you are already using xinerama/twinview.. the logfile does enable Randr, but the driver apparently can't use it with twinview.
** Package changed: xorg (Ubuntu) => nvidia-graphics-drivers-180 (Ubuntu) ** Changed in: nvidia-graphics-drivers-180 (Ubuntu) Status: New => Invalid -- RANDR extension missing https://bugs.launchpad.net/bugs/397362 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp