I have a radeon card here. Just tried it. The X server starts up OK but as
soon as I run tuxracer, some ioctl down in the radeon driver keeps on timing
out waiting for the FIFO, spins for ten milliseconds in-kernel and the X
server immediately calls the ioctl again. The whole thing is bust. I went
all the way back to 2.5.39, where it is still bust. 2.4.21-pre5 is OK
So it looks like my breakage is different from yours.
Could you please try just 2.5.64 plus
That will tell us if it is a -mm bug or a -linus bug.
It it is the latter, and if you're feeling really keen then could you search through the patches at
and work out exactly which one introduced the problem?
Each of those patches is against 2.5.64. The chronological order is:
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