10-31-2018 09:50 AM
Today I updated BIOS to 1.38 version and then my touch screen was suddenly gone.
I read all related posts here and now I am convinced that it is the problem because of the BIOS update.
Because I am using my X1 Yoga as a touch machine for my work, I checked right after my BIOS update and it is not working.
I tried downgrade and windows rollback but it did not turn back.
My warranty is over but it is not my fault for sure. In this case how can I fix my touch screen?
10-31-2018 11:01 AM
10-31-2018 02:56 PM
My X1YG1 is at 1.38 and the touch screen is fine - so it isn't a universal issue.
Have you tried booting a live Linux USB flash drive to verify that it's a BIOS/hardware issue and not something to do with the OS or drivers?
I just now tried a quick test with Ubuntu 18.10 on flash and the touch screen basics work OK, so it should be a valid test.
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11-01-2018 08:40 AM
I have the same problem. I don't remember exactly after which update it happened. I only remember that in the release notes of that update was only one fix: something about the windows home button not registering properly.
Since then there's no touch screen in Device Manager either. Also the pen is not available anymore. The touch screen simply doesn't exist as far as Windows is concerened.
It seems Lenovo officially doesn't acknowledge this problem at all and it is a severe problem.