Xorg freeze: "Try Ubuntu" leads to black screen with a white cursor and keyboard issues

Bug #757141 reported by rww
18
This bug affects 2 people
Affects Status Importance Assigned to Milestone
xserver-xorg-driver-ati
Confirmed
High
xserver-xorg-video-ati (Ubuntu)
Incomplete
High
Unassigned

Bug Description

Binary package hint: xorg

I booted a LiveUSB of the current natty daily ISO. It got to the screen where it asks whether I want to Try or Install Ubuntu. I selected "Try". It switched back to the console, then loaded xorg with a cursor in the center of the screen and a black background and stopped. I could move the cursor around with my mouse, but Ctrl-Alt-F1 didn't do anything. I eventually did Alt-Sysrq-R and Alt-Sysrq-K to restart xorg, logged in on gdm, and got to a normal desktop.

Xorg.0.log
[ 200.269] [mi] EQ overflowing. The server is probably stuck in an infinite loop.
[ 200.269]
Backtrace:
[ 200.270] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a24d6]
[ 200.270] 1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a1794]
[ 200.270] 2: /usr/bin/X (xf86PostMotionEventM+0x97) [0x47d687]
[ 200.270] 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f1379cf8000+0x5f7b) [0x7f1379cfdf7b]
[ 200.270] 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f1379cf8000+0x666d) [0x7f1379cfe66d]
[ 200.270] 5: /usr/bin/X (0x400000+0x6c627) [0x46c627]
[ 200.270] 6: /usr/bin/X (0x400000+0x124a9e) [0x524a9e]
[ 200.270] 7: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f137eee5000+0xfc60) [0x7f137eef4c60]
[ 200.270] 8: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7f137deed297]
[ 200.270] 9: /lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7f137c487058]
[ 200.270] 10: /lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWriteRead+0x1c) [0x7f137c48934c]
[ 200.270] 11: /lib/x86_64-linux-gnu/libdrm_radeon.so.1 (0x7f137bb64000+0x1ab9) [0x7f137bb65ab9]
[ 200.270] 12: /lib/x86_64-linux-gnu/libdrm_radeon.so.1 (0x7f137bb64000+0x1b04) [0x7f137bb65b04]
[ 200.270] 13: /usr/lib/xorg/modules/drivers/radeon_drv.so (0x7f137bd6b000+0xb53c9) [0x7f137be203c9]
[ 200.270] 14: /usr/lib/xorg/modules/libexa.so (0x7f137b116000+0xbf2c) [0x7f137b121f2c]
[ 200.270] 15: /usr/bin/X (0x400000+0x1609c9) [0x5609c9]
[ 200.270] 16: /usr/bin/X (0x400000+0xa53a3) [0x4a53a3]
[ 200.270] 17: /usr/bin/X (0x400000+0xd4e48) [0x4d4e48]
[ 200.270] 18: /usr/bin/X (0x400000+0x2e269) [0x42e269]
[ 200.270] 19: /usr/bin/X (0x400000+0x21a4e) [0x421a4e]
[ 200.270] 20: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) [0x7f137de2eeff]
[ 200.270] 21: /usr/bin/X (0x400000+0x215f9) [0x4215f9]

dmesg
[ 211.546090] SAK: killed process 1872 (console-kit-dae): fd#11 opened to the tty
[ 211.546092] SAK: killed process 1886 (console-kit-dae): fd#11 opened to the tty
[ 211.546095] SAK: killed process 1887 (console-kit-dae): fd#11 opened to the tty
[ 211.546148] SAK: killed process 4605 (Xorg): task_session(p)==tty->session
[ 224.800019] radeon 0000:01:00.0: GPU lockup CP stall for more than 10040msec
[ 224.800024] ------------[ cut here ]------------
[ 224.800056] WARNING: at /build/buildd/linux-2.6.38/drivers/gpu/drm/radeon/radeon_fence.c:248 radeon_fence_wait+0x36f/0x3e0 [radeon]()
[ 224.800060] Hardware name: P5K-E
[ 224.800062] GPU lockup (waiting for 0x00000173 last fence id 0x0000016D)
[ 224.800065] Modules linked in: parport_pc ppdev lp dm_crypt parport arc4 snd_hda_codec_hdmi snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep binfmt_misc snd_pcm ath9k snd_seq_midi mac80211 snd_rawmidi ath9k_common snd_seq_midi_event ath9k_hw snd_seq ath snd_timer snd_seq_device snd cfg80211 asus_atk0110 soundcore serio_raw snd_page_alloc squashfs aufs nls_iso8859_1 nls_cp437 vfat fat dm_raid45 xor btrfs zlib_deflate libcrc32c usb_storage usbhid hid uas radeon ttm drm_kms_helper drm ahci libahci sky2 i2c_algo_bit
[ 224.800111] Pid: 4857, comm: Xorg Not tainted 2.6.38-8-generic #41-Ubuntu
[ 224.800113] Call Trace:
[ 224.800122] [<ffffffff81065cef>] ? warn_slowpath_common+0x7f/0xc0
[ 224.800126] [<ffffffff81065de6>] ? warn_slowpath_fmt+0x46/0x50
[ 224.800146] [<ffffffffa00d26df>] ? radeon_fence_wait+0x36f/0x3e0 [radeon]
[ 224.800152] [<ffffffff81087f30>] ? autoremove_wake_function+0x0/0x40
[ 224.800171] [<ffffffffa00d2fc1>] ? radeon_sync_obj_wait+0x11/0x20 [radeon]
[ 224.800181] [<ffffffffa005ab0d>] ? ttm_bo_wait+0xfd/0x1b0 [ttm]
[ 224.800188] [<ffffffffa005ae88>] ? ttm_bo_list_ref_sub+0x28/0x30 [ttm]
[ 224.800209] [<ffffffffa00eb9e3>] ? radeon_gem_wait_idle_ioctl+0x93/0x110 [radeon]
[ 224.800224] [<ffffffffa0022384>] ? drm_ioctl+0x3e4/0x4c0 [drm]
[ 224.800245] [<ffffffffa00eb950>] ? radeon_gem_wait_idle_ioctl+0x0/0x110 [radeon]
[ 224.800251] [<ffffffff8100b7b1>] ? handle_signal+0x131/0x260
[ 224.800256] [<ffffffff810156d1>] ? fpu_finit+0x21/0x40
[ 224.800259] [<ffffffff810157fa>] ? init_fpu+0x4a/0x150
[ 224.800265] [<ffffffff8117648f>] ? do_vfs_ioctl+0x8f/0x360
[ 224.800269] [<ffffffff8100bd06>] ? sys_rt_sigreturn+0x106/0x140
[ 224.800273] [<ffffffff811767f1>] ? sys_ioctl+0x91/0xa0
[ 224.800276] [<ffffffff8100c002>] ? system_call_fastpath+0x16/0x1b
[ 224.800280] ---[ end trace 4b79756e0a682393 ]---

From the photos it shows a slightly different trace for an oops related to the compiz process:
radeon_gart_bind
radeon_ttm_backend_bind
ttm_tt_bind
ttm_bo_move_ttm
ttm_bo_handle_move_mem
ttm_bo_move_buffer
ttm_bo_validate
radeon_bo_list_validate
radeon_cs_parser_relocs
radeon_cs_ioctl
drm_ioctl
? handle_mm_fault
? radeon_cs_ioctl
? do_page_fault
do_vfs_iotcl
sys_iotcl
system_call_fastpath

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
Date: Mon Apr 11 05:50:59 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
GdmLog2:

GraphicsCard:
 ATI Technologies Inc RV620 LE [Radeon HD 3450] [1002:95c5] (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:01f4]
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110410)
MachineType: System manufacturer P5K-E
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
Renderer: Unknown
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/19/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1305
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5K-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1305:bd06/19/2009:svnSystemmanufacturer:pnP5K-E:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5K-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: P5K-E
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.4+bzr20110407-0ubuntu2
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6

Revision history for this message
rww (rww-deactivatedaccount) wrote :
bugbot (bugbot)
affects: xorg (Ubuntu) → xserver-xorg-input-evdev (Ubuntu)
Timo Aaltonen (tjaalton)
affects: xserver-xorg-input-evdev (Ubuntu) → xserver-xorg-video-ati (Ubuntu)
bugbot (bugbot)
tags: added: black-screen
Bryce Harrington (bryce)
description: updated
description: updated
Changed in xserver-xorg-video-ati (Ubuntu):
status: New → Confirmed
importance: Undecided → High
Revision history for this message
Bryce Harrington (bryce) wrote :

Hi rww, a few questions:

1. Is this a regression? You mentioned you saw it with the current natty daily ISO. Have you been testing dailies previously without encountering this problem? If so, what was the most recent day's ISO prior to this one that did not show this problem?

