It seems that this line: <merge key="input.x11_options.ButtonMapping" type="string">1 8 3 2 9</merge>
in my HAL policy file was the cause of the problem. Scrolling up was emulating a click of button 4, which was getting re-mapped to button 2, which caused a paste event rather then a scroll event. I have removed that line from my policy file and it works fine now. Marking invalid. ** Changed in: xorg-server (Ubuntu) Status: New => Invalid -- Emulation of middle button and scroll wheel is broken. https://bugs.launchpad.net/bugs/326769 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs