I'm using Emacs GUI in Gnome. After pressing Ctrl+z, the Emacs window is minimized. However, if I bring the window to the front, it doesn't respond to any key press or mouse event. I searched the web and only found how to bring it back from the command line.
How do I reactivate Emacs when using it in GUI mode?
If you press C-z by mistake then you can add this to your .emacs to make C-z do nothing:
(global-unset-key (kbd "C-z"))
I did that after pressing C-z many times by accident.
(suspend-frame). If you unset C-z, you can still suspend with a C-x before C-z. (I consider this to be a feature but some may take that as inspiration to (global-unset-key (kbd "C-x C-z")).)
Type
fg
or
fg %emacs
to get Emacs back.
You may have to send the process a SIGCONT signal. You normally do this in the console by running kill -CONT $emacs_pid or killall -CONT emacs. If you insist on a GUI solution, you can try the task manager shipped with your distro.
Send it a CONT signal:
killall -CONT emacs
A WINCH signal also seems to work, so you can just resize the Emacs window.
Clicking on any menu items seems to work as well.
If you were running Emacs from a terminal, fg ("foreground") or %emacs would work.
C-s resumes a GUI Emacs after C-z
Try using a window resize command. I was using X11 forwarding to forward the Emacs GUI from a Linux server to my computer (Windows). Hitting C-z minimized the window, and when I brought it back up Emacs had frozen, but resizing it using the Windows key (e.g., Win + Left arrow) unfroze it and it started responding again.
