https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #232 from lockheed qwrules@gmail.com --- @Francisco, Thanks for the clarification. This “frosting” screne problem – does it freeze the screen apart from scrambling, and forces you to reboot?
I found that on 3.13 I was able to use my laptop sometimes for hours, or even a day, without this happening. But it eventually always happened. I am on a Thinkpad W500 now with two GPUs. I switched to Intel for the moment and everything is fine. I will try again switching back to rv635 to try open drivers. Maybe soon, as you report no problems.
However, I came to appreciate the temperature drop, battery life increase, and better Flash performance on the Intel 4500 chip.
And I am on arch, too. Which Mesa version are you using? Have you tried this? https://aur.archlinux.org/packages/mesa-r300-r600-radeonsi-git/