Aug 10, 2013 - 04:31am
Hi guys, I've been using the graphics stack since Q4 2012 - Currently I'm using the latest in conjunction with Ubuntu 13.04 on the 3.8 Kernel. My system is a HTPC, utilising the SNB i3 integrated graphics. I've had a persistant problem using this in combination with XBMC, where the display will randomly freeze while watching video (of any codec I've tried - h264, mpeg2) with a GPU hang being reported in dmesg. This only occurs when using the GPU hardware acceleration.
This happens most commonly when watching Live TV via the TBS 6280 tuner card I have, although as mentioned it happens when watching other media too. The reason I've not reported this before is that the system used to totally lock - the gpu hang would be reported over and over until the system was restarted. This is what would be seen:
Now with the latest stack, it is possible to kill xbmc from the command line and following a restart it works fine. When xbmc is killed, dmesg now displays the following extra information:
I tried following the instructions here: https://01.org/linuxgraphics/documentation/intel-gpu-dump-tool-guide on obtaining more detailed information, but it appears that the file specified is empty. Any help would be appreciated as it would be great to have the system working completely smoothly.
Thanks for taking the time to investigate this-- the data will be very helpful moving forward. This looks like a bug, so I would encourage you to file one with the kernel graphics development community. Should you do so-- and I hope you do-- reference this thread and CC vivijim and I.