Lenovo t460s dock undocks / redocks repeatedly

codemac · 2016-08-29 18:11:05

Hi all!

Haven't been around here in a while, haven't really had many issues to worry about.. but alas, I've hit something quite odd:

[20783.387820] usb 1-4: USB disconnect, device number 80
[20783.387825] usb 1-4.4: USB disconnect, device number 81
[20783.387827] usb 1-4.4.1: USB disconnect, device number 82
[20783.462679] usb 1-4.4.2: USB disconnect, device number 83
[20783.462698] usb 1-4.4.2.2: USB disconnect, device number 84
[20783.533830] usb 2-4: USB disconnect, device number 20
[20783.536692] thinkpad_acpi: undocked from hotplug port replicator
[20783.740047] e1000e: enp0s31f6 NIC Link is Down
[20784.007302] thinkpad_acpi: EC reports that Thermal Table has changed
[20791.063762] thinkpad_acpi: docked into hotplug port replicator
[20791.653785] thinkpad_acpi: undocked from hotplug port replicator
[20791.713778] thinkpad_acpi: docked into hotplug port replicator
[20791.782945] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* failed to get link status
[20791.881759] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to get link status
[20791.897477] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[20792.495854] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* failed to get link status
[20792.557307] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to get link status
[20793.057095] e1000e 0000:00:1f.6: Failed to restore TIMINCA clock rate delta: -22
[20793.320592] usb 2-4: new SuperSpeed USB device number 21 using xhci_hcd
[20793.339978] hub 2-4:1.0: USB hub found
[20793.340373] hub 2-4:1.0: 4 ports detected
[20793.407840] thinkpad_acpi: EC reports that Thermal Table has changed
[20793.563806] usb 1-4: new high-speed USB device number 85 using xhci_hcd
[20793.738906] hub 1-4:1.0: USB hub found
[20793.739240] hub 1-4:1.0: 4 ports detected
[20794.023829] usb 1-4.4: new high-speed USB device number 86 using xhci_hcd
[20794.114594] hub 1-4.4:1.0: USB hub found
[20794.114689] hub 1-4.4:1.0: 3 ports detected
[20794.393849] usb 1-4.4.1: new low-speed USB device number 87 using xhci_hcd
[20794.493447] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1:1.0/0003:046D:C05A.0028/input/input58
[20794.494155] hid-generic 0003:046D:C05A.0028: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:14.0-4.4.1/input0
[20794.573865] usb 1-4.4.2: new full-speed USB device number 88 using xhci_hcd
[20794.671256] hub 1-4.4.2:1.0: USB hub found
[20794.671575] hub 1-4.4.2:1.0: 4 ports detected
[20794.943886] usb 1-4.4.2.2: new full-speed USB device number 89 using xhci_hcd
[20795.039101] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.2/1-4.4.2.2/1-4.4.2.2:1.0/0003:05F3:0007.0029/input/input59
[20795.091230] hid-generic 0003:05F3:0007.0029: input,hidraw1: USB HID v1.00 Keyboard [HID 05f3:0007] on usb-0000:00:14.0-4.4.2.2/input0
[20795.097947] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.2/1-4.4.2.2/1-4.4.2.2:1.1/0003:05F3:0007.002A/input/input60
[20795.150784] hid-generic 0003:05F3:0007.002A: input,hidraw2: USB HID v1.00 Device [HID 05f3:0007] on usb-0000:00:14.0-4.4.2.2/input1
[20799.686543] e1000e: enp0s31f6 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

You'll notice that the dock essentially "undocks" then "redocks" then "undocks" then "redocks in a very short amount of time.

This entire time my laptop has been sitting in the dock, untouched.

Has anyone else seen this type of issue? Thanks!

drcouzelis · 2016-08-29 18:22:29

For clarification: Is the docking / undocking actually causing usability issues? Or, are you just concerned about entries appearing in the logs?

codemac · 2016-08-29 18:25:30

Yes!

Everything is plugged into the dock, (screen, keyboard, mouse, headphones) and they all cut out every time you see that in the logs. For the USB devices it's not horrible, but for the monitor it fucks up XRandR state, and I have to manually turn the monitor off and on via xrand --output DP2-1 --off to get the in-memory state of various things flushed back out.

R00KIE · 2016-08-29 20:58:37

Is this a recent problem or was it like this before? Can you correlate the problem with any update you have done recently? Have you tried with linux-lts?

codemac · 2016-08-30 17:01:32

It appears to be a recent problem, so seeing if anyone on 4.7.2 is having similar issues.

armando · 2016-09-08 04:10:40

I have a t460s and a Pro Dock, running 4.7.2 I have had no docking related issues. Possibly hardware issue?

codemac · 2016-09-08 17:47:29

[57404.626444] thinkpad_acpi: docked into hotplug port replicator
[57404.945235] Bluetooth: hci0: Waiting for firmware download to complete
[57404.945246] Bluetooth: hci0: Firmware loaded in 1539250 usecs
[57404.945397] Bluetooth: hci0: Waiting for device to boot
[57404.958160] Bluetooth: hci0: Device booted in 12508 usecs
[57404.958241] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-11-5.ddc
[57404.962218] Bluetooth: hci0: Applying Intel DDC parameters completed
[57404.963191] Bluetooth: hci0: Setting Intel event mask failed (-16)
[57405.703324] usb 2-4: new SuperSpeed USB device number 3 using xhci_hcd
[57405.721334] hub 2-4:1.0: USB hub found
[57405.721792] hub 2-4:1.0: 4 ports detected
[57405.939859] usb 1-4: new high-speed USB device number 10 using xhci_hcd
[57406.124350] hub 1-4:1.0: USB hub found
[57406.124609] hub 1-4:1.0: 4 ports detected
[57406.416565] usb 1-4.4: new high-speed USB device number 11 using xhci_hcd
[57406.454802] thinkpad_acpi: EC reports that Thermal Table has changed
[57406.510879] hub 1-4.4:1.0: USB hub found
[57406.510917] hub 1-4.4:1.0: 3 ports detected
[57406.789811] usb 1-4.4.1: new full-speed USB device number 12 using xhci_hcd
[57406.888819] hub 1-4.4.1:1.0: USB hub found
[57406.889217] hub 1-4.4.1:1.0: 4 ports detected
[57406.969851] usb 1-4.4.2: new low-speed USB device number 13 using xhci_hcd
[57407.080352] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.2/1-4.4.2:1.0/0003:046D:C05A.0004/input/input22
[57407.081079] hid-generic 0003:046D:C05A.0004: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:14.0-4.4.2/input0
[57407.120320] IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
[57407.159910] usb 1-4.4.1.2: new full-speed USB device number 14 using xhci_hcd
[57407.176422] wlp4s0: authenticate with 70:3a:0e:15:42:71
[57407.186654] wlp4s0: send auth to 70:3a:0e:15:42:71 (try 1/3)
[57407.191632] wlp4s0: authenticated
[57407.193363] wlp4s0: associate with 70:3a:0e:15:42:71 (try 1/3)
[57407.194206] wlp4s0: RX AssocResp from 70:3a:0e:15:42:71 (capab=0x11 status=0 aid=18)
[57407.196719] wlp4s0: associated
[57407.196759] IPv6: ADDRCONF(NETDEV_CHANGE): wlp4s0: link becomes ready
[57407.256099] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.0/0003:05F3:0007.0005/input/input23
[57407.292972] wlp4s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 70:3a:0e:15:42:71
[57407.310929] hid-generic 0003:05F3:0007.0005: input,hidraw1: USB HID v1.00 Keyboard [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input0
[57407.316563] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.1/0003:05F3:0007.0006/input/input24
[57407.370342] hid-generic 0003:05F3:0007.0006: input,hidraw2: USB HID v1.00 Device [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input1
[57419.866976] mei_wdt mei::05b79a6f-4628-4d7f-899d-a91514cb32ab:02: Could not register event ret=-22
[57419.867840] mei_wdt: probe of mei::05b79a6f-4628-4d7f-899d-a91514cb32ab:02 failed with error -22
[58149.844673] usb 1-4: USB disconnect, device number 10
[58149.844676] usb 1-4.4: USB disconnect, device number 11
[58149.844677] usb 1-4.4.1: USB disconnect, device number 12
[58149.844679] usb 1-4.4.1.2: USB disconnect, device number 14
[58149.993029] usb 1-4.4.2: USB disconnect, device number 13
