Thinkpad T540p replaced touchpad without fingerprint reader not working
Thinkpad T540p with problematic touchpad. 75% of the time it would only provide right click action (from both left and right clicks). Keypad had some issues with keys not working properly on rare occasion. Originally this laptop had the fingerprint reader. The replacement parts came from a T540p with broken screen that has been stripped for parts. Parts have not been tested. Installed the keypad and touchpad replacements, and they keypad works great! The trackpoint doesn't work at all, and neither does the touchpad. Everything is still enabled in the BIOS. I have removed the device for the synaptics touchpad and scan for new hardware, but nothing is ever detected.
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Double check the connection where that ribbon cable goes in. You have to slide the plastic piece in place to lock it down. It may be loose or the cable itself may be damaged.
i saw several posts with this problem, so - test if it works with a live ubuntu cd :
https://ubuntu.com/tutorials/try-ubuntu-before-you-install#1-getting-started UBUNTU live
https://ubuntu.com/tutorials/try-ubuntu-before-you-install#1-getting-started UBUNTU live
ASKER
I will test with Ubuntu asap.
I reseated all cables as first attempt to determine problem before posting online.
The old touchpad about 75% of the time would act as a right click for both the right and left click physically.
Keypad worked most of the time, but not always. The replacement keypad works 100%.
I reseated all cables as first attempt to determine problem before posting online.
The old touchpad about 75% of the time would act as a right click for both the right and left click physically.
Keypad worked most of the time, but not always. The replacement keypad works 100%.
ASKER
Trackpoint (seperate cable from keypad) and touchpad (no fingerprint reader) are not detected in Ubuntu and neither therefor work.
then the conclusion is a BAD trackpad
ASKER
But why does the trackpoint not work either, and that is part of the keypad?
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ASKER
As I mentioned before, nothing in device manager for these devices.
and no other errors ? why not post a screenshot? snipping tool does it...
but it looks like a bad mobo, since neither windows, nor ubuntu recognised it
but it looks like a bad mobo, since neither windows, nor ubuntu recognised it
ASKER
Not worth the money to stick more parts into this laptop. We have the new laptop on order for the client. Thanks to everyone for your suggestions.
i'd say bring it to me for inspection - but it is a bit far ...i think
ASKER
LOL, it is a bit far for me to drop it off. I have been working on computer hardware for 25 years. I am used to be the guying that gets these questions. But it is nice to have people like you (nobus) that share knowledge and an interest in helping others. Lenovo suspects it is a bad motherboard. I will save the touchpad for a future T540p repair (I support probably 60-70 still in service).
that' s what i have been doing my whole life - now on a smaller scale ( family etc)
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This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.
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What was the issue with the original parts? Why did you replace the keyboard and touch pad)??