*** This bug is a duplicate of bug 1742602 *** https://bugs.launchpad.net/bugs/1742602
** This bug has been marked a duplicate of bug 1742602 Blank screen when starting X after upgrading from 4.10 to 4.13.0-26 -- 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/1637329 Title: Secondary monitor blanks out randomly Status in linux package in Ubuntu: Confirmed Bug description: When hooked up to a second monitor it will blank out occastionally. Same issue on two external monitors. Both hooked up via MiniDisplay port. Every time it happens i have a the following log in my dmesg: [47192.964713] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-generic 4.8.0.26.35 ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0 Uname: Linux 4.8.0-26-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: bbennett 2693 F.... pulseaudio /dev/snd/controlC1: bbennett 2693 F.... pulseaudio /dev/snd/controlC0: bbennett 2693 F.... pulseaudio CurrentDesktop: Unity Date: Thu Oct 27 16:03:21 2016 HibernationDevice: RESUME=UUID=872ed834-8bdc-4c58-a9ab-6c0ad9ec3ca8 InstallationDate: Installed on 2016-10-17 (10 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) MachineType: LENOVO 20FRS0XT00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-26-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.8.0-26-generic N/A linux-backports-modules-4.8.0-26-generic N/A linux-firmware 1.161 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/30/2016 dmi.bios.vendor: LENOVO dmi.bios.version: N1FET38W (1.12 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FRS0XT00 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1FET38W(1.12):bd03/30/2016:svnLENOVO:pn20FRS0XT00:pvrThinkPadX1Carbon4th:rvnLENOVO:rn20FRS0XT00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20FRS0XT00 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/1637329/+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