OS: Ubuntu 12.04 LTS
DE: latest cinnamon release
Graphics card: AMD Radeon HD 6520G
Basically, each time a notification or icon is added automatically to the taskbar, the screen flickers/glitches/tears. For example, each time I receive a message in Pidgin, the screen flickers when the little icon in the lower right appears (http://i.imgur.com/o3lub.png
not visible, dunno why), and when I click on the icon to take me to the message, it flickers when the icon goes away. This also happens with the autohide taskbar feature.
In fact, this topic right here exactly describes what's happening to me: viewtopic.php?f=208&t=107476
After googling around, I read some posts on the Ubuntu forums about turning on "Tear Free" in the Catalyst Control Center, but that does nothing.
Any help is appreciated.