------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.38/drivers/gpu/drm/radeon/radeon_fence.c:248 radeon_fence_wait+0x2ea/0x350 [radeon]()
Hardware name: Satellite A215
GPU lockup (waiting for 0x0005D9B2 last fence id 0x0005D9B0)
Modules linked in: cryptd aes_i586 aes_generic binfmt_misc parport_pc ppdev snd_hda_codec_realtek radeon snd_hda_intel snd_hda_codec ttm snd_hwdep snd_pcm drm_kms_helper snd_seq_midi drm snd_rawmidi snd_seq_midi_event i2c_algo_bit joydev snd_seq arc4 shpchp snd_timer snd_seq_device pcmcia sp5100_tco snd ath5k psmouse ath lp parport i2c_piix4 serio_raw tifm_7xx1 tifm_core yenta_socket pcmcia_rsrc ati_agp mac80211 k8temp soundcore snd_page_alloc cfg80211 sparse_keymap uvcvideo videodev video pcmcia_core firewire_ohci firewire_core sdhci_pci ahci libahci r8169 sdhci crc_itu_t pata_atiixp
Pid: 1068, comm: Xorg Not tainted 2.6.38-8-generic #41-Ubuntu
Call Trace:
 [<c104f912>] ? warn_slowpath_common+0x72/0xa0
 [<f87ae66a>] ? radeon_fence_wait+0x2ea/0x350 [radeon]
 [<f87ae66a>] ? radeon_fence_wait+0x2ea/0x350 [radeon]
 [<c104f9e3>] ? warn_slowpath_fmt+0x33/0x40
 [<f87ae66a>] ? radeon_fence_wait+0x2ea/0x350 [radeon]
 [<c106d370>] ? autoremove_wake_function+0x0/0x50
 [<f87aeed1>] ? radeon_sync_obj_wait+0x11/0x20 [radeon]
 [<f864b719>] ? ttm_bo_wait+0xd9/0x170 [ttm]
 [<f87c5d52>] ? radeon_gem_wait_idle_ioctl+0x82/0xe0 [radeon]
 [<f8608cd1>] ? drm_ioctl+0x1e1/0x470 [drm]
 [<f87c5cd0>] ? radeon_gem_wait_idle_ioctl+0x0/0xe0 [radeon]
 [<c112794f>] ? do_readv_writev+0x14f/0x190
 [<c1126e1c>] ? rw_verify_area+0x6c/0x130
 [<f8608af0>] ? drm_ioctl+0x0/0x470 [drm]
 [<c11367cb>] ? do_vfs_ioctl+0x7b/0x2e0
 [<c11279df>] ? vfs_writev+0x4f/0x60
 [<c1136ab7>] ? sys_ioctl+0x87/0x90
 [<c1509c24>] ? syscall_call+0x7/0xb
---[ end trace 0216ce77e2469fe4 ]---