Bug reports for beginners.

[Alex Deucher]

On Mon, Jun 5, 2017 at 2:36 PM, Harry Wentland <harry.wentland at amd.com> wrote:
> Hi Luke,
>
> the first things to check would be the saved kern.log and Xorg.0.log from
> before the crash occured. Both should be in /var/log. These logs will keep a
> long record but you should be able to find the bad run as kern.log is
> timestamped and with Xorg.0.log you should be able to scroll back to the
> previous X run.
>
> That might give some indication, either by logging an error or even showing
> a stack trace, but sometimes they don't flush out completely when the system
> crashes.
>
> Some of the other experts on here (Alex, Michel, Christian, etc) might give
> you more ideas should these logs not show anything.

Basically include your xorg log and dmesg output and a description of
the problem you are seeing.  If possible, can you get remote access to
the system (e.g., ssh)?  If you lose your console, you can still get
the logs remotely.  Another option would be to blacklist the driver
(append modprobe.blacklist=radeon,amdgpu to the kernel command line in
grub) and then boot to a non-X runlevel.   Then manually load the
driver (modprobe radeon or modprobe amdgpu) and see if you can get
better logs.

Alex

>
> Harry
>
>
> On 2017-06-02 06:46 PM, Luke Miller wrote:
>>
>> Greetings, thanks for the awesome drivers.
>>
>> I have a recurring problem with one 3D program (UE4editor) crashing my
>> computer during a particular operation.
>>
>> I believe the problem is at the DRM layer.
>>
>> Brief details:
>> Radeon 7850HD
>> It crashes using radeon and amdgpu (on ubuntu 17.04, linux 4.12, padoka
>> ppa).
>> It does not crash using the fglrx driver (on ubuntu 14.04).
>> The entire machine hangs and requires a reset.
>>
>> My question:
>> How can I go about collecting more information to fix/report the problem?
>> Is there a tutorial on which logs to look at? I may even be able to fix it
>> myself if I could get a stack trace.
>>
>> Part of the fun is that it is an older card.
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> amd-gfx mailing list
>> amd-gfx at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>>
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