2. Is this issue repeatable? Please re-try booting the LiveUSB multiple times and note the number of times you encounter this bug, vs. times you did not.

3. Have you tried other daily images since 4/10? Do they show the same symptoms?

From the symptoms it sort of sounds like perhaps X got loaded up before some underlying drivers or services were ready. That seems odd. Is there anything more you can tell me about the bug that might help shed light on it?

Changed in xserver-xorg-video-ati (Ubuntu):
status: Confirmed → Incomplete
Revision history for this message
rww (rww-deactivatedaccount) wrote :

Hi Bryce,

1. I took a break from testing for a few months, so I'm not sure whether it's a regression. It didn't happen in maverick. The daily I used to report this bug is the first one I'd used since Unity was released into natty.

2&3. I re-booted the LiveUSB ten times using the April 20th daily from http://cdimage.ubuntu.com/daily-live/current/ . Each time, I booted up, clicked Try Ubuntu, observed the result, and then shut down the machine either via the indicator (if Unity loaded), with Alt-SysRq-B and then a poweroff when the BIOS came up (if the symptoms I mentioned above happened), or with a poweroff if Alt-SysRq-B didn't work. Results:

 * Attempts 1, 4, 7, and 8 succeeded and loaded Unity properly.
 * Attempts 2, 6, and 10 stopped as described in the original report, with a black screen and a movable mouse cursor. Alt-Sysrq-B worked.
 * On attempts 3 and 9, the monitor turned off. Alt-Sysrq-B did not have any effect.
 * On attempt 5, I received a kernel panic (?). I will attach a .zip containing photographs of the message. I apologize for the poor quality of some of the images. There was a non-functional mouse cursor in the center of the screen. Alt-Sysrq-B did not have any effect.

Thoughts: I have also installed natty to my computer and have been using it for a couple of weeks. When selecting Unity, after login about 25% to 50% of the time, I get the Ubuntu background and a mouse cursor, but Unity never loads. I suspect the same root cause as this bug, given the similar symptoms. I have since switched to GNOME 3 from the (unofficial and unsupported, I know) PPA, and it does not exhibit the same problems. My suspicion is that this issue is being triggered by Unity and/or Compiz using a codepath in the radeon driver that has a bug.

Revision history for this message
Bryce Harrington (bryce) wrote :

Thanks for the photos. Yeah looks like the compiz process triggered a page fault in the radeon drm module which caused a kernel OOPS.

IMG_0686 has the clearest call trace. I'll add that to the bug description.

IMG_0689 shows the top of the oops report pretty clearly.

description: updated
tags: added: regression-release
Revision history for this message
Bryce Harrington (bryce) wrote :
Revision history for this message
Bryce Harrington (bryce) wrote :
Revision history for this message
Bryce Harrington (bryce) wrote :

rww, do a system update; your mesa is a bit old, so try reproducing the bug with mesa 7.10.2-0ubuntu2.

Changed in xserver-xorg-video-ati (Ubuntu):
status: Incomplete → New
status: New → Incomplete
Changed in xserver-xorg-driver-ati:
importance: Unknown → High
status: Unknown → Confirmed
Revision history for this message
Raul SA (raulsiguenza) wrote :
Download full text (4.4 KiB)

Im having the same problem. I have an ATI Radeon™ HD 2400 Pro AGP card [RV610].

Sometimes occur when the graphics are loading, as in this case.

And sometimes occurs in Unity desktop (like bug #774909).

