Hi,
since kernel 3.18 I'm no longer able to run X on my machine. While
3.17.6 is fine, 3.18 leaves me with a black screen when starting
X. Booting into runlevel 1/3 is fine.
I did a "git bisect", and the offending commit is this one:
[root@kiera linux-git]# git bisect bad
83f45fc360c8e16a330474860ebda872d1384c8c is the first bad commit
commit 83f45fc360c8e16a330474860ebda872d1384c8c
Author: Daniel Vetter <[email protected]>
Date: Wed Aug 6 09:10:18 2014 +0200
drm: Don't grab an fb reference for the idr
[....]
I double-checked, and 3.18 is fine with this commit reverted.
My machine is an Asus U45JC laptop, and the CPU is an Intel i450M
(Ironlake). Please contact me if I can help in any way (I'm subscribed
to lkml, but not to other X or kernel related lists).
Thanks,
Heinz.
On Sun, Dec 14, 2014 at 12:58:31PM +0100, Heinz Diehl wrote:
> Hi,
>
> since kernel 3.18 I'm no longer able to run X on my machine. While
> 3.17.6 is fine, 3.18 leaves me with a black screen when starting
> X. Booting into runlevel 1/3 is fine.
>
> I did a "git bisect", and the offending commit is this one:
>
> [root@kiera linux-git]# git bisect bad
> 83f45fc360c8e16a330474860ebda872d1384c8c is the first bad commit
> commit 83f45fc360c8e16a330474860ebda872d1384c8c
> Author: Daniel Vetter <[email protected]>
> Date: Wed Aug 6 09:10:18 2014 +0200
>
> drm: Don't grab an fb reference for the idr
>
> [....]
>
> I double-checked, and 3.18 is fine with this commit reverted.
>
> My machine is an Asus U45JC laptop, and the CPU is an Intel i450M
> (Ironlake). Please contact me if I can help in any way (I'm subscribed
> to lkml, but not to other X or kernel related lists).
Can you please boot with drm.debug=0xf on both good and bad kernels and
then grab dmesg from each?
To make sure we don't forget this please file the above summary plus dmesg
files as a new bug against dri -> drm(intel) on bugs.freedesktop.org.
Please add "[ilk bisected]" to the bug summary so it shows up in all the
right searches for us.
Thanks, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
On 15.12.2014, Daniel Vetter wrote:
> Can you please boot with drm.debug=0xf on both good and bad kernels and
> then grab dmesg from each?
The output is attached. The dmesg log stops after runlevel 3 for the
3.18 kernel, because I'm not able to do anything in runlevel 5 with a
black screen.
> To make sure we don't forget this please file the above summary plus dmesg
> files as a new bug against dri -> drm(intel) on bugs.freedesktop.org.
> Please add "[ilk bisected]" to the bug summary so it shows up in all the
> right searches for us.
Will do.