You have been subscribed to a public bug: Not sure what to hang this on. I have a Lenovo T550 with an Intel HD5500.
It barely worked in Ubuntu 14.04 so here we are on 15.04 beta. light-locker seems to change video mode, so logging out and logging in again breaks the desktop. xscreensaver does not suffer from this problem. Sometimes I get weird sideways-scrolling of the entire display (analogue tv anyone?) ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1 ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1 Uname: Linux 3.19.0-9-generic x86_64 ApportVersion: 2.16.2-0ubuntu3 Architecture: amd64 CurrentDesktop: XFCE Date: Thu Mar 19 11:05:36 2015 InstallationDate: Installed on 2015-03-05 (14 days ago) InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: xserver-xorg-video-intel UpgradeStatus: Upgraded to vivid on 2015-03-19 (0 days ago) ** Affects: xserver-xorg-video-intel (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: amd64 apport-bug asked-to-upstream vivid -- video mode switches make graphical processes unstable? https://bugs.launchpad.net/bugs/1434219 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs