Changing screen-resolution by ubuntu console

Question

I changed my ubuntu screen-resolution and now it's everything black and I can't change it againd to the old resolution. What do I do?

Thank you.

Answer 1

Try this:

xrandr -s  800x600

Adjust resolution itself as necessary. This works if you've got a running X11.

If the GUI won't start at all, you may want to try removing xorg.conf; as far as I remember it should be automatically regenerated. But just in case, let's just move it aside instead of deleting it.

sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.backup