[Nouveau] [Bug 53101] Fedora 17 "PFIFO - playlist update failed" on boot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=53101

--- Comment #11 from Kelly Doran <kel.p.doran at gmail.com> 2012-08-24 02:34:33 UTC ---
I have been playing around with this a bit and made some progress.  It seems to
affect any nvc0 card (I have a GTX 580).  I went through the commits between
3.4.0 and 3.5.0-rc1 and determined that the cause of the error is
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=1a46098e910b96337f0fe3838223db43b923bad4

The cards work fine with the latest nouveau git tree if you comment out:
        { "COPY1", 5, 0x90b8, nvc0_bo_move_copy, nvc0_bo_move_init },
        { "COPY0", 4, 0x90b5, nvc0_bo_move_copy, nvc0_bo_move_init },

which seems to imply that the nvc0_bo_move_copy function is not working
correctly.  I don't know nearly enough about nouveau to try to fix this
function or know what consequence commenting out these lines has, but hopefully
this helps.

On a possibly related note, running glxinfo seems to crash xorg and produce
some more PFIFO errors in dmesg, I have no idea if this is related to those
lines being commented out or not (this is the first time I have ever gotten
nouveau working on this computer).  Everything else seems stable... so far...

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