Yaien
Posts: 1
Joined: Wed May 05, 2021 7:08 pm

wireless logitech k400+ Keyboard won't work with ubuntu 20.04

Wed May 05, 2021 7:18 pm

Hello,
Im new to the raspberrypi.
I installed ubuntu 20.04 and set the resoultion to 4k in /boot/config.txt as discribed in the raspberry doku.
After rebooting my keyboard wont work (logitech k400+), i can enter my password, i can enter letters in the ubuntu search and i can use my thouchpad.
But i cant use my keyboard zo interact witch other programs, i tried the terminal, firefox, libreoffice.
I rebooted the system and got the same issue again, so i tryed the displaykeyboard, but it wont prompt up if i click on textfields.
Other thinks i also tried are installing ibus and updateing the system.

I cant figure out why i got this issue.
Does someone have an idea?

pwillard
Posts: 21
Joined: Wed Aug 22, 2012 1:55 pm

Re: wireless logitech k400+ Keyboard won't work with ubuntu 20.04

Thu May 13, 2021 3:49 pm

You are not alone

I have the exact same issue. Quite annoying.

Bart31f
Posts: 2
Joined: Fri May 14, 2021 10:07 am

Re: wireless logitech k400+ Keyboard won't work with ubuntu 20.04

Fri May 14, 2021 10:12 am

Same here with Logitech Wireless K235

blade777
Posts: 23
Joined: Thu Oct 29, 2020 2:49 am

Re: wireless logitech k400+ Keyboard won't work with ubuntu 20.04

Fri May 14, 2021 9:11 pm

it`s a logitek issue try with a gigabyte or micro soft...the driver is not up to scratch in my op kernel module whatever..

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HawaiianPi
Posts: 6340
Joined: Mon Apr 08, 2013 4:53 am
Location: Aloha, Oregon USA

Re: wireless logitech k400+ Keyboard won't work with ubuntu 20.04

Fri May 14, 2021 9:37 pm

Are you using any USB 3.0 devices (USB 3.0 is known to interfere with 2.4GHz wireless, which is a common frequency for wireless dongles, and is used by the Logitech Unifying products). Note that this is not a Pi specific problem (happens on other computers as well).

I had a similar problem running RPiOS on my USB 3.0 SSD booted 4B2 and fixed it by placing a short shielded USB 2.0 extension cable between the Pi and Unifying dongle.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

pwillard
Posts: 21
Joined: Wed Aug 22, 2012 1:55 pm

Re: wireless logitech k400+ Keyboard won't work with ubuntu 20.04

Sat May 15, 2021 1:24 pm

If I switch out the OS for the latest Raspbian 32 Bit, everything works just fine so I'm less inclined to conclude it's a hardware issue and more of an issue with Drivers for the Logitech Unifying Software. If I switch out the wireless keyboard with a NON-Logitech brand, it is also fine (Example: Microsoft Wireless... though mouse lag is unbearable, it does work).

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HawaiianPi
Posts: 6340
Joined: Mon Apr 08, 2013 4:53 am
Location: Aloha, Oregon USA

Re: wireless logitech k400+ Keyboard won't work with ubuntu 20.04

Sun May 16, 2021 12:45 am

pwillard wrote:
Sat May 15, 2021 1:24 pm
If I switch out the wireless keyboard with a NON-Logitech brand, it is also fine (Example: Microsoft Wireless... though mouse lag is unbearable...
Unbearable lag is one symptom of USB 3.0 interference. Are you using any USB 3.0 devices?
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

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