Bug reports for beginners.

[Harry Wentland]

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.

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.
> 
> 
> 
> 
> 
> 
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