From: Massimo Maggi <massimo@mmmm.it>
To: Chris Wilson <Xchris@chris-wilson.co.uk>,
intel-gfx@lists.freedesktop.org
Subject: Re: KMS broken from 2.6.33 up to 2.6.35-rc5????
Date: Sun, 18 Jul 2010 16:42:28 +0200 [thread overview]
Message-ID: <4C4312D4.4050105@mmmm.it> (raw)
In-Reply-To: <8u3s94$fvmkvd@orsmga002.jf.intel.com>
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After 14 builds (never tought that PXE and Core2Quad were so
useful!!).... the bad commit is:
01c66889c14aa163c49355b3be2ccfb214500599 is the first bad commit
commit 01c66889c14aa163c49355b3be2ccfb214500599
Author: Zhao Yakui <yakui.zhao@intel.com>
Date: Wed Oct 28 05:10:00 2009 +0000
drm/i915: Add ACPI OpRegion support for Ironlake
Add the support of ACPI opregion on Ironlake so that the backlight
brightness can be adjusted by using ACPI interface
>/sys/class/backlight/acpi_video0/brightness
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Zhao Yakui <yakui.zhao@intel.com>
[zhenyuw: cleanups, fix typo for checking GSE irq and convert to
current irq handling logic.]
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
:040000 040000 79f96cd37f779fb2b33f0e6545e83f32cd5c1372
3b9f77adfeed13386058a46a17e3f4facd8d862c M drivers
The problem is *half*-solved...
connecting by ssh (as root) and typing
# echo -n 10 >/sys/class/backlight/acpi_video0/brightness
revives the screen.
Starting X gives me a fully working KWin compositing (with OpenGL)
I will temporarily put this line in an init script, but I think that
this bug must be solved as soon as possible!
Another question:
How can I be sure that the ATI gpu isn't wasting power while PC is
booted in Linux?
Best regards,
Massimo Maggi
massimo@mmmm.it
Il 18/07/2010 14:57, Chris Wilson ha scritto:
> On Sun, 18 Jul 2010 14:29:34 +0200, Massimo Maggi <massimo@mmmm.it> wrote:
>> I've set up a very minimal kernel config (the resulting kernel is not
>> useful for anything except showing the problem), and built versions:
>> 2.6.32.16
>> 2.6.33.6
>> 2.6.34.1
>> 2.6.35-rc5
>> Only 2.6.32.16 is able to correctly initialize the framebuffer.
> Excellent, as you have managed to reproduce this with a minimal kernel,
> can you do a bisect between 2.6.33.16 and 2.6.33.6 and see which patch
> causes the regression? It should only take a couple of hours. My bet is
> one of the Arrandale enabling patches...
>
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next prev parent reply other threads:[~2010-07-18 14:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-18 12:29 KMS broken from 2.6.33 up to 2.6.35-rc5???? Massimo Maggi
2010-07-18 12:57 ` Chris Wilson
2010-07-18 14:42 ` Massimo Maggi [this message]
2010-07-19 0:45 ` Massimo Maggi
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