[Lenovo ThinkPad X1 Carbon] Windows are moved unlocking screen

[Rob Moore]

I have an external monitor attached to my laptop and am using a ThinkPad OneLink+ docking station.

I repeatedly have issues where if I lock the screen and unlock it, windows return to the incorrect window (my laptop window). I also have crossed out icons (red circle with a line through it) for several of my icons in the upper left corner of the screen in the toolbar).

I see the following in the kern.log:

Nov 29 15:00:11 rob-ThinkPad-X1-Carbon-4th kernel: [20756.881080] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
Nov 29 15:18:28 rob-ThinkPad-X1-Carbon-4th kernel: [21853.908360] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-27-generic 4.8.0-27.29
ProcVersionSignature: Ubuntu 4.8.0-27.29-generic 4.8.1
Uname: Linux 4.8.0-27-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: rob 2261 F.... pulseaudio
 /dev/snd/controlC1: rob 2261 F.... pulseaudio
 /dev/snd/controlC0: rob 2261 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Nov 29 13:16:03 2016
HibernationDevice: RESUME=UUID=184fad00-25d9-4ee8-aa65-c19dc4270e0b
InstallationDate: Installed on 2016-11-11 (18 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
MachineType: LENOVO 20FB002LUS
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-27-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-27-generic N/A
 linux-backports-modules-4.8.0-27-generic N/A
 linux-firmware 1.161
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/01/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: N1FET44W (1.18 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20FB002LUS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40705 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1FET44W(1.18):bd09/01/2016:svnLENOVO:pn20FB002LUS:pvrThinkPadX1Carbon4th:rvnLENOVO:rn20FB002LUS:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20FB002LUS
dmi.product.version: ThinkPad X1 Carbon 4th
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.9 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.9-rc7

[Rob Moore (roborative)]

I've seen this same issue on another laptop (Dell m3800) and was hoping it was hardware related but it's not apparently. I believe it's related to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779.

I will attempt to test the upstream kernel but before I do are there any instructions for reverting back once the test is complete?

[Kevin (kevinhaefeli)]

same here with MacBookPro12,1 and kernel 4.8.14-040814-generic

[penalvch (penalvch)]

Kevin (kevinhaefeli), it will help immensely if you filed a new report with the Ubuntu repository kernel (not mainline/upstream) via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]