ubuntu-x-swat team mailing list archive

["Daniel Richard G." <skunk@xxxxxxxxxx>]

I've encountered the same failure mode here. The keyboard responds only
to Alt-SysRq-* keystrokes. This is with an up-to-date Karmic, running on
a Dell Optiplex GX260.

Here is the relevant extract from /var/log/syslog, with each line's
datestamp/host prefix elided:

INFO: task i915/0:258 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
i915/0        D c08145c0     0   258      2 0x00000000
 f6b0bf04 00000046 f6720000 c08145c0 f69c9bb8 c08145c0 31ebb26c 00002c0f
 c08145c0 c08145c0 f69c9bb8 c08145c0 31ebaa58 00002c0f c08145c0 f652a600
 f69c9920 f6871814 f6871818 ffffffff f6b0bf30 c056f776 c0748e80 f687181c
Call Trace:
 [<c056f776>] __mutex_lock_slowpath+0xc6/0x130
 [<c056f690>] mutex_lock+0x20/0x40
 [<f82b8c0a>] i915_gem_retire_work_handler+0x2a/0x70 [i915]
 [<c0157a7e>] run_workqueue+0x6e/0x140
 [<f82b8be0>] ? i915_gem_retire_work_handler+0x0/0x70 [i915]
 [<c0157bd8>] worker_thread+0x88/0xe0
 [<c015c280>] ? autoremove_wake_function+0x0/0x40
 [<c0157b50>] ? worker_thread+0x0/0xe0
 [<c015bf8c>] kthread+0x7c/0x90
 [<c015bf10>] ? kthread+0x0/0x90
 [<c0104007>] kernel_thread_helper+0x7/0x10

-- 
system locks up at random intervals, except mouse
https://bugs.launchpad.net/bugs/469820
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