same here with MacBookPro12,1 and kernel 4.8.14-040814-generic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1645876
Title: *ERROR* CPU pipe A and B FIFO underrun Status in linux package in Ubuntu: Incomplete Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1645876/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
