I am curious about that, When we use KaGaPa keyboard layout (and same other layouts) for Devanagari देवनागरी typing there is some problems we face like there is no proper work with Left Alt but same time Right Alt is work fine.
And any other Debian based operating system like BOSS Linux have no issues with left Alt key but Ubuntu something different.
Is it any thing special in Ubuntu with left Alt key?
ex. you can not type अ with left alter.
You can make Left Alt work the same way as Right Alt by running this command:
But then you'll no longer have access to many shortcuts, so you need to decide which is most important to you.
To change it back you can run:
(or relogin/reboot).