Porteus

All the edges are close to the edges of the monitor; but a bit on the fish-eye side.
I don't know if it has to do with the driver; but here are the details - I picked AMD's proprietary driver; didn't pick the Catalyst; it said for 500 and higher; mine says 400 and something. Was I right not to install it?
I can fix it with the monitor's buttons; but it shouldn't be this way; and it's probably not going to be the same quality.
And what do you think - maybe Linux's drivers can be better?

Hi, welcome to Porteus.
Could go to Porteus System Info from the menu or "xpsinfo" from terminal and dump a full report. Upload it to pastebin to troubleshoot the problem. Also try it without the proprietary driver.

Hi. Thanks for the welcome.
How do I disable the driver; and will the OS work without it?

I uploaded the file; but I'm not sure what to do now. The file "pastebin" is empty. Here's the message displayed - "Your file was uploaded to (You may select and copy this text) and this address is now in the file /tmp/pastebin-link.txt."

to disable it go to /porteus/modules and move the amd module to somewhere else, like your home folder. Then restart your computer. (normally you can double click a module to activate/deactivate but because it is a video driver it need a restart)
Open /tmp/pastebin-link.txt with a text editor, select all, copy, go to http://www.pastebin.com, paste, click submit and then post the link here.

What is the output of the xrandr command?