hoary xorg ati driver locks system when under heavy dri load

[Gavin Robertson]

Will lock up hard if playing a game like enemy territory. no specific time frame
for lock up seems very dependent on load, if it's a busy server i.e. lots to
render will lock pretty much straight away but i can spend hours on an empty server.

Can be reproduced by running multiple instances of glxgears, about 5 or 6 usally
does it. Will also happen if if there is some other heavy screen drawing
happening eg running strace glxgears.

Running up to date hoary, 2.6.10-5-686-smp, had no problems in warty.

Dual PIII 1.0B GHz Coppermine, Epox DV3A motherboard, ATI Radeon 9000 rv250.

This is driving me nuts so anything i can do to help i'm here, but i don't
really know where to start.

end of strace on glxgears as follows

gettimeofday({1113343586, 654705}, NULL) = 0
sched_yield() = 0
gettimeofday({1113343586, 657502}, {4294967236, 0}) = 0
ioctl(3, FIONREAD, [0]) = 0
ioctl(4, 0x4008642a, 0xbffff500) = 0
ioctl(4, 0x40106450, 0xbfffd450) = 0
ioctl(4, 0x40106450, 0xbffff4e0) = 0
ioctl(4, 0x4008642b, 0xbffff4f8) = 0
ioctl(4, 0x4008642a, 0xbffff500) = 0
ioctl(4, 0xc0086451, 0xbffff5c0) = 0
ioctl(4, 0x40106450, 0xbfffd490) = 0
ioctl(4, 0x40106450, 0xbffff520) = 0
ioctl(4, 0x40186448, 0xbffff6c0) = 0
ioctl(4, 0xc0286429, 0xbfffee70) = 0
ioctl(4, 0x40106450, 0xbffff650) = 0
ioctl(4, 0xc0086451, 0xbffff678) = 0
ioctl(4, 0x4008642b, 0xbffff678) = 0
ioctl(4, 0x40046457, 0x8061c4c) = -1 EBUSY (Device or resource busy)
write(2, "r200WaitIrq: drmRadeonIrqWait: -"..., 35) = 35
munmap(0xaf268000, 4096) = 0
exit_group(1) = ?

[Gavin Robertson (ubuntu-tatooine)]

After additional testing this only happens when booted with smp kernel so going
to close and try track down the root cause.

[Victor Bogado da Silva Lins (victor-bogado)]

I have a similar problem with my laptop, a TOSHIBA A65. It locks up after a few
minutes/seconds in a logged X session, but only if I am using a SMP kernel. This
happened in the hoary (5.04) and it still happening in the Breezy (5.10)
version. I know it can work because it is working correctly in fedora core 4. It
did happen in FC4 also but it was solved, follow this bug
"https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=152648" in the red hat
bugzilla. I would like to be able to use my hyperthreading in ubuntu.