I've been trying to mount proc for the MATE desktop environment in the latest release of FreeBSD. I've edited the /etc/fstab using vim (vi /etc/fstab) and mounted proc like it says in the guide but after doing so when starting lightdm, a warning message is displayed and the screen almost instantly goes blank. Does the proc line have to mounted in a specific way? I've mounted at the bottom of /dev/ada0p3?