I use Ubuntu 22.04 and I have no access to any system settings through my graphical user interface, include display settings, power settings, periphery devices, etc. How can I address this issue.
One way of solving this problem might be a system upgrade to Ubuntu 22.10, but in fact I would like to prefer to stay with the LTS version. I would probably be able to access certain settings through the terminal, but this seems rather impractical. Maybe a simple command or a few lines in the terminal will fix the problem, but I have no clue how to do this.