Please run:
xev | grep -A2 Button
and then middle-click in the little white window.
If it's working then you should see button 2 events, something like:
ButtonPress event, serial 37, synthetic NO, window 0x481,
root 0x156, subw 0x0, time 1291392572, (41,108), root:(98,160),
state 0x10, button 2, same_screen YES
--
ButtonRelease event, serial 37, synthetic NO, window 0x481,
root 0x156, subw 0x0, time 1291392692, (41,108), root:(98,160),
state 0x210, button 2, same_screen YES
What do you see?
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
** Changed in: xorg-server (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1784209
Title:
Mouse wheel click not working
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1784209/+subscriptions
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