Re: Radeon KMS doesn't work.

[Justin P. Mattock]

On 07/05/2010 07:34 PM, Xiaotian Feng wrote:
> On Tue, Jul 6, 2010 at 2:18 AM, Justin P. Mattock
> <justinmattock@xxxxxxxxx>  wrote:
> > On 07/05/2010 10:27 AM, Marvin wrote:
> > > Hi Wakko,
> > >
> > > as nobody seems to have answered yet, I think it's better that you file a
> > > bug
> > > against the radeon driver (bugs.freedesktop.org, one bug for each defect).
> > > There may be similar bugs already, so please check this also.
> > >
> > > Thanks
> > >
> > > Marvin
> > >
> > > Am Montag 05 Juli 2010, 01:19:26 schrieb Wakko Warner:
> > > > Wakko Warner wrote:
> > > > > I have a Dell Inspiron 5100 with an ATI Radeon Mobility M7 (7500 R100
> > > > > PCI ID 1002:4c57 sub 1028:0149).
> > > > >
> > > > > Immediately when radeon.ko is loaded, the screen goes blank (The
> > > > > backlight stays on).  I have fbcon compiled into the kernel (I also
> > > > > tried as module). I am unable to get the screen to work again until I
> > > > > reboot.  The logs did not appear to have any errors after the module
> > > > > loaded.  The system was still responsive on the network.
> > > > >
> > > > > I tried kernels 2.6.33 and 2.6.34.
> > > > >
> > > > > I can provide kernel output if needed.
> > > >
> > > > I need to add that if I use modeset=0, the screen does not blank.
> > > >
> > > > Also 2.6.34 (with modeset=0) doesn't do 3D very well on this system.
> > > >   Some
> > > > objects look ok, some are garbled, some do not appear at all.  The gears
> > > > from xscreensaver does not show up at all.
> > >
> > > --
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> >
> >
> > I've hit a couple of things with radeon as well.. the first was this:
> > http://lkml.org/lkml/2010/6/6/172
> > (if your hitting this issue, then the patch should work and/or it should
> > already be in the main tree).
> >
> > then a few days ago hit another:
> > https://bugzilla.kernel.org/show_bug.cgi?id=16335
> > (keep in mind still uncertain on a fix for this, reverting the commit gets
> > me up and running(I created a patch, but an umsure if it's a right
> > solution)).
>
> I think this is the same cases with (http://lkml.org/lkml/2010/7/5/44)
> And the fix for this bug is in -tip tree, commit 2463eb8
>
> Could you please try following patch?
> http://git.kernel.org/tip/2463eb8b3093995e09a0d41b3d78ee0cf5fb4249

applied.. o.k. system started without hitting the crash I was 
experiencing!! Thanks for this.. I'll run this and let you know if I 
experience anything out of the ordinary..

> > if none of these are what your hitting, then maybe(if you can) do a bisect
> > on this!
> >
> > Justin P. Mattock
> > --
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Tested-By: Justin P. Mattock <justinmattock@xxxxxxxxx>

I'll send this info over to the bug report so they know..and if things 
go good get this thing closed..

Justin P. Mattock
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