Unfortunately this bug seems to be still with us.
Fresh install of Karmic on a Lenovo T61, everything up to date. Get the dreaded
INFO: task i915/0:365 blocked for more than 120 seconds.
message. It seems random, but on reflection I think it happens when I hit a
key or move the mouse after the machine has powered down the display because of
no mouse/keyboard activity. The call trace looks like this:
__mutex_lock_slowpath+0xc6/0x130
mutex_lock+0x20/0x40
i915_gem_retire_work_handler+0x2a/0x70 [i915]
run_workqueue+0x6e/0x140
? i915_gem_retire_work_handler+0x0/0x70 [i915]
worker_thread+0x88/0xe0
? autoremove_wake_function+0x0/0x40
? worker_thread+0x0/0xe0
kthread+0x7c/0x90
? kthread+0x0/0x90
kernel_thread_helper+0x7/0x10
which I have seen in other bug reports. The display is frozen,
<ctrl><alt><f2> doesn't do anything. I didn't check keyboard lights,
but it was possible to log in remotely. System log also shows my KVM
interacting with the USB adapter.
--
[i865g][Karmic Alpha 3] X corruption and freeze when clicking "Other" on GDM
login screen
https://bugs.launchpad.net/bugs/407793
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