On 20.06.2016 18:53, Mads wrote: > 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? Unfortunately there seems to be a line in your dmesg that the Mesa-internal parser didn't understand - that's what the Assertion message is about, and it's why you don't see any dump files. I've updated the branch at https://cgit.freedesktop.org/~nh/mesa/log/?h=debug-dma with a patch to work around this. Please retry with that one. Also, please make sure that your X server really uses the manually built version of radeonsi_dri.so and has R600_DEBUG=check_vm set. That assertion should have taken down your X server before you even had a chance to start dolphin. In the end, there should be a dump file created by the X server. Thanks, Nicolai > > - Mads