[58150.077829] usb 2-4: USB disconnect, device number 3
[58150.961344] usb 2-4: new SuperSpeed USB device number 4 using xhci_hcd
[58150.977765] hub 2-4:1.0: USB hub found
[58150.978120] hub 2-4:1.0: 4 ports detected
[58151.134611] usb 1-4: new high-speed USB device number 15 using xhci_hcd
[58151.310588] hub 1-4:1.0: USB hub found
[58151.310901] hub 1-4:1.0: 4 ports detected
[58151.598011] usb 1-4.4: new high-speed USB device number 16 using xhci_hcd
[58151.689069] hub 1-4.4:1.0: USB hub found
[58151.689099] hub 1-4.4:1.0: 3 ports detected
[58151.968127] usb 1-4.4.1: new full-speed USB device number 17 using xhci_hcd
[58152.064783] hub 1-4.4.1:1.0: USB hub found
[58152.065141] hub 1-4.4.1:1.0: 4 ports detected
[58152.144831] usb 1-4.4.2: new low-speed USB device number 18 using xhci_hcd
[58152.244451] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.2/1-4.4.2:1.0/0003:046D:C05A.0007/input/input25
[58152.244621] hid-generic 0003:046D:C05A.0007: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:14.0-4.4.2/input0
[58152.334830] usb 1-4.4.1.2: new full-speed USB device number 19 using xhci_hcd
[58152.429500] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.0/0003:05F3:0007.0008/input/input26
[58152.481850] hid-generic 0003:05F3:0007.0008: input,hidraw1: USB HID v1.00 Keyboard [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input0
[58152.487672] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.1/0003:05F3:0007.0009/input/input27
[58152.538337] hid-generic 0003:05F3:0007.0009: input,hidraw2: USB HID v1.00 Device [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input1
[58162.066085] usb 1-4: USB disconnect, device number 15
[58162.066089] usb 1-4.4: USB disconnect, device number 16
[58162.066091] usb 1-4.4.1: USB disconnect, device number 17
[58162.066093] usb 1-4.4.1.2: USB disconnect, device number 19
[58162.206794] usb 1-4.4.2: USB disconnect, device number 18
[58162.259662] usb 2-4: USB disconnect, device number 4
[58162.439717] thinkpad_acpi: undocked from hotplug port replicator
[58162.539770] thinkpad_acpi: docked into hotplug port replicator
[58162.769969] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[58162.903662] thinkpad_acpi: EC reports that Thermal Table has changed
[58163.469879] usb 2-4: new SuperSpeed USB device number 5 using xhci_hcd
[58163.486350] hub 2-4:1.0: USB hub found
[58163.486755] hub 2-4:1.0: 4 ports detected
[58163.703157] usb 1-4: new high-speed USB device number 20 using xhci_hcd
[58163.881490] hub 1-4:1.0: USB hub found
[58163.881649] hub 1-4:1.0: 4 ports detected
[58164.163215] usb 1-4.4: new high-speed USB device number 21 using xhci_hcd
[58164.203777] thinkpad_acpi: EC reports that Thermal Table has changed
[58164.253964] hub 1-4.4:1.0: USB hub found
[58164.254055] hub 1-4.4:1.0: 3 ports detected
[58164.533268] usb 1-4.4.1: new full-speed USB device number 22 using xhci_hcd
[58164.629538] hub 1-4.4.1:1.0: USB hub found
[58164.629842] hub 1-4.4.1:1.0: 4 ports detected
[58164.709957] usb 1-4.4.2: new low-speed USB device number 23 using xhci_hcd
[58164.809549] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.2/1-4.4.2:1.0/0003:046D:C05A.000A/input/input28
[58164.809673] hid-generic 0003:046D:C05A.000A: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:14.0-4.4.2/input0
[58164.900022] usb 1-4.4.1.2: new full-speed USB device number 24 using xhci_hcd
[58164.995081] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.0/0003:05F3:0007.000B/input/input29
[58165.046978] hid-generic 0003:05F3:0007.000B: input,hidraw1: USB HID v1.00 Keyboard [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input0
[58165.052092] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.1/0003:05F3:0007.000C/input/input30
