tap, could you please run the following command from a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1497621 Please ensure you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information. ** Package changed: xorg-server (Ubuntu) => xorg (Ubuntu) ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1497621 Title: Unity display corrupted on login or switch user Status in xorg package in Ubuntu: Incomplete Bug description: I have a new install of 15.04. I am using lightdm with a unity desktop (default). I have two users on my system. Often when I log in or switch user unity or lightdm (I don't know enough to understand which one) will freeze on a corrupted display. The launcher icons and the launcher will be overwritten with some pseudo-random pattern. the bar across the top of the display will also be corrupted. Sometimes the display has both my desktop and the unity-login greeter mixed. I usually can't type or do alt-f2 for several seconds. At some point (usually several seconds later) the display will appear to "reset," sometimes once, sometimes several times and eventually will settle on an uncorrupted, usable screen. If I switch user 10 times this will happen on 8 of them. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: lightdm 1.14.2-0ubuntu1 ProcVersionSignature: Ubuntu 3.19.0-28.30-generic 3.19.8-ckt5 Uname: Linux 3.19.0-28-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.17.2-0ubuntu1.3 Architecture: amd64 CurrentDesktop: Unity Date: Sat Sep 19 13:32:18 2015 InstallationDate: Installed on 2015-09-07 (11 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) LightdmConfig: [SeatDefaults] user-session=ubuntu greater-session=unity-greeter allow-guest=false SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1497621/+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