[ShadowAce]

[Pollard]

Try logging out. Not shutting down, just log out. You should be given a choice of accounts to log back into.

[Paladin2]

How to Create Persistent USB with Ubuntu, Linux Mint - DebugPoint ...

Oct 6, 2019 ...

https://www.debugpoint.com/2019/10/how-to-create-persistent-usb-ubuntu-linux-mint/

[TomGuy]

CTRL+ALT+Delete should give you a pop-up with Switch User/Cancel/Log Out.

Try the first or third button.

[Gene Eric]

>> It has some how put me in guest mode.

Can you not set the run level at boot?

[Still Thinking]

So I guess I don’t need to ask if you’re logged in?

[rockrr]

You might want to review this page: https://www.technipages.com/linux-mint-allow-guest-sessions

[martin_fierro]

[krogers58]

and he could be a guest user attempting to exceed his login priviledges

[BiglyCommentary]

Rule #1 - You are almost certainty not to be the first human on planet earth to have had this problem.

Rule #2 - See Rule #1

If you are following Rule #1 - then you should know that search is your friend. Search for “linux mint guest mode”.

[Openurmind]

Did you get this figured out? Did you try pulling up your Grub menu at power up and use the advanced recovery options to repair broken packages and repair the Grub/boot?

Sometimes this restores small issues like this back to default state.