This is obviously a stupid question. I am coding in Eclipse both on Mac and Linux, but I mixed up and used the Mac shortcut to window tabbing (Ctrl-Cmd-F6), but I was using the Linux on uni and screen went black. I've done this before, but this time I can't get back to my desktop. Ctrl-Alt F1-F6 gives me different terminals, F7 gives me a black screen and F8 a blinking underscore in the top left corner. Shouldn't my session have been somewhere in F1-F6 and is it lost?
4. Super+D or Ctrl+Alt+D: Show desktop.
Many programs use F6 or even Ctrl + F6 for switching windows. More specifically, the Alt + F6 hotkey is for switching among top-level windows in an application. For example, start Notepad, type some text, and then press Ctrl + F to call up the search dialog.
On some Linux-based operating systems including Ubuntu and Debian, Control + Alt + Delete is a shortcut for logging out. On Ubuntu Server, it is used to reboot a computer without logging in.
Ctrl-Alt-F7 should work perhaps your X has crashed?
I just did what you did and F7 got it back for me, saying that before I remember X crashing and I had the same black screen
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