Hello. I also have a keyboard compatibility problem. However my problem is with the bluetooth remote keyboard interface from my Thinkpad X220. I have no acces to AltGr keys such as @, £, $ with any keybord layout. Normal USB keyboard works just fine.
I believe I've tried nearly every possible keyboard from the raspi-config menu but no success so far
I wrote the following post to Lenovo forums but didn't get help.
I am doing a bit of coding and stuff with my Raspberry Pi using X220 and the 'Remote keyboard and mouse' -interface. The problem is, I have no access to Ctrl + Alt + [key] selections such as @, £, $ etc. (I am using a Fininsh keyboard layout). I tried with a normal USB keyboard and everything worked just fine.
Is there a way to reconfigure Remote keyboard somehow? Could anyone help? The application is named BTWUIHid.