i keep seeing this as well.
stacktrace looks like this:
May 12 12:53:54 kasperl kernel: [15845.850266] radeon 0000:0e:00.0: GPU lockup
CP stall for more than 10000msec
May 12 12:53:54 kasperl kernel: [15845.850271] ------------[ cut here
]------------
May 12 12:53:54 kasperl kernel: [15845.850319] WARNING: at
/build/buildd/linux-2.6.38/drivers/gpu/drm/radeon/radeon_fence.c:248
radeon_fence_wait+0x36f/0x3e0 [radeon]()
May 12 12:53:54 kasperl kernel: [15845.850321] Hardware name: MacPro1,1
May 12 12:53:54 kasperl kernel: [15845.850322] GPU lockup (waiting for
0x0002D4AA last fence id 0x0002D4A9)
May 12 12:53:54 kasperl kernel: [15845.850324] Modules linked in: binfmt_misc
sco bnep l2cap parport_pc ppdev btusb bluetooth snd_hda_codec_realtek lm63
snd_hda_intel snd_hda
_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi radeon applesmc
lib80211_crypt_tkip input_polldev snd_seq_midi_event ttm wl(P) drm_kms_helper
snd_seq snd_timer snd_seq_devi
ce i5000_edac edac_core i5k_amb ioatdma drm lib80211 dca i2c_algo_bit snd
soundcore snd_page_alloc shpchp lp parport usbhid hid firewire_ohci
firewire_core crc_itu_t e1000e
May 12 12:53:54 kasperl kernel: [15845.850353] Pid: 903, comm: Xorg Tainted: P
2.6.38-8-generic #42-Ubuntu
May 12 12:53:54 kasperl kernel: [15845.850355] Call Trace:
May 12 12:53:54 kasperl kernel: [15845.850362] [<ffffffff81065cef>] ?
warn_slowpath_common+0x7f/0xc0
May 12 12:53:54 kasperl kernel: [15845.850365] [<ffffffff81065de6>] ?
warn_slowpath_fmt+0x46/0x50
May 12 12:53:54 kasperl kernel: [15845.850375] [<ffffffffa03dc6df>] ?
radeon_fence_wait+0x36f/0x3e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850379] [<ffffffff81087f30>] ?
autoremove_wake_function+0x0/0x40
May 12 12:53:54 kasperl kernel: [15845.850391] [<ffffffffa03f607d>] ?
radeon_ib_get+0x12d/0x1e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850402] [<ffffffffa03f7a4e>] ?
radeon_cs_ioctl+0x8e/0x1e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850415] [<ffffffffa00ee384>] ?
drm_ioctl+0x3e4/0x4c0 [drm]
May 12 12:53:54 kasperl kernel: [15845.850418] [<ffffffff81134790>] ?
__remove_shared_vm_struct.clone.30+0x40/0x60
May 12 12:53:54 kasperl kernel: [15845.850429] [<ffffffffa03f79c0>] ?
radeon_cs_ioctl+0x0/0x1e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850433] [<ffffffff812e2055>] ?
timerqueue_del+0x35/0x90
May 12 12:53:54 kasperl kernel: [15845.850436] [<ffffffff8108b89b>] ?
__remove_hrtimer+0x3b/0x80
May 12 12:53:54 kasperl kernel: [15845.850439] [<ffffffff8108bc5c>] ?
hrtimer_try_to_cancel+0x4c/0xe0
May 12 12:53:54 kasperl kernel: [15845.850442] [<ffffffff8117648f>] ?
do_vfs_ioctl+0x8f/0x360
May 12 12:53:54 kasperl kernel: [15845.850445] [<ffffffff8106b4b4>] ?
sys_setitimer+0x64/0xe0
May 12 12:53:54 kasperl kernel: [15845.850448] [<ffffffff811767f1>] ?
sys_ioctl+0x91/0xa0
May 12 12:53:54 kasperl kernel: [15845.850451] [<ffffffff8100c002>] ?
system_call_fastpath+0x16/0x1b
May 12 12:53:54 ka
graphics card is a radeon R580 / X1900 XT. i'm getting these freezes
only since upgrading to natty, no issues with maverick. also, i cant use
unity3d; if i try, monitor just turns black and goes to sleep.
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https://bugs.launchpad.net/bugs/757141
Title:
Xorg freeze: "Try Ubuntu" leads to black screen with a white cursor
and keyboard issues
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