Comment 14 for bug 2059847

I have similar problem. I'm currently using Ubuntu 22.04.4 LTS (x86_64). Since some days (maybe three?) I see very odd behaviour from programs running in gnome-terminal (or xfce4-terminal if it does not matter, I guess the problem is not the terminal itself but VTE probably or similar? - no problem when using KDE's Konsole for example!). I also have nvidia's driver.

Some programs "only" have very significant input delay, sometimes like 1 sec or so. However interestingly some programs (most notably neomutt) has "infinite" delay, ie, it lags behind exactly one key. For example if I move upwards in the email list, then pressing down still moves up once. And so on, it seems to be true for all keys. Other applications running in terminal seems to "only" have more significant delay, but it's not always consistent. Especially ssh'ing to a remote machine is a very bad experience now, but even on the local host, without any ssh involved just the shell, it's very notable.

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.4 LTS
Release: 22.04
Codename: jammy
$ dpkg -l | grep mutter
ii gir1.2-mutter-10:amd64 42.9-0ubuntu7 amd64 GObject introspection data for Mutter
ii libmutter-10-0:amd64 42.9-0ubuntu7 amd64 window manager library from the Mutter window manager
ii mutter-common 42.9-0ubuntu7 all shared files for the Mutter window manager