ubuntu-x-swat team mailing list archive

[Stefano Rivera <launchpad@xxxxxxxxxxxxx>]

As of this morning's updates. Starting X results in a GPU hang.
Xorg spends 100% of CPU time in kernel mode, and the kernel starts complaining:

[  360.480027] INFO: task i915/0:293 blocked for more than 120 seconds.
[  360.480032] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  360.480034] i915/0        D 00000000ffffffff     0   293      2 0x00000000
[  360.480039]  ffff880097d6dd40 0000000000000046 0000000000015ac0 0000000000015ac0
[  360.480044]  ffff8800981a1ab0 ffff880097d6dfd8 0000000000015ac0 ffff8800981a16f0
[  360.480048]  0000000000015ac0 ffff880097d6dfd8 0000000000015ac0 ffff8800981a1ab0
[  360.480052] Call Trace:
[  360.480063]  [<ffffffff81575d17>] __mutex_lock_slowpath+0xe7/0x170
[  360.480070]  [<ffffffff81055200>] ? finish_task_switch+0x50/0xd0
[  360.480073]  [<ffffffff81575c0b>] mutex_lock+0x2b/0x50
[  360.480111]  [<ffffffffa00c691d>] i915_gem_retire_work_handler+0x3d/0xa0 [i915]
[  360.480120]  [<ffffffffa00c68e0>] ? i915_gem_retire_work_handler+0x0/0xa0 [i915]
[  360.480126]  [<ffffffff8107ead7>] run_workqueue+0xc7/0x1a0
[  360.480129]  [<ffffffff8107ec53>] worker_thread+0xa3/0x110
[  360.480133]  [<ffffffff81083680>] ? autoremove_wake_function+0x0/0x40
[  360.480136]  [<ffffffff8107ebb0>] ? worker_thread+0x0/0x110
[  360.480139]  [<ffffffff81083306>] kthread+0x96/0xa0
[  360.480143]  [<ffffffff810141ea>] child_rip+0xa/0x20
[  360.480146]  [<ffffffff81083270>] ? kthread+0x0/0xa0
[  360.480149]  [<ffffffff810141e0>] ? child_rip+0x0/0x20

-- 
[i945gm] [lucid] LCD "flashes" and jumps horizontally quite a lot
https://bugs.launchpad.net/bugs/506444
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