Arch Linux

seth

Member

Registered: 2012-09-03

Posts: 51,229

Re: built in PS/2 keyboard not working

The question is whether reloading the modules makes the keyboard immediately available.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

youzark

Member

Registered: 2022-02-14

Posts: 20

Re: built in PS/2 keyboard not working

[youzark@youzark ~]$ modprobe -r atkbd i8042; sleep 1; modprobe i8042; modprobe atkbd
modprobe: ERROR: could not remove 'atkbd': Operation not permitted
modprobe: FATAL: Module i8042 is in use.
[youzark@youzark ~]$ sudo modprobe -r atkbd i8042; sleep 1;sudo  modprobe i8042;sudo modprobe atkbd
modprobe: FATAL: Module i8042 is in use.

That's what I got with and without sudo , keyboard not work.

youzark

Member

Registered: 2022-02-14

Posts: 20

Re: built in PS/2 keyboard not working

youzark@youzark ~]$ lsmod | grep i8042
i8042                  45056  1 ideapad_laptop
serio                  28672  4 serio_raw,atkbd,i8042

should I remove dependencies before remove i8042?

seth

Member

Registered: 2012-09-03

Posts: 51,229

Re: built in PS/2 keyboard not working

You'll also have to unload ideapad_laptop, yes.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

youzark

Member

Registered: 2022-02-14

Posts: 20

Re: built in PS/2 keyboard not working

No , keyboard still not working after this command .

youzark

Member

Registered: 2022-02-14

Posts: 20

Re: built in PS/2 keyboard not working

Somehow I find this message in my journal .

Feb 22 10:50:00 youzark kernel: Unknown kernel command line parameters "BOOT_IMAGE=/vmlinuz-linux", will be passed to user space.

maybe the initramfs isn't loaded properly ,thus the keyboard is not detected . But I don't know how to fix this. Any suggestion? thanks.

seth

Member

Registered: 2012-09-03

Posts: 51,229

Re: built in PS/2 keyboard not working

Please post your grub.cfg, but on the surface, that's really just some bogus kernel parameter.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

youzark

Member

Registered: 2022-02-14

Posts: 20

Re: built in PS/2 keyboard not working

grub.cfg

seth

Member

Registered: 2012-09-03

Posts: 51,229

Re: built in PS/2 keyboard not working

No problem there, and the message is just because of https://lore.kernel.org/lkml/2021051121 … edhat.com/ - red herring.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

felixonmars

Developer/TU

From: Wuhan, China

Registered: 2011-04-15

Posts: 67

Website

Re: built in PS/2 keyboard not working

Just in case you haven't found a fix yet:

Someone asked me about a similar model of Ideapad having exactly the same issue. The following parameter works around it:

i8042.dumbkbd=1

Either add it to a bootloader or modprobe.d would work.

It might worth a try to add this to the kernel's quirk table but the kernel maintainers seem to be rather inactive for requests like this:

https://lore.kernel.org/lkml/2iAJTwqZV6 … evit.ch/T/

---

PGP key: 30D7CB92
Key fingerprint: B597 1F2C 5C10 A9A0 8C60  030F 786C 63F3 30D7 CB92

weltio

Member

From: Germany

Registered: 2009-04-05

Posts: 87

Re: built in PS/2 keyboard not working

I just hit https://bugzilla.kernel.org/show_bug.cgi?id=77391
Indicator: with kernel parameter i8042.debug=1:

Aug 14 08:34:00 archiso kernel: i8042: [608] MUX error, status is f5, data is fe
Aug 14 08:34:00 archiso kernel: i8042: [608] fe <- i8042 (interrupt, 5, 12, timeout)
Aug 14 08:34:00 archiso kernel: i8042: [608] 93 -> i8042 (command)
Aug 14 08:34:00 archiso kernel: i8042: [608] f2 -> i8042 (parameter)

The solution was kernel parameter: i8042.nomux=1

2ManyDogs

Forum Fellow

Registered: 2012-01-15

Posts: 4,645

Re: built in PS/2 keyboard not working

The OP has not been back since June 2022, so I am going to consider this thread abandoned and close it now.