Confirming this, using a Dell Latitude E5510 with Intel HD Graphics (on- chip), together with a docking station PR02X and a two-monitor-setup (2x BenQ GW2460, 1920x1080, DVI).
The problem occurs most of the time when scrolling in a full screen application on the left screen using the scroll bar (click the bar and move the mouse) while the mouse coursor leaves the screen during the scroll. This gives me a flackering or one of the screen goes black with a little random noise on the leftest ~50 pixels of the screen. This issue is new to me after upgrading from 14.04 with latest kernel 4.2 patches to 16.04 with kernel 4.4.0-28-generic. This issue is a regression as I'm still using exactly the same hardware. -- 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/1553503 Title: multi monitors - black flashes or black screen when the mouse cursor leaves a monitor Status in linux package in Ubuntu: Triaged Bug description: When the mouse cursor leaves one of the screens, there is either : - no problem - the screen becomes black just below the position of the cursor and instantly comes back to normal. - the screen becomes entirely black with some random colored pixels flickering on the far left of the screen. I have to move the cursor to the black screen, otherwise it stays black. It happens on Ubuntu Gnome 16.04 Beta and Ubuntu Mate 16.04 Beta. I have tested with other distributions (Debian Jessie and Fedora) and everything is fine. Hardware : Intel Ironlake (Thinkpad X201) with an external monitor plugged in. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-7.22-generic 4.4.2 Uname: Linux 4.4.0-7-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 CasperVersion: 1.367 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: GNOME Date: Sat Mar 5 13:17:15 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Lenovo Core Processor Integrated Graphics Controller [17aa:215a] LiveMediaBuild: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160225.1) MachineType: LENOVO 3680KD3 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/11/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 6QET70WW (1.40 ) dmi.board.name: 3680KD3 dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6QET70WW(1.40):bd10/11/2012:svnLENOVO:pn3680KD3:pvrThinkPadX201:rvnLENOVO:rn3680KD3:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 3680KD3 dmi.product.version: ThinkPad X201 dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.1.2-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.1.2-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.17.3-2ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.6.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160218-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1 xserver.bootTime: Sat Mar 5 13:03:55 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 2202 vendor BOE xserver.version: 2:1.17.3-2ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503/+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
