https://bugs.freedesktop.org/show_bug.cgi?id=93452
--- Comment #2 from polo lathanderjk@gmail.com --- looks like this bug was backported to 3.18. (I tested 3.18 back in november 2015 works withou any problem but now crash randomly with DRI_PRIME=1 but is same as 4.1-4.5 crash randomly in hours-days of testing , 3.19-4.1 crash always after few minutes(max. 10) even latest 4.1.25