I have an ATI Radeon HD 3450 card and most times when I move windows the contents are corrupted and artifacts show all over them. Horizontal scrolling of windows makes this happen also. Probably because the window is moved instead of the contents being "scrolled". Vertical scrolling works fine.
Artifacts when moving windows seems to happen worse with OpenBox/lxde and IceWM. KDE seems to handle moving windows differently and does not corrupt when moving but horizontal scrolling does produce artifacts.
All I need to do to produce this is open a spreadsheet in LibreOffice that has data in more columns than can be displayed, scroll over 2 columns to the right then hit the page section of the scroll bar to bring column A back in view and the contents are destroyed.
I tested this on another computer with the same PCLinuxOS 2011.6 software with the exception of a nVidia card and it does not corrupt the display at all. I used to have the 3d effects installed (including wobbly windows) on the ati computer but removed them and went so far as modifying the xorg.conf file:
Added in xorg.conf:
Option "Composite" "Disable"
Option "AIGLX" "off"
Tried Option "NoAccel" in Section "Device" but caused X not to start.
I was hoping someone else ran into this before and knows of some magical option to put in the xorg.conf file to fix this.
Thanks in advance,