I recently upgraded from Ubuntu Studio 16.04 to Kubuntu 20.04 (installed fresh on new partition), and after this the two thumb buttons on my GMX 5 mouse stopped working. When using Ubuntu 16.04 I never had to do anything to get them working, just plugged in the mouse and the buttons were immediately recognized in xev and I could use xbindkeys to set them to desired keyboard presses. When I run xev in 20.04 and press the thumb buttons I only get this:
KeymapNotify event, serial 39, synthetic NO, window 0x0,
keys: 4294967236 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Instead of the expected output when pressing a mouse button.
When running xinput I get this, I find it curious that the mouse seem to have two entries under pointer and three under keyboard:
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ E-Signal USB Gaming Mouse id=8 [slave pointer (2)]
⎜ ↳ E-Signal USB Gaming Mouse Consumer Control id=11 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=7 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ E-Signal USB Gaming Mouse Keyboard id=9 [slave keyboard (3)]
↳ E-Signal USB Gaming Mouse System Control id=10 [slave keyboard (3)]
↳ Eee PC WMI hotkeys id=12 [slave keyboard (3)]
↳ E-Signal USB Gaming Mouse Consumer Control id=14 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]
When running xinput query-state for the two pointer id:s 8 and 11 I get different results, 8 reports buttons 1-9, while id 11 only reports 7 buttons, I wonder if this has any significance?
What can I do to get the extra mouse buttons detected again?