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07-24-2018

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T440 20B7 Touchpad not working

2018-07-25, 0:05 AM

I'm in dire need of some help.

 

The touchpad just stopped working today on my T440. Now I have worked on lenovo laptops for the past 3 years so I thought I could figure this out on my own but I'm stumped. Any time I try to uninstall/reinstall the drivers then go to mouse properties/thinkpad ultranav tab, the trackpoint options are available to be changed but the touchpad options are completely grayed out. There is no option under Pointing Options for Touchpad and trackpoint both, only "Use TrackPoint only". The trackpoint does work but touchpad does not.

 

Also gestures such as two finger scroll and zoom work just fine...

 

Here is what I have tried to do to fix the problem, all have been unsuccessful...

 

Unistalled the drivers through Device Manager, restarted then reinstalled the drivers using the most up to date drivers from the lenovo support page.

Uninstalled the drivers again, restarted, then reinstalled the drivers through Lenovo's update utility, Lenovo Vantage.

Went into the BIOS to make sure that both were enabled, they were. Even set the bios back to defaults and tried again, still didnt work.

I completely reinstalled Windows using the built in tool in settings.

I completely formatted the drive and reinstalled Windows using a bootable USB.

I plugged in a usb bootable drive with SELinux and logged in, THE TOUCHPAD WORKED FINE!!

I unscrewed the back cover to insure that the ribbon cables were completely plugged in, they were..

 

 

Like I said before I've worked on these exact machines before, but I just can't figure this one out.

The machine has been out of warranty for over a year now, hopefully not a board issue. 

 

Any help is very welcome!

 

 

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8 Posts

10-26-2015

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Re: T440 20B7 Touchpad not working

2018-12-21, 13:09 PM

Did you ever resolve this issue? This is what I'm quite sure you're seeing! I've used many different drivers. A newer driver was added last week that didn't change things either. 

 

 

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1 Posts

12-28-2018

HR

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Re: T440 20B7 Touchpad not working

2018-12-28, 17:45 PM

Exactly same problem here. Hopefully someone will find solution.

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2 Posts

01-11-2019

CA

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Re: T440 20B7 Touchpad not working

2019-01-11, 23:42 PM

Had exactly the same problem and tried everything.  What finally worked was reformatting and re partioning the hard drive and then starting from scratch with a new installation from original windows install image.    Do not have any other pointing devices plugged in during the reinstallation.

 

After the final reboot you may lose the touchpad again.  If this happens, do not plug a mouse in, but instead use keyboard short cuts to uninstall the Synaptic program, reboot, then install the latest Synaptic driver.  Good luck if you don't know the keyboard shortcuts to get around windows without a pointing device as the installation will not proceed properly if you have a mouse driver installed.

 

Only glitch now is that when the notebook goes into power save you occasionally lose the touchpad, but hitting the power button to hibernate the computer then again to awaken it will restore the pointing device.

 

Good Luck

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8 Posts

10-26-2015

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Re: T440 20B7 Touchpad not working

2019-01-12, 0:00 AM

THANK YOU!!!!

 

I had assumed that a 'clean install' might accomplish the desired fix. I'm not bothered much by it but I'm considering a sale. I was considering selling with a W10 'CLEAN INSTALL' and including the Lenovo Restore DVD package. I've got the W7 PRO 64-bit Lenovo 'package'. 

 

It seemed like there could be a very straight forward REGISTRY EDIT that would accomplish it. I wasn't interested in 'tinkering'!!!

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2 Posts

01-11-2019

CA

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Re: T440 20B7 Touchpad not working

2019-01-12, 2:31 AM

I suspect you're right... if I get into a tinkering mood I may have a look at how the registry compares in the driver section as I kept a copy for just that reason.

 

When searching the Internet for solutions came upon a lot of people with various brands with the same type problems but all use the Synaptic driver and Windows 10,

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1 Posts

02-17-2019

PK

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Re: T440 20B7 Touchpad not working

2019-02-17, 8:54 AM

Restart the Laptop , its worked for my case. Hope it will fix it.

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2 Posts

04-25-2019

HU

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Re: T440 20B7 Touchpad not working

2019-04-26, 10:23 AM

During installation only trackpad top left and right click zones working, use them together with the trackpoint.
Connect to internet, allow the OS to update device drivers.
Wait until OS installs driver in the background for the Synaptics Pointing Device, and asks for restart. Reboot.
In the Device Manager under System Devices there will be a Synaptics SMBus Driver Device, with driver ver. 19.0.17.115 / 19.09.2016

 

Right click on this "Synaptics SMBus Driver Device", choose "Uninstall device", tick "delete the driver software for this device" checkbox.
Click on Uninstall button. After deleting this device your touchpad immediately, without reboot should start to work.


The "Synaptics SMBus Driver Device" will not appear again in Device Manager, nor after reboot(s).
Now, at this point you can update driver with gggr05ww.exe to 19.0.17.140 / 14.12.2018, but it's not really neccessary.

Tested on T440 type 20B7, with W10 version 1809.

 

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8 Posts

10-26-2015

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Re: T440 20B7 Touchpad not working

2019-04-26, 20:35 PM

I did the update driver, deleted the System Device as suggested, restarted and ended up with only 'touchpad only' option in the 'drop-down'. I hadn't tinkered with this for several weeks. I may just attempt a 'FRESH START' and see what goes on. Your suggestion certainlt accomplished enabling the touchpad for mouse but all else is gone!

 

 

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2 Posts

04-25-2019

HU

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Re: T440 20B7 Touchpad not working

2019-04-26, 22:10 PM

I made a fresh OS install. When installation completes follow the next steps :

 

1. Wait until Windows 10 installs and updates drivers, and sends a notification about restarting in relation with Synaptics Pointing device

2. Reboot only once!

3. After reboot, remove only the above mentioned  Synaptics SMBus device together with it's driver (tick checkbox). This is the point, where both the trackpoint and the touchpad should work, without reboot!

4. When both device works, then you may reboot again, and should update the driver with the Lenovo one.

 

In your case, you shouldn't have to reinstall the complete OS. Simply remove the "Synaptics Pointing Device" and "Synaptics SMBUS Driver Device" from the Device manager. Check remove driver file checkbox at both. Reboot once, and the OS should recognize the trackpoint and the touchpad as a new hardware. Wait until the notification about restarting, reboot once and continue from step 3.

 

Update : the same solution works in Windows 7, similar way. The OS detects the touchpad as PS/2 compatible mouse.Use Lenovo System Update, download Synaptics Ultranav Driver 18.0.7.119 / 07.11.2018, and install it. Reboot once, remove Synaptics SMBus Driver Device and you're done.

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