I've got a 14m2 digital billboard with a computer behind which is working on Xubuntu.
Everything works just fine when it's turned on, the ads are showing correctly and stuff like that, but I need to change those ads. When I used to turn the computer and the digital billboard on it starts and after the boot screen that says Xubuntu it goes straight to the ads (so the ads start playing automatically when the PC turns on).
After reading some things about Ubuntu I wanted to go and use the interface of the computer like in Windows, so I pressed Ctrl+Alt+F1-F7 and there goes my problem. The only thing that my monitor displays is some weird text which looks like the text isn't being decoded.