Just testing this again. I noticed that when using an external monitor and disabling the one on my laptop, the flickering only occurs very rarely. Also , when enabling both screens, the flickering is much more severe.
So for me this seems like the radeon driver doesn't detect the refresh rate correctly or xmir doesn't set the refresh rate correctly. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1233545 Title: XMir screen corruption on radeon GPU Status in Unity System Compositor: Invalid Status in XMir: Confirmed Status in “xserver-xorg-video-ati” package in Ubuntu: Confirmed Bug description: See the attached video. Happens on my Thinkpad Edge with radeon graphics card. --- ApportVersion: 2.12.5-0ubuntu1 Architecture: amd64 DistroRelease: Ubuntu 13.10 EcryptfsInUse: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] RS880M [Mobility Radeon HD 4225/4250] [1002:9712] (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21c6] InstallationDate: Installed on 2011-05-12 (872 days ago) InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MarkForUpload: True Package: unity-system-compositor 0.0.1+13.10.20130926.1-0ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2 Tags: saucy Uname: Linux 3.11.0-9-generic x86_64 UnitySystemCompositorLog: ** (lightdm:1376): WARNING **: Error executing child process unity-system-compositor.sleep: No such file or directory UnitySystemCompositorLogOld: ** (lightdm:1377): WARNING **: Error executing child process unity-system-compositor.sleep: No such file or directory UpgradeStatus: Upgraded to saucy on 2013-06-05 (117 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare version.libdrm: libdrm2 2.4.46-1 version.lightdm: lightdm 1.7.17-0ubuntu1 version.mesa: libegl1-mesa-dev N/A To manage notifications about this bug go to: https://bugs.launchpad.net/unity-system-compositor/+bug/1233545/+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
