Comment # 5 on bug 67800 from Kertesz Laszlo

(In reply to comment #4)
> This may be a duplicate of bug 65958.  Does setting the env var RADEON_VA=0
> in your /etc/environment fix the issue?

(In reply to comment #4)
> This may be a duplicate of bug 65958.  Does setting the env var RADEON_VA=0
> in your /etc/environment fix the issue?

Unfortunately it doesnt solve it. I still get freezes after a few hours of
idle.