linux-kernel - Re: [REGRESSION] i915: No HDMI output with 4.4

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Message-ID: <20160211092639.GX23290@intel.com>
Date:	Thu, 11 Feb 2016 11:26:39 +0200
From:	Ville Syrjälä <ville.syrjala@...ux.intel.com>
To:	Oleksandr Natalenko <oleksandr@...alenko.name>
Cc:	Daniel Vetter <daniel.vetter@...el.com>,
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...ll.ch>
Subject: Re: [REGRESSION] i915: No HDMI output with 4.4

On Thu, Feb 11, 2016 at 10:54:08AM +0200, Oleksandr Natalenko wrote:
> Daniel,
> 
> I've already tried Ville's patch you've mentioned with no luck.
> 
> Kindly find unpatched v4.5-rc3 dmesg with drm debug enabled here: [1]
> 
> [1] https://gist.github.com/efb44b7c6bc325978b80

That's an IVB. So no wonder my patch doesn't help.

Can you grab another dmesg after disconnecting and reconnecting the
HDMI cable?

> 
> 11.02.2016 10:21, Daniel Vetter wrote:
> > Please boot with drm.debug=0xe and attach the dmesg. Also please test 
> > the
> > patch later on in this thread:
> > 
> > https://lkml.org/lkml/2016/2/9/587
> > 
> > Ville is working on a proper fix for this specific case. But could be 
> > that
> > you're hitting yet another issue.

-- 
Ville Syrjälä
Intel OTC