>[    7.971273] ------------[ 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: OEM
GPU lockup (waiting for 0x00000003 last fence id 0x00000001)
Modules linked in: parport_pc ppdev tuner_xc2028 tuner ir_lirc_codec lirc_dev ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_rc5_decoder ir_nec_decoder snd_hda_codec_atihdmi cx25840 snd_virtuoso snd_oxygen_lib cx23885 ir_core snd_hda_intel snd_hda_codec snd_mpu401_uart snd_hwdep snd_pcm snd_seq_midi cx2341x snd_rawmidi snd_seq_midi_event v4l2_common videodev v4l1_compat snd_seq snd_timer snd_seq_device v4l2_compat_ioctl32 videobuf_dma_sg snd videobuf_dvb dvb_core videobuf_core btcx_risc soundcore radeon ttm tveeprom snd_page_alloc drm_kms_helper drm i2c_algo_bit lp shpchp x38_edac edac_core parport usbhid hid usb_storage floppy sky2 pata_jmicron ahci libahci
Pid: 400, comm: plymouthd Not tainted 2.6.35-22-generic #32-Ubuntu
Call Trace:
 [<ffffffff8106077f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff81060876>] warn_slowpath_fmt+0x46/0x50
 [<ffffffffa013e6f5>] radeon_fence_wait+0x365/0x3d0 [radeon]
 [<ffffffff8107f610>] ? autoremove_wake_function+0x0/0x40
 [<ffffffffa013eef1>] radeon_sync_obj_wait+0x11/0x20 [radeon]
 [<ffffffffa00f61a3>] ttm_bo_wait+0x103/0x1c0 [ttm]
 [<ffffffffa00fa641>] ttm_bo_vm_fault+0x231/0x2f0 [ttm]
 [<ffffffffa013ee9b>] radeon_ttm_fault+0x5b/0x80 [radeon]
 [<ffffffff8111db34>] __do_fault+0x54/0x560
 [<ffffffff81120a69>] handle_mm_fault+0x1b9/0x440
 [<ffffffff8116295d>] ? vfs_ioctl+0x3d/0xd0
 [<ffffffff8158ce3a>] do_page_fault+0x12a/0x350
 [<ffffffff815899b5>] page_fault+0x25/0x30
---[ end trace 2afe2db2b86c3141 ]---