The previous link is broken. It'been removed. But here they're talk about the same problem. http://askubuntu.com/questions/691938/skype-window-problem-in-ubuntu-14-04/693803#693803
I didn't tested the solution however -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1512402 Title: Corrupted display of Qt4 Applications Status in xorg package in Ubuntu: New Bug description: When I run Qt4 based Applications either from konsole or from Creator the windows' content will look very disturbed, rendering the program absolutely useless. This happens only if Android Studio is running at the same time (Version 1.4, JDK 1.7.0_79). If I close Ansroid Studio (almost) everything is fine again. (Well almost, as there's also a problem with Qt4 command link buttons and HiDPI displays, but that's another story.) The applies for file dialogs in chromium (it uses kde4 libs, I suppose?). When AS is running, the file dialogs will be unusable, if I close it all is good. I haven't tested it with other Java based applications yet, so it might just be the JDK. (It's the Oracle one, I think, or whatever Google makes you download.) ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.19.1-0ubuntu4 Architecture: amd64 CurrentDesktop: KDE Date: Mon Nov 2 17:05:36 2015 InstallationDate: Installed on 2015-06-01 (154 days ago) InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcEnviron: LANGUAGE= PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to wily on 2015-10-26 (6 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1512402/+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