After further investigation, this is an effect of the following bug: https://code.google.com/p/chromium/issues/detail?id=339493 .
** Bug watch added: code.google.com/p/chromium/issues #339493 http://code.google.com/p/chromium/issues/detail?id=339493 ** Package changed: xserver-xorg-video-intel (Ubuntu) => chromium- browser (Ubuntu) ** Changed in: chromium-browser (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1314028 Title: Graphical glitches with SNA enabled on Intel graphics Status in “chromium-browser” package in Ubuntu: New Bug description: Operating System: Xubuntu 14.04 (Update from 13.10) CPU: Intel Celeron 847 1,1GHz RAM: 4GB Graphics: Intel HD Graphics 2000 Steps to reproduce the issue: - Open multiple windows on seperate workspaces. - Switch between windows via Alt+Tab. Expected Result: Application windows are rendered correctly, there are no visible graphical glitches. Actual Result: There are graphical glithes where the active window is only rendered partially, e.g. switching from Thunderbird to Chromium leads to a mixture of both applications. When hovering the mouse pointer over elements, those are updated and rendered correctly. The same effect may happen when minimizing / maximizing windows. Workaraound: Instead of using SNA, fall back to UXA rendering mode. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1314028/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
