On Sat, Feb 6, 2010 at 12:02 AM, Ben Wong <bugs.debian.org@wongs.net> wrote:

> Next I tried copying the entire driver/gpu/drm/radeon directory from
> Ubuntu and compiled that kernel module under Debian. *I was surprised
> to find that the bug still manifested using that kernel module as
> well.

Just for completeness, here are the steps I followed to compile
Ubuntu's radeon driver under Debian:

$ sudo aptitude install linux-source-2.6.32 linux-headers-2.6.32-trunk-686
$ sudo aptitude build-dep linux-source-2.6.32
$ sudo mount /dev/sda7 /mnt
$ grep Ubuntu /mnt/etc/issue
$ cp -a /mnt/usr/src/linux-source-2.6.31/drivers/gpu/drm/radeon ubunturadeon
$ cd ubunturadeon/
$ make -C /usr/src/linux-headers-2.6.32-trunk-686/ M=`pwd` modules
$ sudo insmod radeon.ko

--Ben



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On Sat, Feb 6, 2010 at 00:02:14 -0500, Ben Wong wrote:

> Debian/stable (2.6.26): DRI works perfectly.
> Ubuntu/karmic (2.6.31): DRI works perfectly
> Debian/testing (2.6.32): DRI destroys file system
> Debian/testing using karmic's radeon driver: DRI destroys file system
>
Is that all with the same radeon dri driver (from libgl1-mesa-dri)?

Cheers,
Julien



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On Mon, Feb 8, 2010 at 8:10 AM, Ben Wong <bugs.debian.org@wongs.net> wrote:
>> Is that all with the same radeon dri driver (from libgl1-mesa-dri)?
>
> WORKS
>
> *Ubuntu/karmic: DRI works perfectly
> *Linux-2.6.31.14.27
> *libgl1-mesa-dri-7.6.0-1ubuntu4
>

I just want to mention that, despite my results, Julien may be on to
something when suspecting libgl1-mesa-dri. I notice that Ubuntu has a
bug reporting that this problem *does* affect Ubuntu/Karmic for users
with the ATI Radeon Mobility 7500. It is possible that it is just
chance that my Radeon 9200 works perfectly when using Ubuntu/Karmic.

https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/474928

Also note that in that bug report they suggest downgrading
libgl1-mesa-dri as a workaround.

--Ben



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