dmesg

[ 67.512038] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[ 67.512045] ------------[ cut here ]------------
[ 67.512092] WARNING: at /build/buildd/linux-2.6.38/drivers/gpu/drm/radeon/radeon_fence.c:248 radeon_fence_wait+0x2ea/0x350 [radeon]()
[ 67.512097] Hardware name: P4V88
[ 67.512100] GPU lockup (waiting for 0x000006CA last fence id 0x000006C6)
[ 67.512103] Modules linked in: parport_pc ppdev lp dm_crypt parport snd_via82xx gameport snd_ac97_codec ac97_bus snd_pcm binfmt_misc snd_page_alloc snd_mpu401_uart snd_seq_midi snd_rawmidi snd_seq_midi_event arc4 rt61pci crc_itu_t snd_seq rt2x00pci rt2x00lib psmouse snd_timer mac80211 snd_seq_device joydev serio_raw snd cfg80211 i2c_viapro soundcore shpchp eeprom_93cx6 squashfs aufs nls_iso8859_1 nls_cp437 vfat fat dm_raid45 xor btrfs zlib_deflate libcrc32c radeon usbhid ttm hid drm_kms_helper drm usb_storage uas i2c_algo_bit via_rhine sata_via pata_via
[ 67.512168] Pid: 3025, comm: compiz Not tainted 2.6.38-8-generic #42-Ubuntu
[ 67.512171] Call Trace:
[ 67.512185] [<c104f912>] ? warn_slowpath_common+0x72/0xa0
[ 67.512210] [<f828366a>] ? radeon_fence_wait+0x2ea/0x350 [radeon]
[ 67.512234] [<f828366a>] ? radeon_fence_wait+0x2ea/0x350 [radeon]
[ 67.512240] [<c104f9e3>] ? warn_slowpath_fmt+0x33/0x40
[ 67.512263] [<f828366a>] ? radeon_fence_wait+0x2ea/0x350 [radeon]
[ 67.512273] [<c106d370>] ? autoremove_wake_function+0x0/0x50
[ 67.512296] [<f8283ed1>] ? radeon_sync_obj_wait+0x11/0x20 [radeon]
[ 67.512309] [<f80e1719>] ? ttm_bo_wait+0xd9/0x170 [ttm]
[ 67.512320] [<f80e3dc2>] ? ttm_bo_move_accel_cleanup+0x162/0x1e0 [ttm]
[ 67.512344] [<f82841aa>] ? radeon_move_blit.clone.0+0x13a/0x1b0 [radeon]
[ 67.512368] [<f8284465>] ? radeon_move_ram_vram.clone.2+0x105/0x120 [radeon]
[ 67.512378] [<f80e19f2>] ? ttm_bo_list_ref_sub+0x22/0x30 [ttm]
[ 67.512388] [<f80e0072>] ? ttm_tt_set_caching+0x2/0x1f0 [ttm]
[ 67.512410] [<f828462a>] ? radeon_bo_move+0x1aa/0x1c0 [radeon]
[ 67.512420] [<f80e21c0>] ? ttm_bo_unmap_virtual_locked+0x50/0x60 [ttm]
[ 67.512443] [<f8284480>] ? radeon_bo_move+0x0/0x1c0 [radeon]
[ 67.512453] [<f80e22fd>] ? ttm_bo_handle_move_mem+0x12d/0x380 [ttm]
[ 67.512477] [<f8285930>] ? radeon_bo_move_notify+0x0/0x30 [radeon]
[ 67.512487] [<f80e3195>] ? ttm_bo_move_buffer+0x125/0x140 [ttm]
[ 67.512498] [<f80e19f2>] ? ttm_bo_list_ref_sub+0x22/0x30 [ttm]
[ 67.512506] [<f80e0072>] ? ttm_tt_set_caching+0x2/0x1f0 [ttm]
[ 67.512516] [<f80e3258>] ? ttm_bo_validate+0xa8/0x120 [ttm]
[ 67.512539] [<f8285533>] ? radeon_bo_list_validate+0x73/0xd0 [radeon]
[ 67.512567] [<f829c619>] ? radeon_cs_parser_relocs+0x209/0x250 [radeon]
[ 67.512594] [<f829c8a9>] ? radeon_cs_parser_init+0x249/0x2a0 [radeon]
[ 67.512621] [<f829ca25>] ? radeon_cs_ioctl+0x75/0x180 [radeon]
[ 67.512642] [<f80b4cd1>] ? drm_ioctl+0x1e1/0x470 [drm]
[ 67.512671] [<f829c9b0>] ? radeon_cs_ioctl+0x0/0x180 [radeon]
[ 67.512680] [<c1101627>] ? handle_mm_fault+0xb7/0x120
[ 67.512687] [<c150ce00>] ? do_page_fault+0x0/0x490
[ 67.51...

Read more...

Revision history for this message
Sam_ (and-sam) wrote :

After five days with no issue it occurs again out of nothing. Since I've read over some bug reports I wonder if it has something to do with gfxpayload.

