Intel GM45 GPU hangs, PC-BSD 11.0-CURRENT, sysctl hw.dri.0.info.i915_error_state

[Graham Perrin]

Following <https://forums.pcbsd.org/thread-20235-post-112478.html#pid112478> I had a chat in IRC, there was the suggestion to address this problem to the freebsd-x11 list. A highlight: 

> Within minutes of beginning to use PC-BSD 11.0-CURRENTDEC2015 I found it very easy to hang the GPU. Two hangs with Lumina, one with Fluxbox, one with KDE. In each case:
> 
> * the hang occurred when I tried to use HexChat …

Re <https://forums.pcbsd.org/attachment.php?aid=395> I saved the output from 

sysctl hw.dri.0.info.i915_error_state

Should I post that file, the saved state, to this list? 

Please advise – thanks