The commit 1021799b6ca6b195ad2d5f002e45668f69c44651 in DRM, http://gitweb.freedesktop.org/?p=mesa/drm.git;a=commit;h=1021799b6ca6b195ad2d5f002e45668f69c44651 "nouveau: do not set on-board timer's numerator/denominator to bad values" breaks my nv20 (gf3) card. When starting X, mode is set, I get a screen with colorful garbage on top, black&white noise on the bottom, and black in the middle for couple of seconds during which mouse cursor moves fine. Then I'm back in text console with a kernel gone out to lunch. There are two problems: 1. the mentioned commit apparently also breaks PTIMER, and 2. nouveau_fifo_free() uses PTIMER for a timeout, which will never happen, hence the kernel becomes a zombie. While the kernel is a zombie, I can SysRq tErminate, after which I can SysRq show Program counter, which says it is in nouveau_fifo_free. All I can do is SysRq reBoot. Reverting the mentioned commit fixes the problem 1, and consequently the problem 2. does not trigger.
Reproduced, and hopefully fixed, thanks :)
Yes, this fixed the issue.
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