Me and a colleague also experience this exact behavior. It happens a lot more then 10 times a day here. There is a pattern with mouse movement (leaving screen) but it is not clearly reproducible. It seems like the display port signal is completely lost rather than the image itself turning black, as the monitor is also closing the OSD if it is opened.
Our Setup here is: Lenovo x230 with two external Screens connected via Display Port under Kubuntu 16.04. I don't know how to extract the list of software information like the reporter did... -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1587749 Title: random 1-2s black screen Status in xorg package in Ubuntu: Confirmed Bug description: I have a Lenovo T450s with docking station and 2 display port monitors on it. I experience black screens for about a second. Usually one of the external monitors only. One external display turns black and comes back after 1 or 2 seconds. This happens >10 times a day and is really annoying. My colleague experiencing the same issue, also using Ubuntu 16.04. Same hardware. At home I have a similar issue, also with Intel motherboard graphics. Different hardware. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Wed Jun 1 09:14:00 2016 DistUpgraded: 2016-04-25 11:02:09,877 DEBUG icon theme changed, re-reading DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: virtualbox, 5.0.18, 4.4.0-22-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Broadwell-U Integrated Graphics [17aa:5036] InstallationDate: Installed on 2015-11-06 (207 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: LENOVO 20BWS2YL00 ProcEnviron: LANGUAGE=de_DE TERM=xterm PATH=(custom, no user) LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to xenial on 2016-04-25 (36 days ago) dmi.bios.date: 07/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET51WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BWS2YL00 dmi.board.vendor: LENOVO dmi.board.version: SDK0E50510 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20BWS2YL00 dmi.product.version: ThinkPad T450s dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Wed Jun 1 07:58:12 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 4925 vendor AUO xserver.version: 2:1.18.3-1ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1587749/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
