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Odd driver issues after replacing keyboard

W530/W540/W541/W550 Series
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Weboh
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Odd driver issues after replacing keyboard

#1 Post by Weboh » Wed Sep 21, 2022 10:55 am

I had a few dead keys on my keyboard, so I replaced it. It was a simple hardware swap that is now giving me a headache with software issues.

The new keyboard is a drop-in replacement. It works perfectly without any new drivers. It's what I'm typing this post on. However, the keyboard has a trackpoint in it that suddenly decided it's a different model.

About a year ago, I replaced the clunkpad that originally came with the W540 with a nicer one with physical buttons that comes standard on the T440. After installing the proper driver, it worked fine. After installing this new keyboard, the computer views the trackpad as the old one. I reinstalled the driver that worked fine for the past year, but no dice. I tried four other drivers for that trackpad, too, but they install the control panel applet for the one that came standard with the computer and make the trackpoint jump around and click on random things.

What could be causing this? The trackpoint works almost perfectly with Windows 8.1 default generic driver, so it doesn't seem to be a hardware issue, even though it only showed up after switching hardware. I've wasted hours on this. Any advice? Thanks.

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Re: Odd driver issues after replacing keyboard

#2 Post by RealBlackStuff » Wed Sep 21, 2022 12:42 pm

The xx40 has a clunkpad, to be replaced with a touchpad+buttons from the xx50 series.
You need an xx50 driver.
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, M900 Tiny (all with W7/SP1)

Weboh
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Location: Saint Petersburg, FL

Re: Odd driver issues after replacing keyboard

#3 Post by Weboh » Wed Sep 21, 2022 9:10 pm

Thanks. I just reinstalled the one for the T450 direct from Lenovo https://pcsupport.lenovo.com/us/en/prod ... 0and%20Pen. It still installs the clunkpad driver
Image
What could be causing this? It worked perfectly for a year with the old driver!

Weboh
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Location: Saint Petersburg, FL

Re: Odd driver issues after replacing keyboard

#4 Post by Weboh » Wed Sep 21, 2022 10:57 pm

Okay, I've now tried nine (9) different drivers. Most of them claim to be for a trackpad but are actually for the clunkpad when I install them. The original one I used has a control panel applet that doesn't load and works as well as the clunkpad drivers now. I found one that I know works with this model, and the control panel applet loads and shows that. HOWEVER, it doesn't recognize the touchpad at all! This is beyond frustrating. Here's a screenshot of all the different drivers I've tried. Maybe I missed one? I also tried using Lenovo's update tool and service bridge tool directly to get more drivers from there. No dice. :(
Image

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Re: Odd driver issues after replacing keyboard

#5 Post by RealBlackStuff » Thu Sep 22, 2022 12:21 am

Do you have an Alps or Synaptics touchpad+buttons?
Have you seen this? viewtopic.php?f=68&t=126860
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, M900 Tiny (all with W7/SP1)

Weboh
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Re: Odd driver issues after replacing keyboard

#6 Post by Weboh » Thu Sep 22, 2022 4:20 am

Pretty sure I have Synaptics. The driver that worked until it didn't was a Synaptics driver, and the installing the Alps drivers leaves me with a dead trackpad.

I took a look at that thread and tried the fixes. I downloaded the driver you recommended and made the changes you said to make. It still installed the clunkpad driver. Tried the same thing with the Alps driver just in case and it still killed the trackpad. The original driver stayed the same after replacing those lines, too.

Any other ideas? I'm amazed at how much knowledge you have!

Weboh
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Re: Odd driver issues after replacing keyboard

#7 Post by Weboh » Thu Sep 22, 2022 8:58 am

Okay, I did some more troubleshooting and found out the trackpoint does work with the last driver I installed--if I use the old keyboard. Not sure why. The keyboard I got is supposed to be compatible with 540 and 550 models, so it should support both kinds of trackpads. The old keyboard was from an E540 and supported both.

What would you recommend I do? Is there a new keyboard driver I could install or something? Thanks.

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Re: Odd driver issues after replacing keyboard

#8 Post by RealBlackStuff » Thu Sep 22, 2022 10:33 pm

Your problem seems to be the (no-name knock-off) keyboard.
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, M900 Tiny (all with W7/SP1)

Weboh
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Re: Odd driver issues after replacing keyboard

#9 Post by Weboh » Fri Sep 23, 2022 3:25 am

Right. :P Anything you would recommend to fix the problem beyond getting another new keyboard? That keyboard should be compatible; it was at least advertised as being so. I don’t know how I would get another keyboard that was more compatible, and I’d rather not bother if there’s some software fix I can do.

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Re: Odd driver issues after replacing keyboard

#10 Post by RealBlackStuff » Fri Sep 23, 2022 4:05 am

The T540/W540 use the same Chicony or LiteOn, keyboards.
The E540 have different keyboards from T540/W540 (although also made by Chicony or LiteOn).
Don't forget that E-series are the low-life versions of proper ThinkPads.

Look in their frubom/parts lists to see the different P/N.
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, M900 Tiny (all with W7/SP1)

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