I am using Ubuntu 16.04.1 and my keyboard layout is "German". AltGr+q does produce the @ character, but Ctrl+Alt+q does not. I just realised because somebody new to Ubuntu and accustomed to Windows just asked me how to enter @ symbol on Ubuntu.
If Ctrl+Alt+q also produced the @ character, that would be one little issue less to worry about.
I am using Ubuntu 16.04.1 and my keyboard layout is "German". AltGr+q does produce the @ character, but Ctrl+Alt+q does not. I just realised because somebody new to Ubuntu and accustomed to Windows just asked me how to enter @ symbol on Ubuntu.
If Ctrl+Alt+q also produced the @ character, that would be one little issue less to worry about.