[   16.271869] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
[   16.273073] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
[   16.273077] ata1.00: configured for UDMA/133
[   16.273082] ata1: EH complete
[   16.624913] ata4.00: SB600 AHCI: limiting to 255 sectors per cmd
[   16.625625] ata4.00: SB600 AHCI: limiting to 255 sectors per cmd
[   16.625630] ata4.00: configured for UDMA/133
[   16.625635] ata4: EH complete
[   17.042978] sky2 0000:02:00.0: eth0: Link is up at 100 Mbps, full duplex, flow control both
[   17.043183] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   20.680036] radeon 0000:01:00.0: GPU lockup CP stall for more than 1040msec
[   20.680042] ------------[ cut here ]------------
[   20.680068] WARNING: at /build/buildd/linux-2.6.35/drivers/gpu/drm/radeon/radeon_fence.c:235 radeon_fence_wait+0x23e/0x290 [radeon]()
[   20.680072] Hardware name: Aspire T671
[   20.680075] GPU lockup (waiting for 0x00000003 last fence id 0x00000001)
[   20.680078] Modules linked in: binfmt_misc snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm radeon snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq ttm drm_kms_helper snd_timer snd_seq_device ppdev drm ati_agp snd psmouse joydev parport_pc serio_raw soundcore snd_page_alloc i2c_algo_bit i2c_piix4 agpgart lp parport usb_storage firewire_ohci firewire_core usbhid hid floppy pata_atiixp crc_itu_t ahci libahci sky2
[   20.680126] Pid: 967, comm: Xorg Not tainted 2.6.35-20-generic #29-Ubuntu
[   20.680129] Call Trace:
[   20.680138]  [<c014ac52>] warn_slowpath_common+0x72/0xa0
[   20.680159]  [<f87952de>] ? radeon_fence_wait+0x23e/0x290 [radeon]
[   20.680179]  [<f87952de>] ? radeon_fence_wait+0x23e/0x290 [radeon]
[   20.680184]  [<c014ad23>] warn_slowpath_fmt+0x33/0x40
[   20.680204]  [<f87952de>] radeon_fence_wait+0x23e/0x290 [radeon]
[   20.680211]  [<c0165e10>] ? autoremove_wake_function+0x0/0x50
[   20.680231]  [<f8795a01>] radeon_sync_obj_wait+0x11/0x20 [radeon]
[   20.680240]  [<f8441e67>] ttm_bo_wait+0xe7/0x180 [ttm]
[   20.680263]  [<f87ab049>] radeon_gem_wait_idle_ioctl+0x89/0x110 [radeon]
[   20.680288]  [<f83ae98d>] drm_ioctl+0x1ad/0x430 [drm]
[   20.680307]  [<f87aafc0>] ? radeon_gem_wait_idle_ioctl+0x0/0x110 [radeon]
[   20.680314]  [<c010afb2>] ? restore_i387_xstate+0xe2/0x210
[   20.680319]  [<c0226652>] vfs_ioctl+0x32/0xb0
[   20.680329]  [<f83ae7e0>] ? drm_ioctl+0x0/0x430 [drm]
[   20.680333]  [<c0226ee9>] do_vfs_ioctl+0x79/0x2d0
[   20.680337]  [<c01021d6>] ? restore_sigcontext+0xc6/0xe0
[   20.680340]  [<c02271a7>] sys_ioctl+0x67/0x80
[   20.680345]  [<c05c8c04>] syscall_call+0x7/0xb
[   20.680349] ---[ end trace df0e0e7d7fa3e1f3 ]---
[   20.854123] Failed to wait GUI idle while programming pipes. Bad things might happen.
[   20.855191] radeon 0000:01:00.0: (r300_asic_reset:415) RBBM_STATUS=0x80010140
[   21.356326] radeon 0000:01:00.0: (r300_asic_reset:434) RBBM_STATUS=0x80010140
[   21.853457] radeon 0000:01:00.0: (r300_asic_reset:446) RBBM_STATUS=0x00000140
[   21.853487] radeon 0000:01:00.0: restoring config space at offset 0x1 (was 0x20100403, writing 0x20100407)
[   21.853515] radeon 0000:01:00.0: GPU reset succeed
[   21.853518] radeon 0000:01:00.0: GPU reset succeed
[   21.853523] radeon 0000:01:00.0: f3147200 unpin not necessary
[   21.877991] [drm] PCIE GART of 512M enabled (table at 0xD8040000).
[   21.878002] [drm] radeon: 3 quad pipes, 1 z pipes initialized.
[   21.878029] [drm] radeon: ring at 0x00000000B8000000
[   21.878049] [drm] ring test succeeded in 0 usecs
[   21.878059] [drm] ib test succeeded in 1 usecs
[   22.446605] EXT4-fs (sdb6): re-mounted. Opts: errors=remount-ro,commit=0
[   27.312025] eth0: no IPv6 routers present