Subject: bug#34109: emacs and gnome

From: Eli Zaretskii <[email-masked]>
Date: Thu, 17 Jan 2019 16:49:13 +0200

> From: Thakur Mahashaya <[email-masked]>
> Cc: "[email-masked]" <[email-masked]>
> Date: Thu, 17 Jan 2019 17:02:17 +0300
> 
> when I enter a command to enter the menu, it seems that this key combination is already somewhere involved, because there are desktop tabs.

Then yes, you should rebind the menu command to a different key.  See
the Emacs manual for how to do that, or ask on [email-masked]
mailing list if you need help.