Software Manager only worked once

[beleraform]

New to Linux (Mint)
I was only able to install one program (Spotify) with Software Manager after I made a new account. (I read somewhere to make sure it was part of the sudo group)
I was not able to install anything from the first account.

The progress bar just goes back and forth, but nothing happens.

Please help.
Thanks.

[Quinton McLeod]

What software are you trying to install?

[beleraform]

Gnome-chess (i think).

I would like to install many others like Scilab, etc ...

[gittiest personITW]

Try going into Terminal and try

Code: Select all

mintinstall

What happens?

[beleraform]

Try going into Terminal and try

Code: Select all

mintinstall

What happens?

MintInstall: Detected system architecture: 'x86_64'
Installer: System pkgcache is most recent, using it.
MintInstall: Deleting old screenshots
MintInstall: No new reviews

[beleraform]

Try going into Terminal and try

Code: Select all

mintinstall

What happens?

Software manager pops up, still does the same thing (doesn't install)

[beleraform]

i tried this:
sudo apt install gnome-chess

got this:
^Citing for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 1639 (packagekitd)... 80s

[gittiest personITW]

Is that the only software you tried to install or have you tried to install a few other things with no luck?
If so, is there an error message?

Does it ask you for root password?

What is your connection to the internet like?
Can you check your Software Sources Mirror in the Update Manager.

[gittiest personITW]

Citing for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 1639 (packagekitd)... 80s

Try here:
https://phoenixnap.com/kb/fix-could-not ... ror-ubuntu

But do a Timeshift snapshot first.
(just in case)