------------[ 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: M51Ta              
GPU lockup (waiting for 0x000003C2 last fence id 0x000003BE)
Modules linked in: nls_iso8859_1 nls_cp437 vfat fat binfmt_misc parport_pc ppdev snd_hda_codec_atihdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec arc4 snd_hwdep joydev snd_pcm radeon(+) snd_seq_midi kvm_amd snd_rawmidi rfcomm snd_seq_midi_event ath9k ath9k_common snd_seq snd_timer snd_seq_device sco kvm r852 sm_common nand nand_ids nand_ecc mtd ath9k_hw snd bnep l2cap ath psmouse soundcore mac80211 ttm drm_kms_helper drm i2c_algo_bit video output uvcvideo btusb i2c_piix4 edac_core edac_mce_amd k10temp videodev v4l1_compat v4l2_compat_ioctl32 bluetooth snd_page_alloc shpchp asus_laptop serio_raw cfg80211 sparse_keymap lp parport mmc_block sdhci_pci sdhci led_class firewire_ohci firewire_core crc_itu_t pata_atiixp ahci libahci r8169 mii
Pid: 1269, comm: Xorg Tainted: G      D     2.6.35-17-generic #23-Ubuntu
Call Trace:
 [<ffffffff8105f72f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8105f826>] warn_slowpath_fmt+0x46/0x50
 [<ffffffffa03c75e5>] radeon_fence_wait+0x365/0x3d0 [radeon]
 [<ffffffff8107e510>] ? autoremove_wake_function+0x0/0x40
 [<ffffffffa03c7de1>] radeon_sync_obj_wait+0x11/0x20 [radeon]
 [<ffffffffa01a81a3>] ttm_bo_wait+0x103/0x1c0 [ttm]
 [<ffffffffa03deb17>] radeon_gem_wait_idle_ioctl+0x97/0x140 [radeon]
 [<ffffffffa017631a>] drm_ioctl+0x34a/0x4c0 [drm]
 [<ffffffffa03dea80>] ? radeon_gem_wait_idle_ioctl+0x0/0x140 [radeon]
 [<ffffffff81586c35>] ? _raw_spin_lock_irq+0x15/0x20
 [<ffffffff810097d1>] ? handle_signal+0x131/0x280
 [<ffffffff810099a1>] ? do_signal+0x81/0x1a0
 [<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 fae7486d812181ac ]---