pardon my all-caps-rage but...
IT TOOK 9 MONTHS BUT FINALLY I CAN SCROLL WITH MY TOUCHPAD
it's Alps's fault, their policy is so closed source that kernel.org had to reject this patch from the official tree as Alps doesn't want to disclose any detail about their touchpads, no matter what. (source: arch linux forums, i lost the link)
it involves downloading kernel sources, using the command patch -p1 < %patchfile%, compiling a replacement psmouse.ko module and copying it over the current psmouse.ko found under /lib/modules/%kernel-version-number%/kernel/drivers/input/mouse/.
Originally Posted by Aitaix
i've tried the link you posted but it didn't work as it should, meaning that it makes the touchpad turn into an actual "alps touchpad" but scrolling didn't work (or i did something wrong when i tried).
in arch linux forums (again, i've lost this link sorry) i've found this link here:
i've applied the patch and now it's working... no multitouch (alps's fault again) but scrolling works.
notice that this is a patch from/for dell notebooks so it might not work for you as it did for me.
root@sbraz-netbook:~# xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Microsoft Microsoft® SideWinder™ X3 Mouse id=12 [slave pointer (2)]
⎜ ↳ ImPS/2 ALPS GlidePoint id=15 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ USB Keyboard id=10 [slave keyboard (3)]
↳ USB Keyboard id=11 [slave keyboard (3)]
↳ 1.3M WebCam id=13 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
↳ Acer WMI hotkeys id=16 [slave keyboard (3)]
also, be careful when carelessly messing with sources and kernel modules, you risk bricking your box.