Touchpad Not Working

a11smiles · 04-05-2018, 05:39 PM

I know this is the constant headache of all. But, I've installed Centos 7 on a Lenovo IdeaPad.

The touchpad doesn't work.

I've got the synaptics drivers installed. I've tried both kernels: 3.10 and 4.16.

I've tried in EFI/EUFI and Legacy Mode (with and without secure boot).

I've added i8042.nopnp to the end of the grub commond line.

My 50-synaptics.conf is present in /usr/share/X11/xorg.conf.d. It is matching /dev/input/event*

synclient says no driver is installed. Xorg.*.log doesn't say anything about mouse, ps/2, or synaptics

Interestingly enough, my xinput lists a Virtual core pointer and Virtual core keyboard. Under the Virtual core pointer, there's only a virtual core XTEST pointer. However, under keyboard, I have:

Virtual core XTEST keyboard
Power Button
Video Bus
Power Button
EasyCamera: EasyCamera
Ideapad extra buttons
AT Translated Set 2 keyboard

And, these are all loaded by 10-evdev.conf.

Could some of these be mislabeled?

However, I would love to get my touchpad working.

Any thoughts?

ferrari · 04-06-2018, 07:34 PM

Start from the top. To see which Xorg driver is handling a given input device, the Xorg.0.log file needs to be examined.

Code:

grep "Using input driver" /var/log/Xorg.0.log

It is likely that the libinput driver is in use, rather than the deprecated evdev or syynaptics drivers.

ferrari · 04-06-2018, 07:43 PM

For a bit more definitive information on the input hardware we're dealing with here, you could share the output of

Code:

cat /proc/bus/input/devices

* Ideally, just the output block pertaining to your touchpad device (assuming you can identify it as such).

Michael Uplawski · 04-06-2018, 11:57 PM

See also, if “xinput” lists the touchpad and if so, verify that its “Device Enabled” variable is set to 1. If the touchpad is listed by xinput, you can routinely enable it with

Code:

xinput set-prop [id] "Device Enabled" 1

I mention xinput, because in the past it solved the problem with the inactive touchpad a few times for me.

a11smiles · 04-15-2018, 10:57 PM

Quote:

Originally Posted by ferrari

Start from the top. To see which Xorg driver is handling a given input device, the Xorg.0.log file needs to be examined.

Code:

grep "Using input driver" /var/log/Xorg.0.log

It is likely that the libinput driver is in use, rather than the deprecated evdev or syynaptics drivers.

It doesn't even list the input driver.

a11smiles · 04-15-2018, 11:00 PM

Quote:

Originally Posted by ferrari

For a bit more definitive information on the input hardware we're dealing with here, you could share the output of

Code:

cat /proc/bus/input/devices

* Ideally, just the output block pertaining to your touchpad device (assuming you can identify it as such).

Yup, I've tried this too. It finds the keyboard, camera, a couple of other devices, but no touchpad. I even edited the /usr/share/X11/xorg.conf.d and attempted to specifically, manually match each /dev/input/event*, but that didn't help either.

a11smiles · 04-15-2018, 11:00 PM

Quote:

Originally Posted by Michael Uplawski

See also, if “xinput” lists the touchpad and if so, verify that its “Device Enabled” variable is set to 1. If the touchpad is listed by xinput, you can routinely enable it with

Code:

xinput set-prop [id] "Device Enabled" 1

I mention xinput, because in the past it solved the problem with the inactive touchpad a few times for me.

Nope, tried this as well. The xinput doesn't list the touchpad (disabled or enabled).

a11smiles · 04-15-2018, 11:02 PM

I ended up removing CentOS and going for Ubuntu. It appears there's quite a few incompatibility issues with this particular chipset and I didn't have the time at the moment to try to nail down each one.