I had 8.10 installed on my laptop, a 'Pangolin Value 3' from system76 (http://knowledge76.com/index.php/Panv3, I think it is https://wiki.ubuntu.com/LaptopTestingTeam/CompalIFL91). I _believe_, but might be mistaken, that it has an elantech, not synaptics, touchpad. I upgraded to the 9.04 alpha "a few weeks ago," probably some time after the Alpha 4 release; I _think_ I used the "alt-f2, update-manager -d" method. Tonight I did a sudo apt-get update && sudo apt-get upgrade, rebooted when prompted, and then noticed the touchpad was not behaving properly. This was probably the first time I'd used the touchpad since trying the 9.04 alpha. The incorrect behaviors are:
- vertical scroll does not work. Trying to scroll (moving my finger up or down at the far right of the touchpad) just moves the mouse.
- middle-clicking with a two-finger tap does not work. Instead the page moves up or down a few lines, depending on the order in which my fingers touch the touchpad. I hope that this was not intended as a new feature, unless there is a good new way to emulate a middle-click!
I rebooted into my 8.10 release and the scrolling and two-fingers-to-middle-click features both work fine.