[amd-gfx] AMD Carrizo - GPU fault detected: 146 0x0842b714

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On 2016-06-20 18:00, Nicolai Hähnle wrote:

> Okay, so clearly the "main" X server behaves differently from the 
> nested one. That would have been too easy :)
> 
> Could you please try with Mesa from 
> https://cgit.freedesktop.org/~nh/mesa/log/?h=debug-dma (at least the 
> top three commits) and running the X server with the 
> R600_DEBUG=check_vm variable set?
> 
> That should kill the X server on the first VM fault and result in a 
> file $HOME/ddebug_dump/X_$pid_00000000 that contains the last submitted 
> DMA commands, that should help to figure out what's going on.
> 

Nice! Applied those three patches to mesa master and rebuilt.

> $ XAUTHORITY=.Xauthority DISPLAY=:0 LIBGL_DEBUG=verbose dolphin
> libGL: pci id for fd 9: 1002:9874, driver radeonsi
> libGL: OpenDriver: trying /usr/lib64/dri/tls/radeonsi_dri.so
> libGL: OpenDriver: trying /usr/lib64/dri/radeonsi_dri.so
> dolphin: 
> /var/tmp/portage/media-libs/mesa-9999/work/mesa-9999/src/gallium/drivers/radeonsi/si_debug.c:733: 
> si_vm_fault_occured: Assertion `0' failed.
> KCrash: Application 'dolphin' crashing...
> KCrash: Attempting to start /usr/lib64/libexec/drkonqi from kdeinit
> sock_file=/run/user/1000/kdeinit5__0
> Killed

I also have that R600_DEBUG=check_vm. But, I can't seem to find that 
debug_dump-file anywhere... do I have to create a folder first, or run X 
in a special way?

- Mads


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