------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/drivers/gpu/drm/radeon/radeon_fence.c:235 radeon_fence_wait+0x23e/0x290 [radeon]()
Hardware name: Satellite L505D
GPU lockup (waiting for 0x000C4968 last fence id 0x000C495C)
Modules linked in: aes_i586 aes_generic vboxdrv ppdev binfmt_misc kvm_amd kvm dm_crypt snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi usbhid hid snd_rawmidi joydev snd_seq_midi_event snd_seq r8187se(C) snd_timer snd_seq_device snd soundcore lp psmouse r8169 snd_page_alloc i2c_piix4 eeprom_93cx6 shpchp serio_raw k10temp mii parport ahci libahci vga16fb vgastate radeon ttm drm_kms_helper drm video output usb_storage agpgart i2c_algo_bit
Pid: 1094, comm: Xorg Tainted: G        WC  2.6.35-2-generic #3-Ubuntu
Call Trace:
 [<c014c162>] warn_slowpath_common+0x72/0xa0
 [<f83dbcde>] ? radeon_fence_wait+0x23e/0x290 [radeon]
 [<f83dbcde>] ? radeon_fence_wait+0x23e/0x290 [radeon]
 [<c014c233>] warn_slowpath_fmt+0x33/0x40
 [<f83dbcde>] radeon_fence_wait+0x23e/0x290 [radeon]
 [<c01673a0>] ? autoremove_wake_function+0x0/0x50
 [<f83dc401>] radeon_sync_obj_wait+0x11/0x20 [radeon]
 [<f82a1e67>] ttm_bo_wait+0xe7/0x180 [ttm]
 [<f83f1949>] radeon_gem_wait_idle_ioctl+0x89/0x110 [radeon]
 [<f8230997>] drm_ioctl+0x1a7/0x400 [drm]
 [<f83f18c0>] ? radeon_gem_wait_idle_ioctl+0x0/0x110 [radeon]
 [<c010b142>] ? restore_i387_xstate+0xe2/0x210
 [<c0304374>] ? security_file_permission+0x14/0x20
 [<c0219694>] ? rw_verify_area+0x64/0xe0
 [<c02277c2>] vfs_ioctl+0x32/0xb0
 [<f82307f0>] ? drm_ioctl+0x0/0x400 [drm]
 [<c0228039>] do_vfs_ioctl+0x79/0x2d0
 [<c01021d6>] ? restore_sigcontext+0xc6/0xe0
 [<c02282f7>] sys_ioctl+0x67/0x80
 [<c05cde0c>] syscall_call+0x7/0xb
---[ end trace 4082bbfb4b1a4e56 ]---