linux-kernel - Re: [Intel-gfx] [regression in linux-next] i915: broken graphics on laptop

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Date:	Wed, 4 Feb 2015 21:26:27 +0300
From:	Andrey Skvortsov <andrej.skvortzov@...il.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>,
	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: Re: [Intel-gfx] [regression in linux-next] i915: broken graphics on
 laptop

On Tue, Feb 03, 2015 at 08:21:52PM +0000, Chris Wilson wrote:
> On Tue, Feb 03, 2015 at 10:15:47PM +0300, Andrey Skvortsov wrote:
> > Hi,
> > 
> > tested next-20150202. System boots, but graphic output is broken (empty black screen).
> > Booted five times the same kernel, always got the same result. The system works with 3.19-rc7.
> 
> Those two warnings are more or less symptoms of the black screen (well
> the first is just overzealous). More important would be the drm.debug=6
> dmesg from boot along with the gdm.log (or equivalent) aned Xorg.0.log
> as my guess is that X (or the display server) is crashing.

Requested logs with drm.debug=6 are attached. lightdm was running after WARN_ON, but I couldn't restart it.
The command hanged.

As I booted next-20150202 system crashed several times with a lot of drm_ calls in the backtrace, but I couldn't catch kernel logs,
because I have not serial port on the laptop.

If you need to get other information or to test patches, I would be glad to help.

-- 
Best regards,
Andrey Skvortsov

PGP Key ID: 0x57A3AEAD

View attachment "dmesg.log" of type "text/plain" (181977 bytes)

View attachment "lightdm.log" of type "text/plain" (2032 bytes)

View attachment "Xorg.0.log" of type "text/plain" (7092 bytes)