[Intel-gfx] [REGRESSION] i915: No HDMI output with 4.4

Daniel Vetter daniel at ffwll.ch
Thu Feb 11 08:21:05 UTC 2016

On Thu, Feb 11, 2016 at 09:45:17AM +0200, Oleksandr Natalenko wrote:
> Daniel,
> I do confirm that this hacky patch:
> https://lkml.org/lkml/2016/1/19/637
> works around my issue. I understand that this is improper fix, so let me
> know how could I debug my issue further.

Please boot with drm.debug=0xe and attach the dmesg. Also please test the
patch later on in this thread:


Ville is working on a proper fix for this specific case. But could be that
you're hitting yet another issue.

Thanks, Daniel

> Thanks.
> 09.02.2016 12:11, Daniel Vetter wrote:
> >Can you please retest with latest -rc? There's been some bugs in the HDMI
> >detection changes, which should be fixed now.
> >
> >If that doesn't help please try to bisect which exact change caused the
> >regression.
> >
> >Thanks, Daniel

Daniel Vetter
Software Engineer, Intel Corporation

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