linux-kernel - Re: [Intel-gfx] [3.14.0-rc4] regression: drm FIFO underruns

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Message-ID: <20140509161438.GH31479@strange.amr.corp.intel.com>
Date:	Fri, 9 May 2014 17:14:38 +0100
From:	Damien Lespiau <damien.lespiau@...el.com>
To:	Jörg Otte <jrg.otte@...il.com>
Cc:	Daniel Vetter <daniel.vetter@...ll.ch>,
	David Airlie <airlied@...ux.ie>,
	Dave Airlie <airlied@...hat.com>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [Intel-gfx] [3.14.0-rc4] regression: drm FIFO underruns

On Fri, May 09, 2014 at 06:11:37PM +0200, Jörg Otte wrote:
> > Jörg, can you please boot with drm.debug=0xe, reproduce the issue and
> > then attach the complete dmesg? Please make sure that the dmesg
> > contains the boot-up stuff too.
> >
> > Thanks, Daniel
> Here it is. I should mention it only happens at boot-up.

[    0.374095] [drm] Wrong MCH_SSKPD value: 0x20100406
[    0.374096] [drm] This can cause pipe underruns and display issues.
[    0.374097] [drm] Please upgrade your BIOS to fix this.

-- 
Damien
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