Fujitsu Lifebook E734 keyboard problem

Hardware Support
1

Hello, I installed Zorin (the latest available version) and updated it, but on two Fujitsu Lifebook E734, the keyboard doesn't work properly. Many keys send incorrect inputs. I installed Zorin for an NGO to convince my director, but it's not working. How can I find the correct keyboard driver?

Thank you

2

Welcome to the Forum!

So, the Keyboard itself is working with all Kyes but the Inputs are not correct. Are there only some Key Input that are not correct or doesn't all Inputs fit? What Keyboard Layout is set up? You can check Settings>Keyboard to see if it is properly chosen.

3

Welcome to the forum.

Which keys are giving wrong output? This will give us a clue to better help you.
Are you seeing numbers instead of alphanumeric?
Is the numeric pad using alpha keys selected by accident? See this: Weird keyboard configuration in Zorin 15.3 (32-Bit)

In your case it could be:

numeric
numeric649×331 230 KB

4

20260217_133629
20260217_1336291920×1440 166 KB

it's the keyboard, half right is false

5

solution

Fujitsu Lifebook E734 — Keyboard wrong keys fix on Zorin OS

Root cause: The PS/2 keyboard controller (i8042) on Fujitsu Lifebooks initialises incorrectly under Linux, causing keys to send wrong inputs. This is a well-known issue across the entire Lifebook E series.

Step 1 — Test first without changing anything

At the GRUB boot menu, press E to edit the boot entry, find the line starting with linux, and add at the end:

i8042.nomux=1 i8042.reset

Press Ctrl+X to boot. If your keyboard works correctly → go to Step 2 to make it permanent.

Step 2 — Make the fix permanent

bash

sudo nano /etc/default/grub

Find this line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Change it to:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nomux=1 i8042.reset"

Then apply and reboot:

bash

sudo update-grub
sudo reboot

Still not working? Try these variants

bash

# Variant 1 — add notimeout
"quiet splash i8042.nomux=1 i8042.notimeout i8042.reset"

# Variant 2 — disable PNP detection
"quiet splash i8042.nomux=1 i8042.nopnp"

# Variant 3 — full combination
"quiet splash i8042.nomux=1 i8042.reset i8042.notimeout i8042.nopnp"

Each time: sudo update-grub && sudo reboot

Special case — numbers instead of letters

If certain keys type numbers instead of letters, the virtual numpad is accidentally active. Press Fn + Num Lock to disable it. Also check Settings → Keyboard and make sure the correct layout is selected.

Verify the fix was applied

bash

cat /proc/cmdline
# Should show: ... i8042.nomux=1 i8042.reset ...

dmesg | grep -i "i8042\|keyboard"
# Should show: AT Translated Set 2 keyboard with no errors
1 Like
6

What was the solution for you? In your last post there are several suggestions.

7

step 1 and to 2.

3 Likes