I can confirm this. They aren't mouse buttons, but the events do appear on the mouse event interface. I was able to make this work with udev rules in 5.10 and below, but in Dapper and above, this fails. I have a similar bug open for this. See #39509.
-- no multimedia keys when using evdev with mouse https://launchpad.net/bugs/44169 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
