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#1 2022-05-20 20:36:20

sephiroth986
Member
Registered: 2022-01-18
Posts: 22

Left touchpad button don't work randomly

Hi guys

I have installed many distro before arch, and i have always the same problem. Actually i have arch with lxqt on hp pavilion dv5 1210el. Any time i start my laptop and the left touchpad button don't work. Next any 5-10 minutes, the button work again. If i reboot the system, any time the button work, any time no... This problem is random and i can't find a solution... Any idea? Tnx

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#2 2022-05-20 21:14:42

Maniaxx
Member
From: .de
Registered: 2014-05-14
Posts: 628

Re: Left touchpad button don't work randomly

Rather sounds like a hardware problem.
Its an old device. Many suffered from new RoHS directive (lead-free solder-joint reliability). Temperature dependent behavior is a typical symptom (broken BGA joints). Just a guess though.
Maybe the microswitch is just worn out/dirty.

Last edited by Maniaxx (2022-05-20 21:16:07)


sys2064

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#3 2022-05-20 23:45:03

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 18,391

Re: Left touchpad button don't work randomly

I agree it sounds like flaky hardware.  You could try a workaround with multitouch (if the touchpad supports ir)
Anything of interest in the journal when things stop/start working?

Bigger problems with early lead-free is tin whiskers, but I doubt that is the issue here.  For fun reading: https://nepp.nasa.gov/whisker/background/index.htm


Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#4 2022-05-21 02:43:34

sephiroth986
Member
Registered: 2022-01-18
Posts: 22

Re: Left touchpad button don't work randomly

I don't think an hardware problem, because if i connect an usb mouse, then next the button work again next any seconds...the same if i reboot the system 1 or 2 time, the button work. The connector is clean, i have open the machine 3 weeks ago for fix the cooler fan.

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#5 2022-05-21 08:34:00

Maniaxx
Member
From: .de
Registered: 2014-05-14
Posts: 628

Re: Left touchpad button don't work randomly

Maybe a power rail is weak or a capacitor dry. Same behavior if you run it on AC-only, battery-only and mixed?
The external mouse works properly?
Look up with 'lsusb -vt' if the touchpad is on a shared controller. Maybe you can disable some possibly interfering devices in BIOS.


sys2064

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#6 2022-05-21 10:51:21

sephiroth986
Member
Registered: 2022-01-18
Posts: 22

Re: Left touchpad button don't work randomly

This machine work only ac because the battery don't work. External mouse work good without problem.

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