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01-12-2021, 07:36 PM
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#1
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LQ Newbie
Registered: Nov 2019
Distribution: Debian
Posts: 20
Rep: 
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Debian Bullseye Touchpad Not Working SynPS/2 Synaptics Touchpad
Hello,
I am having an issue getting a touchpad working in Debian Linux. when I run
xinput list
it shows
N: Name="SynPS/2 Synaptics TouchPad"
The touchpad does not respond. It is enabled in Settings. It works fine in Windows 10 ( I dual boot ).
Any help learning how to troubleshoot this is appreciated.
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01-12-2021, 07:54 PM
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#2
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LQ Guru
Registered: Sep 2003
Location: Auckland, NZ
Distribution: openSUSE Leap
Posts: 5,963
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From an Xorg driver perspective, show which driver is in use for that input device..,
Code:
grep -i ‘using input’ /var/log/Xorg.0.log
It could be that there is no kernel support for it (if a new device perhaps)...
Code:
dmesg | grep -i ‘input’
Last edited by ferrari; 01-12-2021 at 07:55 PM.
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01-12-2021, 08:00 PM
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#3
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LQ Newbie
Registered: Nov 2019
Distribution: Debian
Posts: 20
Original Poster
Rep: 
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Quote:
Originally Posted by ferrari
From an Xorg driver perspective, show which driver is in use for that input device..,
Code:
grep -i ‘using input’ /var/log/Xorg.0.log
It could be that there is no kernel support for it (if a new device perhaps)...
Code:
dmesg | grep -i ‘input’
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Using those exact commands returned nothing. Had to sudo the dmesg.
Thank you.
If this info helps I ran : sudo dmesg | grep -i Syn
https://pastebin.com/13VUZfdN
Still a newbie at Linux.
Last edited by kn4thx; 01-12-2021 at 08:08 PM.
Reason: Additional Info
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01-12-2021, 08:18 PM
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#4
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LQ Guru
Registered: Sep 2003
Location: Auckland, NZ
Distribution: openSUSE Leap
Posts: 5,963
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Yes, sudo is sometimes required. Depends on the distro.
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01-12-2021, 08:19 PM
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#5
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LQ Guru
Registered: Sep 2003
Location: Auckland, NZ
Distribution: openSUSE Leap
Posts: 5,963
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You can examine the Xorg log for yourself to see which input driver is used for the touchpad.
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01-12-2021, 08:31 PM
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#6
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LQ Guru
Registered: Sep 2003
Location: Auckland, NZ
Distribution: openSUSE Leap
Posts: 5,963
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The dmesg output for the touchpad is as expected.
Which desktop environment are you using? Not disabled there perhaps?
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01-12-2021, 08:42 PM
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#7
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LQ Newbie
Registered: Nov 2019
Distribution: Debian
Posts: 20
Original Poster
Rep: 
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Here is what I found in the Xorg file :
[ 4.055] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event11)
[ 4.055] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[ 4.055] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "libinput touchpad catchall"
[ 4.055] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[ 4.055] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Default clickpad buttons"
I am in Cinnamon currently but also tried Gnome. I was originally in Xfce and hopped over to test other DEs.
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01-12-2021, 08:49 PM
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#8
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Moderator
Registered: Feb 2003
Location: Arizona, USA
Distribution: Debian, EndeavourOS, OpenSUSE, KDE Neon
Posts: 4,027
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What model is your laptop? A lot of "older" laptops work much better with synaptics driver than libinput. By "older", basically means pre-Skylake.
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01-12-2021, 08:53 PM
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#9
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LQ Newbie
Registered: Nov 2019
Distribution: Debian
Posts: 20
Original Poster
Rep: 
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It is a T14 AMD laptop. The touchpad was replaced with a 01LX660 from an X1 Extreme so everything is fairly modern.
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01-12-2021, 09:09 PM
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#10
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Moderator
Registered: Feb 2003
Location: Arizona, USA
Distribution: Debian, EndeavourOS, OpenSUSE, KDE Neon
Posts: 4,027
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Well, I can tell you the stock touchpad would have worked FANTASTIC, I used my T14 AMD w/ Debian 11 for a bit before moving to EndeavourOS and it worked absolutely perfectly. No idea about an X1 Extreme touchpad, but surprised it doesn't work with libinput.
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