink_rcv_skb+0xb0/0xd0
[ 1780.227195]  [<ffffffff81479df4>] ? rtnetlink_rcv+0x24/0x30
[ 1780.227200]  [<ffffffff81499a57>] ? netlink_unicast+0x107/0x1a0
[ 1780.227206]  [<ffffffff81499fd6>] ? netlink_sendmsg+0x4e6/0x600
[ 1780.227214]  [<ffffffff812058c3>] ? ep_poll_callback+0x113/0x160
[ 1780.227223]  [<ffffffff8144f15e>] ? do_sock_sendmsg+0x7e/0xa0
[ 1780.227228]  [<ffffffff81450bd0>] ? ___sys_sendmsg+0x300/0x310
[ 1780.227235]  [<ffffffff8144f15e>] ? do_sock_sendmsg+0x7e/0xa0
[ 1780.227243]  [<ffffffff811df1c1>] ? __fget_light+0x21/0x60
[ 1780.227248]  [<ffffffff8145068c>] ? SYSC_sendto+0x17c/0x1b0
[ 1780.227254]  [<ffffffff81451550>] ? __sys_sendmsg+0x40/0x80
[ 1780.227262]  [<ffffffff8152794d>] ? system_call_fastpath+0x16/0x1b
[ 1780.227266] ---[ end trace 9a81923c834fd40e ]---
[ 1781.905103] wlan0: authenticate with c4:6e:1f:d0:67:26
[ 1782.599737] wlan0: send auth to c4:6e:1f:d0:67:26 (try 1/3)
[ 1782.601671] wlan0: authenticated
[ 1782.603808] wlan0: associate with c4:6e:1f:d0:67:26 (try 1/3)
[ 1782.607948] wlan0: RX AssocResp from c4:6e:1f:d0:67:26 (capab=0x431 status=0 aid=4)
[ 1782.608116] wlan0: associated
Ritesh Raj Sarraf's picture

The WDC drive that came with

The WDC drive that came with the ultrabook claims to be very power efficient. The mantra for power savings in spinning drives is to spin down the drive and keep it down as long as possible.

On Linux, a lot of people have reported issues against WDC drives, that in fact led to WDC making an official statement. If you read through the recommendation, you should realize how behind Linux is, in terms of providing a full fledged framework for IHVs, for functionality like these. Disabling the idle timer is NOT the solution, it just will never part your head / spin down your drive, and eventually lead to other wear and tear.

In Laptop Mode Tools, for years, we chose to buffer as much I/O as possible, when on battery. As I write this comment, I have the following:

rrs@learner:~$ mount | grep -i commit
/dev/mapper/SSHDCrypt-ROOT on /media/SSHD type ext4 (rw,relatime,errors=remount-ro,commit=600,data=ordered)
/dev/sda6 on /boot type ext4 (rw,relatime,commit=600,data=ordered)

This allows for my drive to spin down further, when on battery.

 

But the drive has very high local cycle count.

rrs@learner:~$ sudo smartctl -A /dev/sda | grep "^193"
193 Load_Cycle_Count        0x0032   195   195   000    Old_age   Always       -       17014
14:20 ♒♒♒  ☺    

That for a device, that is 4 months old. Should I disable the idle timer ? I need to investigate more.

Ritesh Raj Sarraf's picture

So there happen to be

So there happen to be countless articles on the web, all howling the same statement: Disable idle3 timer on WDC drives. I think this is tricky and will vary from device families and use cases.

If you are using a WDC device as a NAS / Data storage for XBMC, disabling the idle3 timers may be a good bet. You may lower the LCC, but ultimately, you'll consume more power. Perhaps increasing it to something reasonable to your use case is what you'd want.

On the other hands, if your Laptop / Ultrabook came with WDC, lowering the idle3 timer may be VERY DANGEROUS. Take this device, Lenovo Yoga, as an example. The device is built to be used in different form factors for a variety of use cases. Cases where you move the device around like a tablet. A spinning drive, with the head not parked, can cause more trouble.

My ideal wishlist. Wish the sensors on the Lenovo Yoga 2 13, all worked under Linux. Then we could tap on those sensors, and then accordingly park the head. Nothing new here. ThinkPads did it for years. In a way, I'm disappointed that Lenovo pulled that functionality out of the Yoga series.

Ritesh Raj Sarraf's picture

Since the Linux DEs aren't

Since the Linux DEs aren't yet Tablet Mode ready, I took the plunge to take my chances and increased the WD Idle Timer from the stock 4secods to 12 secods. And there were some very interesting behavior.....

  • My expectation was to see the head park less often. Period.
  • The good news is, it drastically decreased the latency. Earlier, if not in the buffer cache, a directory listing would take 2 seconds. Now, it is less than .5 secs.

