linux-kernel - Re: [4.6-rcX regression] closing and opening LID on thinkpad x200s freezes X

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Date:	Thu, 7 Apr 2016 13:53:10 +0200 (CEST)
From:	Jiri Kosina <jikos@...nel.org>
To:	Bjørn Mork <bjorn@...k.no>
cc:	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [4.6-rcX regression] closing and opening LID on thinkpad x200s
 freezes X

On Thu, 7 Apr 2016, Bjørn Mork wrote:

> > after updating to 4.6-rcX (where X is 1 or 2, doesn't really matter) on 
> > thinkpad x200s notebook with
> >
> > 	00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
> >
> > closing and opening the lid freezes the computer completely (after opening 
> > the LID, I can see either the complete original contents of the screen, or 
> > silouhette of xscreensaver window decorations, but the machine is dead by 
> > then (neither ctrl-alt-backspace-backspace nor switching to text console 
> > doesn't work).
> >
> > It definitely worked with older kernels, but I unfortunately don't have 
> > all the data needed for bisection, as the old kernels have been wiped off 
> > the machine in the meantime.
> >
> > Is this a known issue?
> 
> Yup.  Fix is queued: https://lkml.org/lkml/2016/3/30/151

Excellent. FWIW

	Tested-by: Jiri Kosina <jkosina@...e.cz>

> Good to see that I'm not the only one running rc's on ancient laptops :)

Indeed many i915 Gen4 bugs have been discovered on this particular 
notebook. I like it, there is no way I am getting rid of it :)

Thanks,

-- 
Jiri Kosina
SUSE Labs