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dmm1
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Posts: 23
Registered: ‎07-09-2015
Location: US
Views: 2,258
Message 111 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

update:

 

I got my genuine Lenovo bezel/trackpad for the W541, installed it and the n10gw22w driver.  I got back all the trackpad controls, and perfoming the registry edit in message 97 activated the buttons.  It was very straightforward  (especially after all the practice of trying every driver and modification to get the trackpad from aliexpress to work).

 

The trackpad from aliexpress was junk, cost me inordinate amount of time, and so  even though others here have had good results, I recommend avoiding this source.  There is no recourse once you have paid your money.  No returns.  Buy from ebay or better yet lenovo.

 

Thanks again for all the support in this thread.

Bauden
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Posts: 527
Registered: ‎02-24-2014
Location: AF
Views: 2,139
Message 112 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

Indeed, Lenovo should send a free W541 touchpad to all W540 owners that request it.........  <g>.

dmm1
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Posts: 23
Registered: ‎07-09-2015
Location: US
Views: 2,117
Message 113 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad


@Bauden wrote:

Indeed, Lenovo should send a free W541 touchpad to all W540 owners that request it.........  <g>.

Agreed.  At least provide a working driver.  

 

- And as a flinux ollowup,  the 541 trackpad buttons work fine on Ubuntu 12.04 but not on Centos 6.6.   My guess is that the 2.x kernel isn't compatible.  Anyone else have any similar problems?

DaleEMartin
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Posts: 8
Registered: ‎03-01-2014
Location: Massachusetts
Views: 2,038
Message 114 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

I was using the replacement trackpad and registry change from LvlLord (message 97) successfully in Windows 8.1, and then Windows 10.  But this morning Windows update ran and upgraded the driver version to 19.0.17.27 and the buttons stopped working :-(

 

Everything else seems OK - the trackpoint itself, multitouch, etc.  Just the phsyical buttons stopped working - which of course, was the whole point of replacing the device. I reran the registry update "just in case" but no luck. Did anyone else experience this?  Is there a known fix?

 

Thanks

dmm1
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Posts: 23
Registered: ‎07-09-2015
Location: US
Views: 2,035
Message 115 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad


@DaleEMartin wrote:

I was using the replacement trackpad and registry change from LvlLord (message 97) successfully in Windows 8.1, and then Windows 10.  But this morning Windows update ran and upgraded the driver version to 19.0.17.27 and the buttons stopped working :-(

 

Everything else seems OK - the trackpoint itself, multitouch, etc.  Just the phsyical buttons stopped working - which of course, was the whole point of replacing the device. I reran the registry update "just in case" but no luck. Did anyone else experience this?  Is there a known fix?

 

Thanks


Did you try reinstalling the orignal driver that worked and going through your registry change again?

DaleEMartin
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Posts: 8
Registered: ‎03-01-2014
Location: Massachusetts
Views: 2,022
Message 116 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

I clicked "rollback driver" in the device manager, and then reapplied the registry change. It seemed to have no effect. I think last time I went through this process the machine was still running Windows 8.1, not Windows 10, if that makes a difference.

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ricmic
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Posts: 20
Registered: ‎11-09-2010
Location: DE
Views: 2,016
Message 117 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

Windows 10 update will continue to install synaptics updates, on my machines (W540 with W541 bezel & T440s with T450 bezel) the latest is dated November 24th...

When this happens, just run the registry fix

 

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SynTP\Parameters]
"ExtraCapabilities7Add"=dword:00010000
"ExtraCapabilities7Mask"=dword:ffffffff

 

reboot and everything is fine again.

DaleEMartin
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Posts: 8
Registered: ‎03-01-2014
Location: Massachusetts
Views: 2,005
Message 118 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

That had been the case for me as well until this morning. (I bought my replacement off of ebay, just the trackpad with buttons - not the whole bezel. It's been working great until this morning.)

In any case, I just rolled back to a restore point from before allowing Windows Update to run and it is working fine again. Looking at the driver version in Device Manager, it says that it is version 19.0.17.2 that is working well.

The two things I had allowed Windows update to install were a Synaptics Device Driver update, and "Upgrade to Windows 10 Pro, version 1511, 10586". I'm going to create a restore point right now before I consider allowing Windows Update to do anything else.
ricmic
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Posts: 20
Registered: ‎11-09-2010
Location: DE
Views: 1,996
Message 119 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

Hmmm,

 

I have the native Lenovo W541 bezel (FRU 00JT903, KBD,Bezel,FPR,CS)  in my W540...

Maybe a weird interaction between Trackpad, fingerprint reader and color sensor...

DaleEMartin
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Posts: 8
Registered: ‎03-01-2014
Location: Massachusetts
Views: 1,988
Message 120 of 150

Re: Replace a T540p Touchpad with a 3 button W541 Touchpad

Well, I don't know what happened. After I rolled back to the restore point, then I restarted Windows Update and let it do everything again. Before letting it reboot I reran the registry update one more time. This time when it booted back up the buttons were working again. I think maybe during the first attempt the Synaptics Driver did not install correctly? 3 hours and lots of messing around later, it looks like it was a spurious problem and I'm back in business. Sorry for all of the messages!

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