were without keyboard and touchpad after Debian update

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were without keyboard and touchpad after Debian update

Postby Luiz1965 » 2020-08-05 18:33

Hello everyone!

My notebook is an Acer E5-511, 4G from Ram, Intel Celeron N2940 Bay Trail processor.

Debian KDE was running normally, with everything working, until this last version update, when it went to version 10.5.
When I restarted the machine, I ran out of keyboard and touchpad.

The interesting thing is that if you start the machine, in a LIVE session, with ISO 10.4 everything will work perfectly again. In version 10.5 only with USB mouse and keyboard, as these work normally.

Someone could give me a light, because I have no idea how to fix it.

In time...
As I couldn't solve it, I installed Void - also because I was curious about this distro. Everything worked perfectly until I updated ... As soon as I finished the update and restarted the machine ... Guess what ... I ran out of keyboard and touchpad.
So I went back to Debian
Last edited by Luiz1965 on 2020-09-13 21:49, edited 3 times in total.
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Re: I WERE WITHOUT KEYBOARD AND TOUCHPAD AFTER DEBIAN UPDATE

Postby Head_on_a_Stick » 2020-08-05 19:11

Please replace the capitals in the thread title with something less shouty then try the old kernel version and see if that works.

Also check that the running kernel version matches the available modules (/lib/modules/).
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Re: I WERE WITHOUT KEYBOARD AND TOUCHPAD AFTER DEBIAN UPDATE

Postby Luiz1965 » 2020-08-05 21:23

Head_on_a_Stick wrote:Please replace the capitals in the thread title with something less shouty then try the old kernel version and see if that works.

Also check that the running kernel version matches the available modules (/lib/modules/).


It worked with the previous version of the Kernel.
Thank you very much
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Re: I were without keyboard and touchpad after Debian updat

Postby Head_on_a_Stick » 2020-08-06 15:50

That was a test rather than a solution, using an outdated kernel version is unwise.

Do you have the modules for the newer kernel? Can we see the journal contents for a boot in which the keyboard doesn't work? You'll have to enable persistence first though.
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Re: I were without keyboard and touchpad after Debian updat

Postby Luiz1965 » 2020-08-09 17:47

Sorry for the delay in replying, I hadn't seen your post.
I appreciate your interest in helping, but your guidance is impractical at this time.
I even tried, but everything seems to be in Klingon to me.
I found it strange that a kernel downgrade worked, since the Void kernel is more recent than the Debian kernel, and it was the same with openSUSE 15.3. All the results were the same, that is, after the update, I have no keyboard and touchpad.
Anyway in the future, when I understand what each kernel module represents ...
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Re: I were without keyboard and touchpad after Debian updat

Postby stevepusser » 2020-08-10 04:39

It might be a bug in the current 4.19.0-10 Buster kernel, then, worthy of a bug report to Debian.
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Re: I were without keyboard and touchpad after Debian updat

Postby Luiz1965 » 2020-09-13 21:47

I managed to find my laptop bug.
As Debian 10.4, Void and openSUSE worked, but as soon as the kernel was updated it was without a keyboard, I opened a request in openSUSE's Bugzilla, and the engineer who guided me, after a zillion requests, discovered the person responsible for the bug: is the xf86-input-libinput drive.
When I disable it, another driver, 'evdev', assumes keyboard support, and as a result, I have the laptop's internal keyboard working again.
For the engineer this doesn't make much sense, but how to refute the fact that the xf86-input-libinput driver when active leaves me without a keyboard, and when inactive, the keyboard works again.
I don't know if this solution works for Debian, and for Void ... But maybe it will help someone.
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Re: were without keyboard and touchpad after Debian update

Postby Luiz1965 » 2020-09-21 19:26

It seems that I found another solution, one that applies to Debian.
https://forums.opensuse.org/showthread. ... d-from-DVD
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