linux-kernel - Re: i915 regression with 3.3-rc3+git

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Date:	Thu, 23 Feb 2012 08:41:06 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Riccardo Magliocchetti <riccardo.magliocchetti@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Keith Packard <keithp@...thp.com>
Subject: Re: i915 regression with 3.3-rc3+git

On Fri, 17 Feb 2012 21:48:13 +0100
Riccardo Magliocchetti <riccardo.magliocchetti@...il.com> wrote:

> Hello,
> 
> i've upgraded from 3.2.0-rc7 to post 3.3.0-rc3 git 
> 4903062b5485f0e2c286a23b44c9b59d9b017d53, attached you can find dmesg 
> with drm.debug=0xfff
> 
> This started to appear in logs:
> 
> [drm:intel_framebuffer_init] *ERROR* unsupported pixel format
> 
> X is getting a wrong resolution (log attached) and there's a lot of 
> flickering, if i try to play a video the desktop turns black, the other 
> ttys still works fine though.
> 
> Please CC me since i'm not subscribed.
> 
> 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series 
> Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA 
> controller])
> 	Subsystem: Samsung Electronics Co Ltd Device c045
> 	Flags: bus master, fast devsel, latency 0, IRQ 45
> 	Memory at f8000000 (64-bit, non-prefetchable) [size=4M]
> 	Memory at d0000000 (64-bit, prefetchable) [size=256M]
> 	I/O ports at 1800 [size=8]
> 	Expansion ROM at <unassigned> [disabled]
> 	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
> 	Capabilities: [d0] Power Management version 3
> 	Kernel driver in use: i915
> 
> 00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset 
> Integrated Graphics Controller (rev 07)
> 	Subsystem: Samsung Electronics Co Ltd Device c045
> 	Flags: bus master, fast devsel, latency 0
> 	Memory at f8400000 (64-bit, non-prefetchable) [size=1M]
> 	Capabilities: [d0] Power Management version 3
> 
> Thanks
> 

Can you check the drm-intel-fixes branch at
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-intel.git?
It has a fix for laod detection that might help.

-- 
Jesse Barnes, Intel Open Source Technology Center

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