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10 Posts

04-24-2021

United States of America

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What is the proper Yoga c940 touchpad driver?

2021-04-26, 22:27 PM

1) touchpad: two-finger scroll is very very slow and I can find no setting to change it (normally adjustable in a synaptic/elan tab)
2) touchpad: curser speed is very slow despite being set to max speed in windows control panel (10)

Question 1: How can I verify that I am running the proper touchpad drivers ?
Question 2: Who is the touchpad manufacturer (elan or synaptics?)

Starting to get finger pain mainly when reading, I wish other way's of scrolling was practical but not in this case :/
Am I the only one with this problem?

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19 Posts

10-08-2019

China

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What is the proper Yoga c940 touchpad driver?

2021-04-27, 6:17 AM
Hi Haddock 1903, Maybe you can try to launch Lenovo Vantage and click System update to detect and install the lastest touchpad driver
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10 Posts

04-24-2021

United States of America

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Re:What is the proper Yoga c940 touchpad driver?

2021-04-27, 8:27 AM

Thank you for helping Michaelli1.Vantage is not detecting and installing a touchpad driver, I think because no touchpad driver is tagged with c940 https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/yoga-series/yoga-c940-15irh/81te/81te0011mx/r90xq4rh/downloads/driver-list/

Microsoft recommends contacting manufacturer for the device driver in order to gain full precision touchpad functionality, so I added a screenshot of those drivers in main post.

1) how can I verify that I am running the proper driver?

2) is it an elan or a synaptics manufactured touchpad?

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160 Posts

04-26-2020

United Kingdom of Great Britain and Northern Ireland

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Re:What is the proper Yoga c940 touchpad driver?

2021-04-27, 9:47 AM

The vantage update for the C940 has never ever worked. typical lenovo.

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10 Posts

04-24-2021

United States of America

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Re:What is the proper Yoga c940 touchpad driver?

2021-04-27, 20:50 PM

Lol not sure if you nailed it, but yeah I've never seen it download a driver, ever 😆
How are you updating yours?

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19 Posts

10-08-2019

China

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Re:What is the proper Yoga c940 touchpad driver?

2021-04-28, 6:16 AM
The Touchpad controlled by the Intel SerialIO driver. Maybe you can try to install Intel SerialIO driver to fix it. Thanks. https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/yoga-series/yoga-c940-15irh/81te/81te0011mx/r90xq4rh/downloads/ds541852-intel-serial-io-sio-driver-for-windows-10-64-bit-yoga-c940-15irh
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10 Posts

04-24-2021

United States of America

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Re:What is the proper Yoga c940 touchpad driver?

2021-04-28, 8:15 AM

Thank you for helping Michaelli1, I am sure it can not be easy to help so many people solve a lot of problems, is there any way I can be more clear and help expedite a solution?

I tried installing Intel SerialIO driver manually, but it did not appear to make touchpad curser more responsive, two-finger scroll speed faster or make any new touchpad menu accessible.

 

I am still unclear about:

1) how can I verify that I am running the proper driver?

2) is it an elan or a synaptics manufactured touchpad?
Where is the correct place to ask this question?

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10 Posts

04-24-2021

United States of America

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Re:What is the proper Yoga c940 touchpad driver?

2021-04-28, 9:57 AM

hmm, seems like the answer to question 1 is to:
1) open device manager, right-lick touchpad - left-click properties, details tab, select hardware ID.
2) my touchpad hardware ID is "HID\VEN_MSFT&DEV_0001&Col01" which seems to be a generic driver for Synaptics touchpad for dell, Lenovo etc.
(driver is supplied through windows update, not vantage and not on Lenovo website)

 

Not sure if that is the correct driver, but seems likely some fallback default which is maybe why it's not running too great?

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3 Posts

05-18-2021

United States of America

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  • Message 9 of 9

Re:What is the proper Yoga c940 touchpad driver?

2021-09-01, 21:14 PM
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