Revision history for this message
Sam_ (and-sam) wrote :
Revision history for this message
harald cerny (harald-cerny) wrote :

i keep seeing this as well.

stacktrace looks like this:

May 12 12:53:54 kasperl kernel: [15845.850266] radeon 0000:0e:00.0: GPU lockup CP stall for more than 10000msec
May 12 12:53:54 kasperl kernel: [15845.850271] ------------[ cut here ]------------
May 12 12:53:54 kasperl kernel: [15845.850319] WARNING: at /build/buildd/linux-2.6.38/drivers/gpu/drm/radeon/radeon_fence.c:248 radeon_fence_wait+0x36f/0x3e0 [radeon]()
May 12 12:53:54 kasperl kernel: [15845.850321] Hardware name: MacPro1,1
May 12 12:53:54 kasperl kernel: [15845.850322] GPU lockup (waiting for 0x0002D4AA last fence id 0x0002D4A9)
May 12 12:53:54 kasperl kernel: [15845.850324] Modules linked in: binfmt_misc sco bnep l2cap parport_pc ppdev btusb bluetooth snd_hda_codec_realtek lm63 snd_hda_intel snd_hda
_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi radeon applesmc lib80211_crypt_tkip input_polldev snd_seq_midi_event ttm wl(P) drm_kms_helper snd_seq snd_timer snd_seq_devi
ce i5000_edac edac_core i5k_amb ioatdma drm lib80211 dca i2c_algo_bit snd soundcore snd_page_alloc shpchp lp parport usbhid hid firewire_ohci firewire_core crc_itu_t e1000e
May 12 12:53:54 kasperl kernel: [15845.850353] Pid: 903, comm: Xorg Tainted: P 2.6.38-8-generic #42-Ubuntu
May 12 12:53:54 kasperl kernel: [15845.850355] Call Trace:
May 12 12:53:54 kasperl kernel: [15845.850362] [<ffffffff81065cef>] ? warn_slowpath_common+0x7f/0xc0
May 12 12:53:54 kasperl kernel: [15845.850365] [<ffffffff81065de6>] ? warn_slowpath_fmt+0x46/0x50
May 12 12:53:54 kasperl kernel: [15845.850375] [<ffffffffa03dc6df>] ? radeon_fence_wait+0x36f/0x3e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850379] [<ffffffff81087f30>] ? autoremove_wake_function+0x0/0x40
May 12 12:53:54 kasperl kernel: [15845.850391] [<ffffffffa03f607d>] ? radeon_ib_get+0x12d/0x1e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850402] [<ffffffffa03f7a4e>] ? radeon_cs_ioctl+0x8e/0x1e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850415] [<ffffffffa00ee384>] ? drm_ioctl+0x3e4/0x4c0 [drm]
May 12 12:53:54 kasperl kernel: [15845.850418] [<ffffffff81134790>] ? __remove_shared_vm_struct.clone.30+0x40/0x60
May 12 12:53:54 kasperl kernel: [15845.850429] [<ffffffffa03f79c0>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon]
May 12 12:53:54 kasperl kernel: [15845.850433] [<ffffffff812e2055>] ? timerqueue_del+0x35/0x90
May 12 12:53:54 kasperl kernel: [15845.850436] [<ffffffff8108b89b>] ? __remove_hrtimer+0x3b/0x80
May 12 12:53:54 kasperl kernel: [15845.850439] [<ffffffff8108bc5c>] ? hrtimer_try_to_cancel+0x4c/0xe0
May 12 12:53:54 kasperl kernel: [15845.850442] [<ffffffff8117648f>] ? do_vfs_ioctl+0x8f/0x360
May 12 12:53:54 kasperl kernel: [15845.850445] [<ffffffff8106b4b4>] ? sys_setitimer+0x64/0xe0
May 12 12:53:54 kasperl kernel: [15845.850448] [<ffffffff811767f1>] ? sys_ioctl+0x91/0xa0
May 12 12:53:54 kasperl kernel: [15845.850451] [<ffffffff8100c002>] ? system_call_fastpath+0x16/0x1b
May 12 12:53:54 ka

graphics card is a radeon R580 / X1900 XT. i'm getting these freezes only since upgrading to natty, no issues with maverick. also, i cant use unity3d; if i try, monitor just turns black and goes to sleep.

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