[Bug 80203] [HSW] trying to runtime suspend with power well enabled on 3.15

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80203

--- Comment #6 from Imre Deak <imre.deak at gmail.com> ---
(In reply to comment #4)
> I've since upgraded to 3.16.0 and turned on drm.debug and I think I have the
> same problem but the stack differs.
> 
> I intend to upgrade to the latest 3.17 RC next time I reboot.
> 
> I've concatenated /var/log/dmesg and dmesg. Let me know if you want the
> missing pieces from kern.log.

Thanks. One possibility is that it's the locking issue fixed by:

commit e39b999a6f229386ea6c58cb1c10ce9dc912869b
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Thu Sep 4 14:53:14 2014 +0300

    drm/i915: Fix edp vdd locking

It would need backporting to 3.17-rc, so could you also try the
git://anongit.freedesktop.org/drm-intel drm-intel-nightly branch which includes
the above fix?

If you can reproduce the problem with that too, could you attach the dmesg log
starting from boot? You can increase the log buf size with the log_buf_len
kernel parameter. I would need it at least until the first
intel_display_power_get/put() warning shows up.

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