[Bug 34772] [radeon] [R300] GPU lockups with when KMS is enabled

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=34772





--- Comment #1 from Rogério Brito <rbrito at ime.usp.br>  2011-05-19 20:34:40 ---
Just for the record, I can provide further messages of these: this is as
reproducible as I like.

In fact, I am now able to reproduce it with kernel 2.6.38 if I boot the iBook
G4 with the options:

"video=radeonfb:off radeon.agpmode=-1 radeon.modeset=1"

and play a video with mplayer.

If, OTOH, I leave off the KMS, then I don't get the GPU lockups that I
reported.

Anyway, things are *way* better with 2.6.38 than with 2.6.39, as with 2.6.39
the kernel doesn't even get the colors correctly---everything that should be
red becomes blue and so forth (any kind of endianness problem?).

I am attaching here another stacktrace, in case it helps.


Regards,

Rogério Brito.

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