Ubuntu 20.04 Touchscreen on Lenovo Yoga

Question

Touchscreen not working on Lenovo Yoga Laptop running 20.04 LTS released today.

Looking forward to a solution to this issue.

It works after boooting the laptop. But if I close the laptop, and login again, then the touching the screen does not move the cursor anymore. — guettli, Sep 24 '21 at 07:04
@guettli - Please see answer. I suggest you post your info in the OP. — sancho.s ReinstateMonicaCellio, Sep 24 '21 at 09:43
I use a Thinkpad p15v2 with Ubuntu 21.10, and now the touchscreen works. Even after closing the laptop. — guettli, Nov 11 '21 at 09:00
Did everything else on the Yoga work, other than the touch feature? — matanox, Apr 23 '22 at 09:20
Good news: It works with Ubuntu 22.04 (at least on my Lenovo Laptop (P15vGen2)) — guettli, Oct 09 '22 at 08:19

score 3 · Answer 1 · edited May 25 '20 at 18:01

3

I had the same issue so a few search.

I went to

and chose the kernel driver which led to

and basically followed the instructions and did a reboot, touch input started to work again.

For my pen input, it was working without any fix required.

edited May 25 '20 at 18:01

answered May 03 '20 at 16:56

meanmean

Is there a simpler solution (without compiling the kernel)? – guettli Aug 16 '20 at 16:05
1

It doesn't say to recompile the kernel, it says to compile a kernel module. – xpusostomos Aug 18 '20 at 00:27
What is the best way to make it work by default? – guettli Aug 24 '20 at 06:06
I am a user, not a kernel hacker. Above solution does not fit to me. – guettli Sep 30 '21 at 09:49

sancho.s ReinstateMonicaCellio · Answer 2 · 2021-09-24T09:42:40.013

This is a half-comment, but it wouldn't fit or be as readable as convenient if posted as such.

Possible causes

There are a several possible causes for the failure. I am listing here a few, while waiting for your further info (see below).

Power management issues. Drivers often have options for this.
Newer kernel required. This is easily solved by updating the system, $ sudo apt update - $ sudo apt upgrade - reboot.

Please post:

The output of a few commands below (you might need to install neofetch).
```
$ uname -a
$ neofetch
```
The complete model (e.g., Lenovo Yoga Slim 7 15IMH05)
The output, when the touchscreen is working (WKC) and when it is not (NKW), of (you may need to install libinput-tools)
```
$ xinput
$ ubuntu-drivers devices
$ sudo lspci -vnn
$ hwinfo
$ lsmod
$ sudo libinput list-devices
```
Note 1: the output of hwinfo and lsmod is long. You could use pastebin.

Note 2: sudo is important in front of lspci, as it lists devices capabilities, including power management, see above.
Any information that helps identifying: 1) the drivers used by the touchscreen, by comparing WKC and NKW, 2) hardware, 3) problems (dmesg, journalctl, etc.)
Did you try the suggestion here?

apt-add-repository does not have -U option. – Corrado Topi Mar 22 '21 at 08:59
Did everything else on the Yoga work too? Sound, Screen brightness/contrast, Hibernation ... and other driver prone stuff? – matanox Apr 23 '22 at 09:21
Currently up to date OS, sound, screen brightness working. All known drivers working. I don't believe hibernation is working but sleep does, drains battery pretty fast while sleeping though (almost out of battery even after just a day of sleep) – Catskul Apr 24 '22 at 14:09