linux-kernel - Lenovo resume from suspends hangs in i915_gpu

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Date:	Fri, 1 Apr 2011 14:15:11 +0900
From:	Norbert Preining <preining@...ic.at>
To:	dri-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Lenovo resume from suspends hangs in i915_gpu_busy or so

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)

Here the original message.

> I got a new laptop, Lenovo Thinkpad Edge (intel , intel graphic)
> and I am running 2.6.39-rc1 on it (but tried also 2.6.38).
> 
> Suspend to RAM, either by pm-suspend or by echo "mem" >/sys/..
> works, both wiht  running or from a recovery session where nothing
> else is running.
> 
> But wake-up hangs the machine. The video comes back, I see the last
> lines I typed before I suspended, but after that no keypress nor
> anything else (Sysrq) does work, but 4sec-hard-off. No traces in the
> log files.

Full logs etc:
kernel config:
	http://www.logic.at/people/preining/lenovo/config.edge
dmesg output after boot:
	http://www.logic.at/people/preining/lenovo/dmesg.edge
lsmod, lspci, lsusb
	http://www.logic.at/people/preining/lenovo/lsmod.edge
	http://www.logic.at/people/preining/lenovo/lspci.edge
	http://www.logic.at/people/preining/lenovo/lsusb.edge
photo of the hang:
	http://www.logic.at/people/preining/lenovo/i915-hang-after-resume.jpg

Hope that helps, looking forward to any suggestions

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining            preining@...ist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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