I think I'm having the same issue. I'm using xorg-edgers, but that still shouldn't crash the kernel DRM I guess.
** Attachment added: "kern.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1443630/+attachment/4384498/+files/kern.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1443630 Title: kernel BUG at /build/buildd/linux-3.19.0/drivers/gpu/drm/drm_crtc.c:537! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1443630/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs