https://bugs.freedesktop.org/show_bug.cgi?id=28402

--- Comment #43 from Lukas Schneiderbauer lukas.schneiderbauer@gmail.com 2010-09-06 02:03:38 PDT --- Since I don't know, what's important when calling radeontool, I'll better tell you what I did: I booted the new kernel, started X (via kdm), switched to a vt and used radeontools.

(In reply to comment #40)

if you boot with a bad kernel and run radeontool regset 0x130 0x70000000 does it stabilise any?

No. I booted a 2.6.35-r3 kernel with gentoo-patches, which is known for me to possess a high freeze-frequency and did as you said:

$ radeontool regset 0x130 0x70000000 OLD: 0x130 (0130) 0x40800000 (1082130432) NEW: 0x130 (0130) 0x70000000 (1879048192)

After a few minutes, the freeze appeared again.