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[Bug 840140]

 

Hi,

after some days of using the value 0x55555555, I can tell you that I did
not see any GPU lockups anymore. Unfortunately, the remaining glitches
and artifacts make the system unusable for a productive environment.

* If you "use" the system, after some minutes more and more glitches
appear. For example, the taskbar converts to "noise-only". Then, more
and more widgets start to contain noise, and you'll have to shutdown X
and restart it.

* Screenshots do not work. The created PNG is just black.

* The "RMB-context menu" shows only text and icons, but no surrounding
window.

* You see some icons in the taskbar, but not all.

* If you place your mouse cursor over an icon in the taskbar, the icon
disappears.

* Shutting down KDE crashes "kwin"... might be a different issue.

The goodies:
* KDE works
* Transparency and the desktop effects are working :-)
* I know that my graphics adapter is not defect :-D

Regards,
Florian

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https://bugs.launchpad.net/bugs/840140

Title:
  Graphical corruption then black screen using an ATI Radeon 6790 card
  on boot

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