Submission type

• Bug report

systemd version the issue has been seen with

238.0

238.0 + #8493

Used distribution

NixOS 18.03pre-git (Impala)

In case of bug report: Expected behaviour you didn't see

All mouse buttons should work

In case of bug report: Unexpected behaviour you saw

For 238.0: Mouse does not work at all.
For 238.0 + patch: Some buttons no longer work.

In case of bug report: Steps to reproduce the problem

• Purchase a MadCatz MMO 7 mouse, or (likely) any other mouse with >16 buttons.
• Run xev to confirm that some buttons don't function.

Further information

The original bug is #8460, which was patched by #8493. Unfortunately, this patch causes the system to ignore any buttons beyond the first sixteen.

The mouse worked fine with systemd 237, so this is a regression.