In case if you are wondering on how to do that change in Linux, there's a tool named idle3-tools. It is already packaged in Debian.

Ritesh Raj Sarraf's picture

You may, upon suspend/resume,

You may, upon suspend/resume, run into the following error at times.

[21611.907208] mce: [Hardware Error]: Machine check events logged
[22282.374761] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[23279.863787] xhci_hcd 0000:00:14.0: xHC is not running.
[23300.102752] xhci_hcd 0000:00:14.0: Port resume took longer than 20000 msec, port status = 0x400603
[23391.078456] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[23587.975361] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[23956.824864] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[24063.947105] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[24348.672901] xhci_hcd 0000:00:14.0: xHC is not running.
[24368.912272] xhci_hcd 0000:00:14.0: Port resume took longer than 20000 msec, port status = 0x400603
[24474.575365] wlan0: AP c4:6e:1f:d0:67:26 changed bandwidth, new config is 2442 MHz, width 1 (2442/0 MHz)
[24476.522240] wlan0: AP c4:6e:1f:d0:67:26 changed bandwidth, new config is 2442 MHz, width 2 (2432/0 MHz)
[24556.394897] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[25094.290426] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[25170.006698] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[25864.536380] pci_pm_runtime_suspend(): hcd_pci_runtime_suspend+0x0/0x60 [usbcore] returns -16
[26631.312036] usb 1-8: USB disconnect, device number 6
[26632.176748] usb 1-8: new full-speed USB device number 8 using xhci_hcd
[26632.374564] usb 1-8: New USB device found, idVendor=048d, idProduct=8350
[26632.374569] usb 1-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[26632.374572] usb 1-8: Product: ITE Device(8350)
[26632.374575] usb 1-8: Manufacturer: ITE Tech. Inc.

 

This seems to be caused because the device/driver is having issues with power savings.

If you run Laptop Mode Tools, you can blacklist such devices.

Ritesh Raj Sarraf's picture

To pin-point precise, in my

To pin-point precise, in my case, the USB device which has flaky LPM is:

[26632.374572] usb 1-8: Product: ITE Device(8350)
[26632.374575] usb 1-8: Manufacturer: ITE Tech. Inc.

That, along with the SATA Rotational SSHD Drive, the blacklist config looks like:

rrs@learner:~$ cat /etc/laptop-mode/conf.d/runtime-pm.conf
#
# Configuration file for Laptop Mode Tools module runtime-pm
#
# For more information, consult the laptop-mode.conf(8) manual page.
#
..... snipped......

# The list of Device IDs that should not use autosuspend. Use system commands or
# look into sysfs to find out the IDs of your devices.
# Example: AUTOSUSPEND_DEVID_BLACKLIST="046d:c025 0123:abcd"
AUTOSUSPEND_RUNTIME_DEVID_BLACKLIST="0000:00:1f.2 048d:8350"
Ritesh Raj Sarraf's picture

Accelerometer

For the accelerometer to work, the following patch is needed. Hopefully it'll make into 4.3.

 

From 78466e63250f12f4ed006dff75c23248320e4cf0 Mon Sep 17 00:00:00 2001

From: Ritesh Raj Sarraf <rrs@debian.org>
Date: Sun, 4 Oct 2015 22:39:35 +0530
Subject: [PATCH] Add quirk for Lenovo Yoga 2 with ITE Chips
 
Signed-off-by: Ritesh Raj Sarraf <rrs@debian.org>
---
 drivers/hid/hid-ids.h        | 1 +
 drivers/hid/hid-sensor-hub.c | 3 +++
 2 files changed, 4 insertions(+)
 
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index f769208..127c777 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -510,6 +510,7 @@
 
 #define USB_VENDOR_ID_ITE               0x048d
 #define USB_DEVICE_ID_ITE_LENOVO_YOGA   0x8386
+#define USB_DEVICE_ID_ITE_LENOVO_YOGA2  0x8350
 
 #define USB_VENDOR_ID_JABRA 0x0b0e
 #define USB_DEVICE_ID_JABRA_SPEAK_410 0x0412
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
index a76eb2a..05afa25 100644
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -777,6 +777,9 @@ static const struct hid_device_id sensor_hub_devices[] = {
  { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE,
  USB_DEVICE_ID_ITE_LENOVO_YOGA),
  .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
+ { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE,
+ USB_DEVICE_ID_ITE_LENOVO_YOGA2),
+ .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
  { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID,
      HID_ANY_ID) },
  { }
-- 
2.5.3
 
Ritesh Raj Sarraf's picture

It is queued in Jiri Kosina's

It is queued in Jiri Kosina's tree. And he already mentioned that he'll ask Linus for a pull if he has more patches lined up. Otherwise, it'll have to wait until 4.4.

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