I am now no longer seeing the flicker and resolution issues much (and poking the hardware, e.g. by opening the Display control panel usually gets rid of it). I have a suspicion there might be hardware issues too. The mouse cursor issue is still present with kernel 4.2.0-7-generic, and still not present with the mainline kernel, tested with 4.2.0-040200-generic. However it is very hard to get a graphical log-in with either of the 4.2 kernels at all - it is shown briefly, then I have a black screen and can get a VT but usually not an X console. I am currently using 4.1.6-040106-generic again, which just now is working as well as Ubuntu 15.04 did.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1492170 Title: Screen flicker and resolution problems after hot-plug Status in xserver-xorg-video-intel package in Ubuntu: New Bug description: After upgrading to Wily, when I change the configuration of screens attached (specifically: dock the laptop to a docking station with a vertically larger external screen or open the laptop to activate the internal screen while correctly running with said external screen) this causes various display issues, including flickering while the mouse cursor is moved and or one screen flickering the contents of the other; incorrect resolution; incorrect offset of displayed screen contents on screen. I saw similar (can't say whether or not identical) effects using the stock 4.1.0-3.3 generic kernel, and mainline generic kernels 4.0.0-040000rc2.201503031836 (working before the first reboot after upgrading to Wily), 4.1.3-040103.201507220129 and 4.1.6-040106.201508170230. In addition (probably a separate issue), when booting 4.1.0-3.3 to external monitor only, the mouse cursor was not shown. After my last test I was able to bring things back to "normal" by killing the X server and logging in again. $ lsb_release -rd Description: Ubuntu Wily Werewolf (development branch) Release: 15.10 $ apt-cache policy xserver-xorg-video-intel xserver-xorg-video-intel: Installed: 2:2.99.917+git20150808-0ubuntu2 Candidate: 2:2.99.917+git20150808-0ubuntu2 Version table: *** 2:2.99.917+git20150808-0ubuntu2 0 500 http://de.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu2 Uname: Linux 4.1.6-040106-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.18-0ubuntu9 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 4 11:11:59 2015 DistUpgraded: 2015-09-03 15:02:03,761 DEBUG enabling apt cron job DistroCodename: wily DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:05cb] InstallationDate: Installed on 2014-08-01 (399 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Dell Inc. Latitude E7440 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.1.6-040106-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-intel UpgradeStatus: Upgraded to wily on 2015-09-03 (0 days ago) dmi.bios.date: 06/26/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 0RYCC9 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd06/26/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn0RYCC9:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.1+15.10.20150805-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.6.3-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.6.3-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu5 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Fri Sep 4 11:10:45 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 4413 vendor AUO xserver.version: 2:1.17.2-1ubuntu5 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1492170/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
