I confirm this behaviour for a Radeon 9800 Pro (R350) that runs on the radeon driver and marking the source package xserver-xorg-video-ati as a candidate to this bug. Feel free to mark the package xserver-xorg-video-radeonhd too if you encounter same kind of problem for that driver.
This bug seems to have been narrowed down to the AMD/ATI graphic drivers.
Packages concerned thus are: xorg-video- ati xorg-video- radeonhd
xserver-
xserver-
I confirm this behaviour for a Radeon 9800 Pro (R350) that runs on the radeon driver and marking the source package xserver- xorg-video- ati as a candidate to this bug. Feel free to mark the package xserver- xorg-video- radeonhd too if you encounter same kind of problem for that driver.