Public bug reported: My desktop system is a Skylake i5-6600 with Asus Z170 mainboard and Intel onboard graphics, connected to a 4K monitor via DP 1.2.
I've selected "Desktop Cube Animation" as Virtual Desktop Switching Animation. After upgrade to Yakkety, this desktop animation shows a large dark area in the top right corner, while the animation is in progress. The size is exactly (?) 1/4 of the screen, and the color of the area changes during animation. When the animation completes, everything is back to normal. I cannot tell if this issue is related to Kwin, or the Intel graphics driver or some such thing. On Xenial, this particular bug was not present, although I did have some glitches in Cover Switch (bottom of Windows showing at the top). ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: kwin 4:5.7.5-0ubuntu2 ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0 Uname: Linux 4.8.0-26-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 CurrentDesktop: KDE Date: Sun Oct 30 17:22:00 2016 InstallationDate: Installed on 2016-08-24 (66 days ago) InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) PackageArchitecture: all SourcePackage: kwin UpgradeStatus: Upgraded to yakkety on 2016-10-26 (3 days ago) ** Affects: kwin (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug graphics intel skylake yakkety ** Attachment added: "Screen with glitch" https://bugs.launchpad.net/bugs/1637852/+attachment/4769840/+files/Screenshot_20161030_173319.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1637852 Title: kwin effect greys quarter of screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kwin/+bug/1637852/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs