Thursday, June 2, 2011

Vertical scroll not working HP Pavilion dm3 Notebook Touchpad in Natty/Ubutnu

This is a generic issue and not tied with HP Pavilion dm3 Notebooks. Many notebook touchpads do not have a working edge scroll first time with Ubuntu. The key is to pass a option to the psmouse module.

lsmod

See if psmouse is running. If not running check here

/lib/modules/`uname -r`/kernel/drivers/input/mouse

Do a ls. If no psmouse.ko is present then it has to be recompiled with latest kernel headers. I would not go into that.

Assuming psmouse is present. Then unload it by

rmmod psmouse

Then inject the following line

sudo echo "options psmouse proto=imps" >> /etc/modprobe.d/psmouse.conf

It might give an error if the file is not present. Then

sudo echo "options psmouse proto=imps" > /etc/modprobe.d/psmouse.conf

Reload the psmouse module

modprobe psmouse

The vertical scroll should work now.

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