Non English keyboard layout not working in Emacs

Hi,

Recently, I upgraded from Trisquel 11 to Trisquel 12 (based on Ubuntu
24.04), which also upgraded Emacs to 29, and when I try to write
something in a Emacs buffer using Bengali keyboard, no character
is inserted in the buffer.

In Trisquel 12, I use Mate Desktop which uses Xorg.  I switch keyboard
layout using Desktop settings.

All other applications like Pluma, Firefox work fine.  In Emacs
buffer, backspace and Enter keys work in Bengali layout. Trying to
invoke C-<a bengali character>, Emacs shows that these keybinding is
undefined (this is expected behaviour).  If I try to read text files
written in Bengali, Emacs displays them correctly.  Emacs' built in
input method also works, and correctly inserts Bengali characters, but
this will be very inconvenient for me to use akin to learning a new
keyboard layout.

The problem exists even when I launch Emacs with `emacs -Q` command.

Thank you.
--
Abhiseck Paira