linux-kernel - Re: 3.15-rc2: i915 regression: only top 20% of screen works in X

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Date:	Wed, 23 Apr 2014 23:09:45 +0200
From:	Daniel Vetter <daniel.vetter@...ll.ch>
To:	Pavel Machek <pavel@....cz>
Cc:	"Nikula, Jani" <jani.nikula@...ux.intel.com>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: 3.15-rc2: i915 regression: only top 20% of screen works in X

On Wed, Apr 23, 2014 at 10:22 PM, Pavel Machek <pavel@....cz> wrote:
> After update to 3.15-rc2, only top 20% of screen works on X.
>
> 00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset
> Integrated Graphics Controller (rev 03)
>
> 00:02.1 Display controller: Intel Corporation 4 Series Chipset
> Integrated Graphics Controller (rev 03)
>            Subsystem: Intel Corporation Device d614
>            Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
>            ParErr- Stepping- SERR- FastB2B- DisINTx-
>            Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast
>            >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>            Latency: 0
>            Region 0: Memory at d0400000 (64-bit, non-prefetchable)
>            [size=1M]
>            Capabilities: <access denied>
>
> This worked before. I believe it worked in 3.14. It definitely works
> in 3.11-rc2.

Screenshot or more detailed description of what "only top 20% of
screen works in X" means?
Anything in dmesg?
bisect result presuming that it reproduces reliably?

Thanks, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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