Arch Linux

ColtonDRG

Member

Registered: 2015-05-20

Posts: 10

[SOLVED] Acer C710 touchpad stops working after logging in

I have installed Arch Linux with GNOME 3 on my Acer C710 Chromebook. Everything seems to be working okay, but the touchpad stops working after I log in. It works fine in GDM, but as soon as I log in, it stops detecting touches. I can still click with it (i.e. use an external mouse to move the pointer over a button, then click on the touchpad to activate the button), but I cannot move the pointer with the touchpad. I am clueless as to what could be causing this as I never had this issue before when I was using MATE on the same computer.

SOLVED: Install the xf86-input-synaptics package from the official repositories.

Last edited by ColtonDRG (2015-08-31 04:39:30)

Head_on_a_Stick

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From: The Wirral

Registered: 2014-02-20

Posts: 9,003

Website

Re: [SOLVED] Acer C710 touchpad stops working after logging in

Are you using the Wayland version of GNOME?

I think that uses libinput rather than synaptics and is still lacking some configuration options.

Does the device show up in the output of `xinput`?

---

Jin, Jîyan, Azadî

ColtonDRG

Member

Registered: 2015-05-20

Posts: 10

Re: [SOLVED] Acer C710 touchpad stops working after logging in

Are you using the Wayland version of GNOME?

I think that uses libinput rather than synaptics and is still lacking some configuration options.

Does the device show up in the output of `xinput`?

No. I'm using X11 for GNOME. Edit: That being said, I think GDM is running under Wayland.

Yes, the device does show up in xinput. Here's the exact output of that. (The touchpad is Cypress APA Trackpad (cyapa))

[coltondrg@pinkiepie ~]$ xinput
⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ Cypress APA Trackpad (cyapa)            	id=13	[slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                   	id=11	[slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                   	id=12	[slave  pointer  (2)]
⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
    ↳ Power Button                            	id=6	[slave  keyboard (3)]
    ↳ Power Button                            	id=8	[slave  keyboard (3)]
    ↳ Sleep Button                            	id=9	[slave  keyboard (3)]
    ↳ HD WebCam                               	id=10	[slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard            	id=14	[slave  keyboard (3)]
    ↳ Video Bus                               	id=7	[slave  keyboard (3)]
[coltondrg@pinkiepie ~]$ 

Last edited by ColtonDRG (2015-08-31 04:38:50)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 9,003

Website

Re: [SOLVED] Acer C710 touchpad stops working after logging in

Have you tried the Xorg configuration file listed in the ArchWiki?
https://wiki.archlinux.org/index.php/Ac … figuration

---

Jin, Jîyan, Azadî

ColtonDRG

Member

Registered: 2015-05-20

Posts: 10

Re: [SOLVED] Acer C710 touchpad stops working after logging in

Have you tried the Xorg configuration file listed in the ArchWiki?
https://wiki.archlinux.org/index.php/Ac … figuration

Yes. After installing that my system would just kick me back to the GDM user selection screen after typing the correct password. That made it impossible to log into the graphical environment. I was only able to recover by using a text terminal to log in and delete the file. I suppose I'll try it again.

Update: After reinstalling that file, it is allowing me to log in, no idea what was wrong with that before, but the touchpad still doesn't work. It is worth noting that this is the older C710 model, not the C720, which the wiki page refers to. The devices do have a lot of similarities, but I believe the touchpad is not one.

Update 2: Using top in a text terminal while GNOME is logged out and GDM is running reveals that GDM is indeed running under Wayland as there is no xorg process.

Last edited by ColtonDRG (2015-08-30 20:57:44)

ColtonDRG

Member

Registered: 2015-05-20

Posts: 10

Re: [SOLVED] Acer C710 touchpad stops working after logging in

Alright, I got it fixed. \o/ Apparently the Synaptics driver required for my touchpad to work in Xorg was not installed. I installed xf86-input-synaptics. I guess what threw me off was the fact that I never had to do this before when I was running MATE on the machine, and the touchpad did work in GDM (which is on Wayland, not Xorg).

Thanks for trying to help.