[Nouveau] [Bug 86641] [NVAC] nouveau crashes kernel with nvidia 9400 igp

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86641

--- Comment #4 from Pierre Moreau <pierre.morrow at free.fr> ---
(In reply to Ilia Mirkin from comment #1)
> From IRC:
> 
> <mirak> ./nvapeek 0x100c14
> <mirak> 00100c14: 00010003
> 
> So it's a very different issue than the sort of thing that the macbooks were
> experiencing.

It seems so. Init'ing the NVAC on the MBPs failed with interrupt 0x00400000
iirc, whereas this one passes the initialisation without troubles, but fails
when loading X.

@mirak
I would be interested by a mmio trace from the Nvidia driver (see
https://wiki.ubuntu.com/X/MMIOTracing), to compare it with mine and see what's
going differently.
You mentioned issues with the Nvidia driver, what kind of issues are you
experiencing? (If it fails the same way, there won't be much we can do...
Probably just poking the Nvidia guys about it.)

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