[Bug 38675] New: Recompiled kernel crash on KMS loading

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=38675

           Summary: Recompiled kernel crash on KMS loading
           Product: DRI
           Version: unspecified
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: muziofg at email.it


Created an attachment (id=48405)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=48405)
archive containing .config and dmesg output of my custom kernel

With my custom kernel (config and dmesg attached at this message in a tar.gz
archive) I have a problem with radeon DRM module. 

When the KMS is loading the system is freezed, the keyboard is dead, the
machine doesn't answer at the ping and I can only reset the machine.
I haven't any debug information because this crash show a black screen 
and no file (dmesg, kern.log, messages, ecc) are written.

This problem doesn't happen always, but often so it is also difficult to
determine when a change in the configuration in the kernel may have solved the
problem

I actually use a linux kernel version 2.6.39 on a debian testing. I compile a
personalized kernel from the sources packaged by debian.

The problem seems don't happen with the prebuild kernel (I have tried the
package  linux-image-2.6.39-2-686-pae) but I'm not sure, simply for now, with
this, the machine was started without problem

I never had problems with kernel 2.6.38 using a very similar .config file

The radeon card is a HD6670 PCI Express (chip TURKS)

See here http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631567 for other
details

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