Comment 7 for bug 261400

Timo Aaltonen is right.

I used a workaround for that, because evdev supports "EmulateWheel" but it doesn't support "EmulateWheelTimeout".
That means, you can use mousebutton 3 (in case you own a ThinkPad it's 2) for scrolling but not for clicking as 3rd mousebutton.

That's terrible! I hope intrpid will support that soon.