I finally (partially) figured out an issue that has been driving my absolutely insane and causing me to leave cryptic help requests all over the internet (including here). For reasons unknown to me this fstab entry auto-mounts at boot (as expected) but without providing exec ability despite having the exec option set and individual files having ...
also, I just did what I usually do and rebooted after the black screen and it did show login, but this time for some reason I can move the mouse but everything is frozen