[Nouveau] [Bug 29583] nouveau freeze Xorg on NV34

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29583

--- Comment #14 from Francisco Jerez <currojerez at riseup.net> 2010-08-27 06:15:21 PDT ---
(In reply to comment #13)
> (In reply to comment #12)
> > The all-is-frozen situation described in the comment only appeared once.
> > During my bisecting,while Xorg is frozen,I'm still able to move mouse and
> > network is still working.
Actually if it were some kind of kernel deadlock you wouldn't be able to move
the mouse at all. Most likely the card has locked up for some reason, can you
reboot with "drm.debug=3 log_buf_len=256k" in the kernel command line and
attach new kernel logs after the hang?

> > So according to the definition of 'Hardlockups':
> >   Hardlockups are bugs that cause the CPU to loop in kernel mode
> >   for more than 60 seconds, without letting other interrupts have a
> >   chance to run.
> > I don't think this is a hardlockup.
> 
> Ah! Then CONFIG_DETECT_HUNG_TASK would be more appropriate.

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