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 0x4800001, 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 0x4800001, 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 -- 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 _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp