Dear Dmitry & linux-input members,
some new Asus (and probably non-Asus) laptops are shipped with a new
kind of Elantech (not sure if only Elantech) touchpads which are not
adequately handled by Linux kernel module (psmouse). First problem is
that these touchpads are dying off (losing their sensitivity and
response) when the system is put into pm-suspend and then waken up.
Another problem is that on reload (modprobe -r ... && modprobe ...) of
psmouse module they are dying off too, in 'dmesg' coming with some
weird-numbered indexes (like, input5 on initial load and input292 on
reload of psmouse).
There are some bugs reported in Ubuntu Launchpad on this topic
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1519034 is my own,
also
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490130 ,
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1506363 ,
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1504445 and some
others).
Also there is a proposed patch at
https://marc.info/?l=linux-input&m=144312209020616
and one more report at
http://www.spinics.net/lists/linux-input/msg41634.html
For me, these problems look related. I have Asus X302LA on which I am
testing Ubuntu Xenial and whose touchpad exhibits this problem. If you
need I could provide my assistance in testing psmouse module on this
hardware. Thank you in advance for your response.
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