[Nouveau] [Bug 28095] X crash with PFIFO_CACHE_ERROR. (Nouveau on Riva TNT).

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28095

--- Comment #20 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Brent from comment #19)
> Been trying to track down the oldest kernel that shows the corrupted
> display, but have run into further problems.  It seems nouveau with the
> early 3.x kernels does not work at all on this NV04 video card.  I think 3.4
> is the first version with nouveau included in the kernel?  Have tried 3.1
> (Slacko Puppy 5.3.3), a 3.4.106 kernel I built on the Arch Linux system with
> the 2.6.35 kernel that does work, and 3.5 (AntiX Linux 12).  Puppy and AntiX
> fall back to the VESA driver, and Arch with the custom 3.4.106 kernel and X
> 1.8.1.902 just drops to a text screen.  All try to use nouveau, and all give
> the same "(EE) [drm] failed to open device" message in Xorg.0.log.

nouveau was first merged in 2.6.33 as a staging driver. It moved out of staging
in kernel 3.4. It's possible that your userspace expects a newer abi than the
old nouveau provided.

This feels like some sort of tiling fail. Do things work better if you boot
with

nouveau.noaccel=1 nouveau.nofbaccel=1

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