------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/drivers/gpu/drm/radeon/radeon_fence.c:235 radeon_fence_wait+0x365/0x3d0 [radeon]()
Hardware name: Satellite C655D
GPU lockup (waiting for 0x00002BD7 last fence id 0x00002BCC)
Modules linked in: cryptd aes_x86_64 aes_generic binfmt_misc parport_pc ppdev snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_pcm arc4 snd_seq_midi snd_rawmidi ath9k ath9k_common snd_seq_midi_event joydev snd_seq snd_timer ath9k_hw snd_seq_device ath radeon mac80211 snd ttm cfg80211 soundcore snd_page_alloc drm_kms_helper drm edac_core edac_mce_amd led_class i2c_piix4 i2c_algo_bit k10temp shpchp psmouse video output serio_raw lp parport usb_storage ahci libahci atl1c
Pid: 1106, comm: Xorg Not tainted 2.6.35-17-generic #23-Ubuntu
Call Trace:
 [<ffffffff8105f72f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8105f826>] warn_slowpath_fmt+0x46/0x50
 [<ffffffffa02235e5>] radeon_fence_wait+0x365/0x3d0 [radeon]
 [<ffffffff8107e510>] ? autoremove_wake_function+0x0/0x40
 [<ffffffffa02238a0>] ? radeon_fence_create+0xd0/0x140 [radeon]
 [<ffffffffa023b53d>] radeon_ib_get+0x12d/0x250 [radeon]
 [<ffffffffa023caee>] radeon_cs_ioctl+0x8e/0x1e0 [radeon]
 [<ffffffffa00d031a>] drm_ioctl+0x34a/0x4c0 [drm]
 [<ffffffffa023ca60>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon]
 [<ffffffff81586c35>] ? _raw_spin_lock_irq+0x15/0x20
 [<ffffffff81586c35>] ? _raw_spin_lock_irq+0x15/0x20
 [<ffffffff81431beb>] ? evdev_read+0x12b/0x290
 [<ffffffff8116171d>] vfs_ioctl+0x3d/0xd0
 [<ffffffff81161ff1>] do_vfs_ioctl+0x81/0x340
 [<ffffffff81009da5>] ? sys_rt_sigreturn+0x235/0x250
 [<ffffffff81162331>] sys_ioctl+0x81/0xa0
 [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
---[ end trace 5cde1f00d2311cd9 ]---