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[bagl0312 <380126@xxxxxxxxxxxxxxxxxx>]

@Odin I don't know if this bug is really a duplicated of 359363 or
550625

In Bug 550625 I found a solution which enables the scrolling with the
touchpad of my Dell M4500:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/550625

The solution described (see #154, #203 and other entries) is based on recompiling psmouse.ko module with the patch described in #154. 
After installing the recompiled module the scrolling works,  even if  the touchpad is still not recognized in gnome-mouse-properties.

I tested it in 10.10 64 bits.

For your convenience I report here the list of commands needed to
recompile the module:

1) Install kernel headers:
 sudo apt-get build-dep --no-install-recommends linux-image-$(uname -r)
 apt-get source linux-image-$(uname -r)

this creates a "linux-[your-version]" directory into your home

install git:
 sudo apt-get install git

change into it:
 cd src/drivers/input/mouse

and backup alps.c, alps.h, psmouse.h

apply patch (take the patch from entry #154 above):

patch -p0 < 2.6.35-alps-730264-imps-emulation.patch

make & install:
 make -C /lib/modules/`uname -r`/build M=`pwd` psmouse.ko
 sudo rmmod psmouse
 sudo cp psmouse.ko /lib/modules/`uname -r`/kernel/drivers/input/mouse/
 sudo modprobe psmouse

-- 
[Karmic] Touchpad not recognised correctly, synaptics driver not in use
https://bugs.launchpad.net/bugs/380126
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