[58165.103469] hid-generic 0003:05F3:0007.000C: input,hidraw2: USB HID v1.00 Device [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input1
[58166.652541] usb 1-4: USB disconnect, device number 20
[58166.652545] usb 1-4.4: USB disconnect, device number 21
[58166.652547] usb 1-4.4.1: USB disconnect, device number 22
[58166.652549] usb 1-4.4.1.2: USB disconnect, device number 24
[58166.780764] usb 1-4.4.2: USB disconnect, device number 23
[58166.800332] thinkpad_acpi: undocked from hotplug port replicator
[58166.843754] usb 2-4: USB disconnect, device number 5
[58166.867045] thinkpad_acpi: docked into hotplug port replicator
[58167.017074] thinkpad_acpi: undocked from hotplug port replicator
[58167.264182] thinkpad_acpi: EC reports that Thermal Table has changed
[58169.187294] thinkpad_acpi: docked into hotplug port replicator
[58170.150843] usb 2-4: new SuperSpeed USB device number 6 using xhci_hcd
[58170.167154] hub 2-4:1.0: USB hub found
[58170.167555] hub 2-4:1.0: 4 ports detected
[58170.324060] usb 1-4: new high-speed USB device number 25 using xhci_hcd
[58170.499147] hub 1-4:1.0: USB hub found
[58170.499500] hub 1-4:1.0: 4 ports detected
[58170.780784] usb 1-4.4: new high-speed USB device number 26 using xhci_hcd
[58170.854755] thinkpad_acpi: EC reports that Thermal Table has changed
[58170.871608] hub 1-4.4:1.0: USB hub found
[58170.871655] hub 1-4.4:1.0: 3 ports detected
[58171.150863] usb 1-4.4.1: new full-speed USB device number 27 using xhci_hcd
[58171.237400] hub 1-4.4.1:1.0: USB hub found
[58171.237705] hub 1-4.4.1:1.0: 4 ports detected
[58171.320869] usb 1-4.4.2: new low-speed USB device number 28 using xhci_hcd
[58171.420351] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.2/1-4.4.2:1.0/0003:046D:C05A.000D/input/input31
[58171.420507] hid-generic 0003:046D:C05A.000D: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:14.0-4.4.2/input0
[58171.507574] usb 1-4.4.1.2: new full-speed USB device number 29 using xhci_hcd
[58171.602145] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.0/0003:05F3:0007.000E/input/input32
[58171.654569] hid-generic 0003:05F3:0007.000E: input,hidraw1: USB HID v1.00 Keyboard [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input0
[58171.659607] input: HID 05f3:0007 as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4.1/1-4.4.1.2/1-4.4.1.2:1.1/0003:05F3:0007.000F/input/input33
[58171.711132] hid-generic 0003:05F3:0007.000F: input,hidraw2: USB HID v1.00 Device [HID 05f3:0007] on usb-0000:00:14.0-4.4.1.2/input1
[58248.132943] ------------[ cut here ]------------
[58248.132962] WARNING: CPU: 0 PID: 749 at drivers/gpu/drm/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x177/0x180 [i915]
[58248.132964] WARN_ON(!wm_changed)
[58248.132965] Modules linked in:
[58248.132966]  hid_generic usbhid hid sha256_ssse3 sha256_generic hmac drbg ansi_cprng ctr ccm uvcvideo videobuf2_vmalloc videobuf2_memops btusb videobuf2_v4l2 btrtl videobuf2_core btbcm btintel videodev bluetooth media joydev mousedev snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc snd_hda_codec_realtek snd_soc_sst_dsp snd_hda_ext_core snd_hda_codec_generic snd_soc_sst_match snd_soc_core snd_compress snd_pcm_dmaengine ac97_bus arc4 msr iTCO_wdt mei_wdt iTCO_vendor_support iwlmvm mac80211 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul snd_hda_intel crc32c_intel e1000e snd_hda_codec ghash_clmulni_intel snd_hda_core nls_iso8859_1 aesni_intel nls_cp437 snd_hwdep iwlwifi aes_x86_64 lrw gf128mul glue_helper ablk_helper vfat
