Your driver is telling Compiz the refresh rate is 50Hz because it abuses this value to manage display hotplugging because they refuse to just use xrandr.
** Package changed: compiz (Ubuntu) => nvidia-graphics-drivers-180 (Ubuntu) -- Compiz refresh rate setting is not auto-configured correctly https://bugs.launchpad.net/bugs/635908 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