On 07/05/2010 07:34 PM, Xiaotian Feng wrote:
On Tue, Jul 6, 2010 at 2:18 AM, Justin P. Mattock
<[email protected]>  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 <[email protected]>

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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