Re: Lenovo resume from suspends hangs in i915_gpu_busy or so

[Jesse Barnes]

On Fri, 1 Apr 2011 14:15:11 +0900
Norbert Preining <preining@xxxxxxxx> wrote:

> Hi all,
> 
> adding dri-devel as I found it is actually not completely dead, 
> but hanging in some i915 problem.
> 
> Copyied from screen:
> Process ips-adjust (....
> Stack:
>   ....
>    ....
>   ...
> Call Trace:
>   <IRQ>
>   ... ? tick_program_event
>   call_sortirq
>   do_softirq
>   irq_exit
>   smp_apic_timer_interrupt
>   apic_timer_interrupt
>   <EOI>
>   ? _raw_spin_lock
>   i915_gpu_busy
>   ips_adjust
>   ? show_cpu_temp
>   kthread
>   kernel_thread_helper
>   ? kthread_worker_fn
>   ? gs_change
> Code: ...
> (once more more or less the same as above)

Hm, ok so on resume we're checking GPU busyness, which is normal, but
end up hanging on the spinlock?  Do you see what scrolls by above the
text you took a picture of (probably a "task hung" message?).

Does this happen reliably?  Does a previous kernel work ok?

-- 
Jesse Barnes, Intel Open Source Technology Center
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/