Is this a modesetting driver issue? I believe I've seen this happen when hotplugging an external monitor. It only happens for me with the modeset driver, though, not the intel driver. The modesetting driver is excellent for some things (eg it doesn't tear on the external monitor like the intel driver does), but it does struggle a bit when changing resolutions and screen layouts (eg every time I log in, it completely unnecessarily changes my laptop screen resolution from 1920x1080 to 640x480 and then back again to 1920x1080).
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1626935 Title: [yakkety] desktop is black and/or flickering after plugging in a second monitor Status in compiz package in Ubuntu: Invalid Status in mesa package in Ubuntu: Invalid Status in nautilus package in Ubuntu: Confirmed Bug description: Using 16.04 daily image: 20160919(downloading date) With testing package for 4.8 kernel: ppa:canonical-kernel-team/unstable Graphic chips: 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530 [8086:191b] (rev 06) 01:00.0 3D controller [0302]: NVIDIA Corporation GM107M [GeForce GTX 960M] [10de:139b] (rev ff) Desktop wallpaper on extended display shows black background only, and the hdmi detection is very unstable. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.8.0-14.15-generic 4.8.0-rc7 Uname: Linux 4.8.0-14-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.3-0ubuntu7 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 CurrentDesktop: Unity Date: Fri Sep 23 05:30:30 2016 DistUpgraded: Fresh install DistroCodename: yakkety DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation HD Graphics 530 [8086:191b] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Dell HD Graphics 530 [1028:06e4] InstallationDate: Installed on 2016-09-20 (3 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160919) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f3:21d5 Elan Microelectronics Corp. Bus 001 Device 002: ID 0a5c:6410 Broadcom Corp. Bus 001 Device 004: ID 0c45:6713 Microdia Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 15 9550 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-14-generic.efi.signed root=UUID=d16ac6eb-1b3e-4aa5-813b-57b5c7ef165a ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/07/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 01.02.00 dmi.board.name: 0N7TVV dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr01.02.00:bd04/07/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 15 9550 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.13.0+16.10.20160818.2-0ubuntu2 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.70-1 version.libgl1-mesa-dri: libgl1-mesa-dri 12.0.3-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 12.0.3-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-1ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160706-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1626935/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
