I have an external NTFS mounted drive that automounts fine when I am logged on and the screen is not locked. However, if the drive attempts to mount when the screen is locked it silently fails until the screen is unlocked, at which point an "Authentication" dialog is present saying "Authentication is required to mount WD... (/dev/sdc1)". Occasionally this happens while the drive is in use as it will inexplicably unmount and then try to remount and fail, causing stuff trying to use the drive to fail as well.
My mount options in fstab are:
nosuid,nodev,nofail,permissions,auto,user,users,x-gvfs-show
What am I missing to allow the drive to automatically mount even if the screen is locked?