[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1763755
Title:
'SynPS/2 Synaptics TouchPad' doesn't work 'Lenovo Thinkpad T440p'
after the kernel upgrade
Status in linux package in Ubuntu:
Expired
Bug description:
Hi all,
I have been using Xubuntu 16.04 since June 2016 on my Lenovo Thinkpad
T440p (i5-4210M, 16GB RAM, NVIDIA 730M). However since last year
(probably after a kernel upgrade), my touchpad has stopped working (I
always keep the system upgraded via apt update/upgrade. It doesn't
work at all, and I have to use an external mouse.
Only very rarely, it somehow works as well (by rare I mean twice in
the last two years), but as soon as I reboot, the state is back to
non-working at all. Additionally, even when working in those two rare
occasions, the touchpad behaved erratically, i.e., the tap click was
not working and the pointer was kind of jumpy.
As per the description at
https://wiki.ubuntu.com/DebuggingTouchpadDetection, I attach an
archive touchpad_debug.tar.gz containing two sub-folders working_state
and nonworking_state. Each folder contains the dmesg output, my
/proc/bus/input/devices, and my /var/log/Xorg.0.log when the touchpad
was working and not working. In working_state, I additionally have the
outputs to "xmodmap -pp", "xinput --list ", and "xinput --list-props
<id>".
Regards,
Omer
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