Arch Linux

9Meteor6

Member

Registered: 2025-03-31

Posts: 2

Synaptics Touchpad not working

I have this laptop with a synaptics touchpad that does not work.

with

libinput list-devices

I get

Device:                  SynPS/2 Synaptics TouchPad
Kernel:                  /dev/input/event13
Id:                      serial:0002:0007
Group:                   8
Seat:                    seat0, default
Size:                    70x50mm
Capabilities:            pointer gesture
Tap-to-click:            disabled
Tap-and-drag:            enabled
Tap button map:          left/right/middle
Tap drag lock:           disabled
Left-handed:             disabled
Nat.scrolling:           disabled
Middle emulation:        disabled
Calibration:             n/a
Scroll methods:          *two-finger edge 
Scroll button:           n/a
Scroll button lock:      n/a
Click methods:           *button-areas clickfinger 
Clickfinger button map:  left/right/middle
Disable-w-typing:        enabled
Disable-w-trackpointing: enabled
Accel profiles:          flat *adaptive custom
Rotation:                n/a
Area rectangle:          n/a

but it doesn't generate any events if I run

libinput debug-events /dev/input/event13

jonno2002

Member

Registered: 2016-11-21

Posts: 854

Re: Synaptics Touchpad not working

i think youll find theres 2 touchpad devices and youve picked the wrong one:

libinput list-devices|grep -i -A 1 touch

mine came up with 2 devices, 1 produced debug output and the other didnt....

9Meteor6

Member

Registered: 2025-03-31

Posts: 2

Re: Synaptics Touchpad not working

ran

libinput list-devices|grep -i -A 1 touch

and got

Device:                  SynPS/2 Synaptics TouchPad
Kernel:                  /dev/input/event13

as the output

hias

Member

Registered: 2022-06-05

Posts: 4

Re: Synaptics Touchpad not working

Hi,
I'm not sure if this is related or if I should open a separate thread, but:
On my laptop, the

SynPS/2 Synaptics TouchPad

doesn't show up after waking from standby. On the second attempt — if I close the lid again (-> standby) and then open it (-> wake up) — the touchpad works.
Running

libinput list-devices | grep -i -A 1 touch

returns one result, and the journal shows:

kernel: input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio2/input/input143

,
which does not appear when the touchpad is not working.
the whole thing started after system upgrade on 2025-03-14. Yesterday I did another -Syu, but unfortunately without improvement.
any idea what else I can try to get to the bottom of this?

$ uname -a
Linux hiasTUXEDO 6.12.24-1-lts #1 SMP PREEMPT_DYNAMIC Sun, 20 Apr 2025 08:45:23 +0000 x86_64 GNU/Linux

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seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,305

Re: Synaptics Touchpad not working

Post a complete system journal covering the two suspend cycles - the touchpad works after the boot, before the first suspend?
Doesn't sound like the OP which has a device but it's not generating input

@9Meteor6, do you get input in "sudo evtest"? Did you maybe or try use some hardware toggle (there's typically a key to toggle the touchpad resp. a soft-touch button/area in the pad to toggle it)

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hias

Member

Registered: 2022-06-05

Posts: 4

Re: Synaptics Touchpad not working

I found this wiki article,
but none of the permanent solutions work for me. Reloading the kernel module works temporarily.
While doing so I saw this message:

kernel: psmouse serio2: synaptics: Your touchpad (PNP: SYN1221 PNP0f13) says it can support a different bus. If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.

I had previously set the value to 0 as mentioned in the wiki article.
Setting

psmouse.synaptics_intertouch=1

in the kernel command line seems to work perfectly for me. Strange and interesting

EDIT: Log Snippet

Last edited by hias (2025-04-26 19:41:22)

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seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,305

Re: Synaptics Touchpad not working

1st link below,

sudo journalctl -b | curl -F 'file=@-' 0x0.st

will paste the journal of the current boot to 0x0.st

https://bbs.archlinux.org/viewtopic.php?id=304934 - I suspect there was a stale kernel update for dodo3773 after all.

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