In the debug log, I found the following message for each input device:
debug <general>: libinput: event2 - skip unconfigured input device '/dev/input/event2'
Adding "lxc.mount.auto: sys:rw" to the LXC configuration fixed the issue - the keyboard now works properly.
Now I am going to try CEC over HDMI.
I'm trying to achieve something similar. Kodi is running inside an LXC container, and I can see the Kodi interface, but USB devices aren't working.
evtest gives me the same results as you described.
My setup is Kodi installed via apt on Ubuntu 25.04, running in the latest Proxmox 9 LXC container.
So I suspect the issue might be related to Kodi running under GDM?
