The problem still exists in 14.04 but seemingly not on all devices. I still have this on Lenovo Yoga 2 Pro. I solved it by adding
synclient TapButton2=3
see http://askubuntu.com/questions/160164/how-do-i-enable-middle-mouse-button-emulation-in-12-04-lts/518612#518612
The problem still exists in 14.04 but seemingly not on all devices. I still have this on Lenovo Yoga 2 Pro. I solved it by adding
synclient TapButton2=3
see http:// askubuntu. com/questions/ 160164/ how-do- i-enable- middle- mouse-button- emulation- in-12-04- lts/518612# 518612