Hi there,
since upgrading from kernel 3.4.10 to 3.5.x or 3.6.2 (on Kubuntu
12.04) I am getting sporadic (but frequent) lockups when switching
displays using xrandr:
/usr/bin/xrandr -d :0.0 --output LVDS1 --off --output HDMI3
--mode 1600x1200 --primary --auto
sleep 2
/usr/bin/xrandr -d :0.0 --output HDMI2 --mode 1600x1200
--right-of HDMI3 --auto
$ uname -a
Linux orion 3.6.2 #41 SMP Tue Oct 16 23:45:38 CEST 2012 x86_64 x86_64
x86_64 GNU/Linux
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation
Core Processor Family Integrated Graphics Controller (rev 09) (prog-if
00 [VGA controller])
Subsystem: Lenovo Device 21d2
Flags: bus master, fast devsel, latency 0, IRQ 46
Memory at f000 (64-bit, non-prefetchable) [size=4M]
Memory at e000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at [disabled]
Capabilities:
Kernel driver in use: i915
Kernel modules: i915
When the lockup happens the local display is completely unresponsive,
but connecting via ssh shows the following stuck tasks:
[ 479.796787] INFO: task kworker/2:2:360 blocked for more than 120 seconds.
[ 479.796798] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 479.796803] kworker/2:2 D 0 360 2 0x
[ 479.796815] 88020ffb7c30 0046 88020fcfa080
88020ffb7fd8
[ 479.796825] 88020ffb7fd8 88020ffb7fd8 8802148c2080
88020fcfa080
[ 479.796834] 88020fcfa790 8802024a 88020fcfa740
0002
[ 479.796844] Call Trace:
[ 479.796862] [] ? mark_held_locks+0x61/0x140
[ 479.796876] [] ? mutex_lock_nested+0x1e5/0x320
[ 479.796890] [] schedule+0x24/0x70
[ 479.796902] [] schedule_preempt_disabled+0x9/0x10
[ 479.796915] [] mutex_lock_nested+0x151/0x320
[ 479.796956] [] ? output_poll_execute+0x51/0x1a0
[drm_kms_helper]
[ 479.796973] [] output_poll_execute+0x51/0x1a0
[drm_kms_helper]
[ 479.796984] [] process_one_work+0x18a/0x520
[ 479.796992] [] ? process_one_work+0x12e/0x520
[ 479.797001] [] ? do_raw_spin_lock+0x54/0x120
[ 479.797016] [] ?
drm_helper_connector_dpms+0x100/0x100 [drm_kms_helper]
[ 479.797032] [] worker_thread+0x18f/0x4f0
[ 479.797039] [] ? _raw_spin_unlock_irqrestore+0x3a/0x70
[ 479.797047] [] ? trace_hardirqs_on+0xd/0x10
[ 479.797055] [] ? rescuer_thread+0x290/0x290
[ 479.797063] [] kthread+0xa9/0xb0
[ 479.797069] [] ? trace_hardirqs_on+0xd/0x10
[ 479.797078] [] kernel_thread_helper+0x4/0x10
[ 479.797085] [] ? retint_restore_args+0x13/0x13
[ 479.797092] [] ? __init_kthread_worker+0x70/0x70
[ 479.797098] [] ? gs_change+0x13/0x13
[ 479.797104] 3 locks held by kworker/2:2/360:
[ 479.797107] #0: (events_nrt){.+.+.+}, at: []
process_one_work+0x12e/0x520
[ 479.797125] #1:
((&(&dev->mode_config.output_poll_work)->work)){+.+.+.}, at:
[] process_one_work+0x12e/0x520
[ 479.797140] #2: (&dev->mode_config.mutex){+.+.+.}, at:
[] output_poll_execute+0x51/0x1a0 [drm_kms_helper]
[ 479.797185] INFO: task Xorg:1759 blocked for more than 120 seconds.
[ 479.797189] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 479.797192] XorgD 0 1759 1716 0x0044
[ 479.797201] 880211091898 0046 880211999040
880211091fd8
[ 479.797211] 880211091fd8 880211091fd8 8801dd9ea080
880211999040
[ 479.797219] 880211999708 880211999040 0007
0006
[ 479.797228] Call Trace:
[ 479.797235] [] ? mark_held_locks+0x61/0x140
[ 479.797243] [] ? _raw_spin_unlock_irqrestore+0x3a/0x70
[ 479.797249] [] ? trace_hardirqs_on_caller+0x10d/0x1a0
[ 479.797256] [] ? trace_hardirqs_on+0xd/0x10
[ 479.797265] [] schedule+0x24/0x70
[ 479.797299] []
intel_crtc_wait_for_pending_flips+0x6d/0xc0 [i915]
[ 479.797307] [] ? __init_waitqueue_head+0x60/0x60
[ 479.797337] [] ironlake_crtc_disable+0x4d/0x7a0 [i915]
[ 479.797363] [] ironlake_crtc_prepare+0x9/0x10 [i915]
[ 479.797379] []
drm_crtc_helper_set_mode+0x35e/0x520 [drm_kms_helper]
[ 479.797403] []
drm_crtc_helper_set_config+0x83d/0xaf0 [drm_kms_helper]
[ 479.797440] [] drm_mode_setcrtc+0x2ed/0x540 [drm]
[ 479.797466] [] drm_ioctl+0x47c/0x540 [drm]
[ 479.797496] [] ? drm_mode_setplane+0x3b0/0x3b0 [drm]
[ 479.797504] [] ? trace_hardirqs_on_caller+0x10d/0x1a0
[ 479.797515] [] do_vfs_ioctl+0x96/0x560
[ 479.797524] [] ? sysret_check+0x22/0x5d
[ 479.797532] [] sys_ioctl+0x91/0xa0
[ 479.797541] [] system_call_fastpath+0x16/0x1b
[ 479.797546] 1 lock held by Xorg/1759:
[ 479.797549] #0: (&dev->mode_config.mutex){+.+.+.}, at:
[] drm_mode_setcrtc+0x66/0x540 [drm]
dmesg: http://pastebin.com/p48xLmSc
lspci -vvv: http://pastebin.com/86RrRuKK
Xorg.log: http://pastebin.com/AvL7PC4U
Any ideas?
Thanks,
Thilo
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