I found this old bug report and it looks very similar to what I am seeing. https://bugzilla.redhat.com/show_bug.cgi?id=720605
In the report, in comment #36, it says to add export CLUTTER_PAINT=disable-clipped-redraws:disable-culling to /etc/gdm/Xsession On my Debian jessie computer, I do not see /etc/gdm/Xsession. Any ideas on where I should add the export to try it? Brent -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org