Comment 33 for bug 1480615

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Philippe Ombredanne (pombredanne) wrote :

So here is where I am now with the latest kernel update from a few days ago and everything up-to-date apt-get wise:

$ uname -a
Linux COMPUTER 3.16.0-48-generic #64~14.04.1-Ubuntu SMP Thu Aug 20 23:03:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

As mentioned above, when I reboot, xinput report an incorrect device and there are various issues with using the touchpad. I am doing a :

modprobe -r psmouse && modprobe psmouse

After that xinput reports AlpsPS/2 ALPS DualPoint TouchPad correctly and from that point on, things are working mostly fine. Now and then if the touchpad stops working correctly, things are resolved by pressing Fn+F5 twice (effectively disabling then enabling the touchpad).

If I ever go in suspend mode, I need to always press Fn+F5 twice to get a functional touchpad.

Please advise on the next setps I should take.