Besides that, the biggest hangup right now in Linux has been the need for a Sudo password to install Darktable. Whoever installed Linux for me didn't tell me that password. Neither "password," "admin," or "linux" work. Sooo...
It's been frustrating and I'm really busy.
>Sudo password
Try your own password.
Try leaving it blank sometimes they do that to allow you to come up with your own or it could be Ubuntu.i have sometimes used the. Sudo su command...
"su -" will require the root password.