Just login after boot and get a failure message.
ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-core 2:1.17.3-2ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
Uname: Linux 4.4.0-2-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.19.4-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Fri Feb 5 10:49:15 2016
ExecutablePath: /usr/lib/xorg/Xorg
InstallationDate: Installed on 2016-01-22 (14 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160121)
ProcCmdline: /usr/lib/xorg/Xorg -core :1 -seat seat0 -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch
ProcEnviron:
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
?? () from /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so
?? () from /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so
?? () from /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so
?? () from /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so
RRCrtcDetachScanoutPixmap ()
Title: Xorg crashed with SIGABRT in RRCrtcDetachScanoutPixmap()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
Status changed to 'Confirmed' because the bug affects multiple users.