A recent update of Tumbleweed updated the X server to ABI version 25.2; however, the nvidia X server does not support this version. You will get the following message in /var/log/Xorg.0.log: [ 26.317] ================ WARNING WARNING WARNING WARNING ================ [ 26.317] This server has a video driver ABI version of 25.2 that this driver does not officially support. Please check http://www.nvidia.com/ for driver updates or downgrade to an X server with a supported driver ABI. [ 26.317] ================================================================= [ 26.317] (EE) NVIDIA: Use the -ignoreABI option to override this check. It took a few trials to get the correct search parameters, but eventually I found https://bbs.archlinux.org/viewtopic.php?pid=2002365#p2002365, which gave the fix as: create file /etc/X11/xorg.conf.d/30-nvidia.conf with the contents Section "ServerFlags" Option "IgnoreABI" "true" EndSection I have not done extensive testing; however, I now have X again. Larry