Michel, Maarten, seems like issue that I reported originally is not same issue
that polo reporting. For me DRI3 usage cause kernel module crash, for him using
DRI3 instead of DRI2 is kind of workaround. 
What you think?

> Could you check the output with this patch? 
Honestly, I doesn't know how to test it, as I am not developer. But I can test
rc-kernels that available in Ubuntu mainline PPA.