[58248.133001]  cryptd intel_cstate fat cfg80211 input_leds rtsx_pci_ms snd_pcm intel_rapl_perf psmouse ptp serio_raw snd_timer pcspkr memstick pps_core thinkpad_acpi mei_me nvram i2c_i801 snd intel_pch_thermal mei wmi soundcore shpchp led_class rfkill battery ac fjes evdev tpm_crb mac_hid thermal tpm_tis tpm sch_fq_codel vboxnetflt(O) vboxnetadp(O) pci_stub vboxpci(O) vboxdrv(O) acpi_call(O) ip_tables x_tables ext4 crc16 jbd2 mbcache sd_mod rtsx_pci_sdmmc mmc_core atkbd libps2 i915 ahci intel_gtt i2c_algo_bit libahci rtsx_pci drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops libata xhci_pci xhci_hcd scsi_mod usbcore drm usb_common i8042 serio video button
[58248.133039] CPU: 0 PID: 749 Comm: Xorg Tainted: G        W  O    4.7.2-1-ARCH #1
[58248.133040] Hardware name: LENOVO 20F9005AUS/20F9005AUS, BIOS N1CET37W (1.05 ) 01/15/2016
[58248.133042]  0000000000000286 000000007c23eee7 ffff880505f0f8f8 ffffffff812eb132
[58248.133044]  ffff880505f0f948 0000000000000000 ffff880505f0f938 ffffffff8107a3ab
[58248.133047]  00000e5b00000063 ffff880507250000 ffff880505f0f9c4 ffff88050641a2f0
[58248.133049] Call Trace:
[58248.133053]  [<ffffffff812eb132>] dump_stack+0x63/0x81
[58248.133055]  [<ffffffff8107a3ab>] __warn+0xcb/0xf0
[58248.133057]  [<ffffffff8107a42f>] warn_slowpath_fmt+0x5f/0x80
[58248.133069]  [<ffffffffa0238037>] skl_update_other_pipe_wm+0x177/0x180 [i915]
[58248.133079]  [<ffffffffa02381c4>] skl_update_wm+0x184/0x650 [i915]
[58248.133090]  [<ffffffffa02ca6bf>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915]
[58248.133099]  [<ffffffffa023bd7e>] intel_update_watermarks+0x1e/0x30 [i915]
[58248.133111]  [<ffffffffa02ac0c0>] haswell_crtc_enable+0x750/0x8c0 [i915]
[58248.133123]  [<ffffffffa02a7950>] intel_atomic_commit+0x510/0x1460 [i915]
[58248.133129]  [<ffffffffa0061aad>] ? drm_atomic_check_only+0x18d/0x610 [drm]
[58248.133133]  [<ffffffffa0061466>] ? drm_atomic_set_crtc_for_connector+0x96/0x100 [drm]
[58248.133138]  [<ffffffffa0061f67>] drm_atomic_commit+0x37/0x60 [drm]
[58248.133142]  [<ffffffffa01d1eed>] drm_atomic_helper_set_config+0x7d/0xb0 [drm_kms_helper]
[58248.133149]  [<ffffffffa004fe85>] drm_mode_set_config_internal+0x65/0x110 [drm]
[58248.133154]  [<ffffffffa00550bb>] drm_mode_setcrtc+0x47b/0x580 [drm]
[58248.133159]  [<ffffffffa00469a2>] drm_ioctl+0x152/0x540 [drm]
[58248.133165]  [<ffffffffa0054c40>] ? drm_mode_setplane+0x1d0/0x1d0 [drm]
[58248.133167]  [<ffffffff811f9744>] ? __vfs_write+0xe4/0x140
[58248.133170]  [<ffffffff8120cd72>] do_vfs_ioctl+0xa2/0x5d0
[58248.133172]  [<ffffffff810868bb>] ? recalc_sigpending+0x1b/0x50
[58248.133174]  [<ffffffff81087411>] ? __set_task_blocked+0x41/0xa0
[58248.133176]  [<ffffffff81217e07>] ? __fget+0x77/0xb0
[58248.133179]  [<ffffffff8120d319>] SyS_ioctl+0x79/0x90
[58248.133181]  [<ffffffff81089f8e>] ? SyS_rt_sigprocmask+0x8e/0xc0
[58248.133183]  [<ffffffff815de7b2>] entry_SYSCALL_64_fastpath+0x1a/0xa4
[58248.133185] ---[ end trace 2086919321ebaf9b ]---

I can't narrow down to whether or not this is hardware, but the kernel obviously struggles with the drm subsystem, which is usually true for new intel platforms (skylake). What CPU do you have?

codemac · 2016-10-17 22:54:02

This disappeared by upgrading to 4.8.1.

Arch Linux

#1 2016-08-29 18:11:05

Lenovo t460s dock undocks / redocks repeatedly

#2 2016-08-29 18:22:29

Re: Lenovo t460s dock undocks / redocks repeatedly

#3 2016-08-29 18:25:30

Re: Lenovo t460s dock undocks / redocks repeatedly

#4 2016-08-29 20:58:37

Re: Lenovo t460s dock undocks / redocks repeatedly

#5 2016-08-30 17:01:32

Re: Lenovo t460s dock undocks / redocks repeatedly

#6 2016-09-08 04:10:40

Re: Lenovo t460s dock undocks / redocks repeatedly

#7 2016-09-08 17:47:29

Re: Lenovo t460s dock undocks / redocks repeatedly

#8 2016-10-17 22:54:02

Re: Lenovo t460s dock undocks / redocks repeatedly

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