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Hi folks,
according to http://bugs.debian.org/607300 I have to rebuild 2.6.36.2
with CONFIG_DRM_I915_KMS=y. Problem:
At boot time I get a message "waiting for /dev to be fully populated",
then the screen goes blank and the monitor enters power save mode.
2.6.36.2 without CONFIG_DRM_I915_KMS didn't show this problem.
My grub2 configuration says
GRUB_GFXMODE=1280x1024
GRUB_GFXPAYLOAD_LINUX="keep"
If I comment out these 2 lines and rebuild grub.cfg, then the problem
goes away, too. I just get a 80x25 display for grub in this case.
Please mail if I can help to track this down. I would be glad to
help.
Regards
Harri
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(cc'ing Chris).
On Fri, Dec 17, 2010 at 8:23 AM, Harald Dunkel <[email protected]> wrote:
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>
> Hi folks,
>
> according to http://bugs.debian.org/607300 I have to rebuild 2.6.36.2
> with CONFIG_DRM_I915_KMS=y. Problem:
>
> At boot time I get a message "waiting for /dev to be fully populated",
> then the screen goes blank and the monitor enters power save mode.
> 2.6.36.2 without CONFIG_DRM_I915_KMS didn't show this problem.
>
> My grub2 configuration says
>
> ? ? ? ?GRUB_GFXMODE=1280x1024
> ? ? ? ?GRUB_GFXPAYLOAD_LINUX="keep"
>
> If I comment out these 2 lines and rebuild grub.cfg, then the problem
> goes away, too. I just get a 80x25 display for grub in this case.
>
Is this a regression since 2.6.36 or 2.6.35?
Dave.
On Fri, 17 Dec 2010 10:01:26 +1000, Dave Airlie <[email protected]> wrote:
> (cc'ing Chris).
>
> On Fri, Dec 17, 2010 at 8:23 AM, Harald Dunkel <[email protected]> wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > Hi folks,
> >
> > according to http://bugs.debian.org/607300 I have to rebuild 2.6.36.2
> > with CONFIG_DRM_I915_KMS=y. Problem:
> >
> > At boot time I get a message "waiting for /dev to be fully populated",
> > then the screen goes blank and the monitor enters power save mode.
> > 2.6.36.2 without CONFIG_DRM_I915_KMS didn't show this problem.
> >
> > My grub2 configuration says
> >
> > GRUB_GFXMODE=1280x1024
> > GRUB_GFXPAYLOAD_LINUX="keep"
> >
> > If I comment out these 2 lines and rebuild grub.cfg, then the problem
> > goes away, too. I just get a 80x25 display for grub in this case.
> >
>
> Is this a regression since 2.6.36 or 2.6.35?
Sounds like:
commit 47f1c6c9ffdec0c0e5a2c2709bd63c7380b325c4
Author: Chris Wilson <[email protected]>
Date: Fri Dec 3 15:37:31 2010 +0000
drm/i915: Clean conflicting modesetting registers upon init
If we leave the registers in a conflicting state then when we attempt
to teardown the active mode, we will not disable the pipes and planes
in the correct order -- leaving a plane reading from a disabled pipe and
possibly leading to undefined behaviour.
Reported-and-tested-by: Andy Whitcroft <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32078
Signed-off-by: Chris Wilson <[email protected]>
Cc: [email protected]
which was prompted by an investigation as to why grub2 was causing a
modesetting failure.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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On 12/17/10 02:15, Chris Wilson wrote:
>
> Sounds like:
>
> commit 47f1c6c9ffdec0c0e5a2c2709bd63c7380b325c4
I tried 2.6.37-rc6 (which includes this patch): The problem is gone.
Many thanx
Harri
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Hi folks,
On 12/18/10 13:53, Harald Dunkel wrote:
> On 12/17/10 02:15, Chris Wilson wrote:
>
>> Sounds like:
>
>> commit 47f1c6c9ffdec0c0e5a2c2709bd63c7380b325c4
>
> I tried 2.6.37-rc6 (which includes this patch): The problem is gone.
>
Sorry to say, but that was a mistake. By accident CONFIG_DRM_I915_KMS
was _not_ set. I just noticed when I tried rc7.
rc7 built with CONFIG_DRM_I915_KMS=yes still boots into a blank screen.
My apologies for the bad confirmation message. Please mail if I can
help.
Regards
Harri
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