I am getting this problem as well. I had two computers one of which was working after the recent set of updates in stretch and the other was crashing. I decided to check on differences in the installations and on the computer that was working I had all the xserver video packages installed and on the other I only had the package for the (Intel) graphics card in use. I deleted the extra packages from the working computer and it now crashes. I reinstalled all the deleted packages and it still crashes. The one thing I could not reinstall were the modesetting configuration files which I had purged.
I would provide a gdb trace but I am hitting some problems. I am using lightdm and xfce so the instructions for getting a core file at http://x.debian.net/howto/use-gdb.html do not help. What should I set on my system? Also I do not have a file /etc/X11/core for # gdb -c /etc/X11/core /usr/bin/Xorg. And when I try Starting X from gdb I get a blank screen and an unresponsive system John -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org