Keyboard Key Dectection Inconsistency

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发帖于: 2026年4月9日

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Keyboard Key Dectection Inconsistency

I've been having a reoccurring problem where certain keys on my keyboard don't get detected when pressed, usually my entire 3EDC column and H key although other keys are sometimes affected. They usually stop working after a period of inactivity and most of the time I can get them to work again by repeatedly pressing the affected key. I am running Debian based Linux as my main OS but I do also experience this problem in Windows 11.

I'm just putting this out to see if anyone else was having this experience or knew of any fixes.

Lenovo yoga 7 2in1 14AHP9 (MTM : 83DK000FUS)

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I have the same problem on the same device (Lenovo Yoga 7 2in1 14AHP9) on keys z,x,c,v,h,j,k,l and the right half of the number row, and some other keys as well. Pressing the keys hard and repeatedly temporarily makes it work. But then sometimes it registers multiple keys instead of one. I have tried both on my Linux Fedora and Win 11 OS but to no avail. My suspicion is that when I have the laptop on Stand Mode (which I usually have the laptop set up most of the time), the keyboard is resting directly facing down my tabletop which places continuous mechanical pressure on the keycaps and the switches. I haven't tried cleaning the keycaps or reseating the ribbon yet.

Did you have the same probable cause? Were you able to fix it?

由 JR Valencia 完成的 2026年7月27日

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I have the same problem on the same device (Lenovo Yoga 7 2in1 14AHP9) on keys z,x,c,v,h,j,k,l and the right half of the number row, and some other keys as well. Pressing the keys hard and repeatedly temporarily makes it work. But then sometimes it registers multiple keys instead of one. I have tried both on my Linux Fedora and Win 11 OS but to no avail. My suspicion is that when I have the laptop on Stand Mode (which I usually have the laptop set up most of the time), the keyboard is resting directly facing down my tabletop which places continuous mechanical pressure on the keycaps and the switches. I haven't tried cleaning the keycaps or reseating the ribbon yet.

Did you have the same probable cause? Were you able to fix it? — JR Valencia

Tomáš Trejtnar @tomastrejtnar 声誉积分: 13 1 · Answer 1 · 2026-04-17T05:11:14-07:00

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Tomáš Trejtnar @tomastrejtnar

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发帖于: 2026年4月17日

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I had same issue with virtualy same device – keys not registered and then multiple inputs when pressed on Q to P row, alt and control keypress got "stuck". Ocured in Windows 11, Ubuntu and BIOS.

I have reseated ther keyboard ribbon cable and It got fine. Well on second time at least, after first it was in day back and even worse. I have notised that even if fully inserted ther ribbon cable is little bit tilted, so I would expect problem here. You need to remove back cover (little nasty plastic "stud", cover need to by lifted by some force), disconnect and remove battery.

But your problem could be same or one line of keyboard matrix dying. Good luck with that.

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I just tried cleaning and reconnecting the keyboard cable and unfortunately it didn't fix the issue. I also think it might be the keyboard matrix :(

由 Angus “Subie_Main” Fisher 完成的 2026年4月17日

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Rashmi Kandhil @rashmikandhil 声誉积分: 1 3 · Answer 2 · 2026-04-17T06:08:15-07:00

Rashmi Kandhil @rashmikandhil

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It looks like a hardware fault. Shut down, clean the keyboard with compressed air, and gently reseat the internal keyboard ribbon (if comfortable opening it). Update BIOS/firmware as a precaution. If the issue persists across both OSes, the keyboard assembly likely needs replacement. As a temporary workaround, use an external USB keyboard.

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I'll try updating the BIOS. I have been using a onscreen keyboard for the non functional keys but it sucks.

由 Angus “Subie_Main” Fisher 完成的 2026年4月17日

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Lenovo Yoga 7 2-in-1 14AHP9

Keyboard Key Dectection Inconsistency

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