Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug yakkety
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/bugs/1645876/+attachment/4784850/+files/lspci-vnvn.log
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https://bugs.launchpad.net/bugs/1645876
Title:
*ERROR* CPU pipe A and B FIFO underrun
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