Page 4 of 4

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Mon Feb 17, 2014 5:13 am
by Jessie
I've been useing this KB since the 256 MB rev1 days and never had issue with any distro. I have only ever had one app not like the touchpad and I emailed the dev and he was nice enough to fix it two days later.

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Mon Feb 17, 2014 5:11 pm
by camillo777
Hi I am using RaspBMC and it works ok!
The only problem is (do not know if it is solved now) after a reboot sometimes the communication between the keyboard and the Pi is not working; the solution is to reboot the Pi again (unfortunately by removing USB power).
Camillo

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Fri Oct 17, 2014 1:12 am
by joshebosh
Anybody have an answer for this one?
When I'm in X Window environment I the keys and mouse work normal,
When I log out and go to command line:

I get the UK pound (look like crooked L) on my shift+3 key and
when I type the backslash (\) key i get octothorpe (#) instead
and when I shift the same key for pipe (|) I get tilde (~) instead...

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Sat Oct 18, 2014 12:31 pm
by rparslow
joshebosh wrote:Anybody have an answer for this one?
When I'm in X Window environment I the keys and mouse work normal,
When I log out and go to command line:

I get the UK pound (look like crooked L) on my shift+3 key and
when I type the backslash (\) key i get octothorpe (#) instead
and when I shift the same key for pipe (|) I get tilde (~) instead...
sounds like you don't have the correct keyboard map picked, run raspiconfig and change to another one.

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Sat Oct 18, 2014 2:17 pm
by joshebosh
i've changed to several different key board types from usa to Uk english types, chose subtypes, even changed around the driver types like the generic 101,,4,and 5, and tried a few logitech cordless types.... i used:

Code: Select all

sudo dpkg-reconfigure keyboard-configuration 
to do it... i will try what you suggested...

..sometime later...

I'm using raspbian, and raspiconfig doesnt seem to present, nor did apt-cache search turn up any results... hmmm.... might have to try some individual key remapping...

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Sun Jan 18, 2015 9:31 am
by Hannuh
Hello,

I'm running the latest version of OpenELEC (5.0.0) on Raspberry Pi B+. The keyboard and touchpad on K400 seems to work fine. Just plugged in the usb dongle and then turned on the power.

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Sun Mar 01, 2015 6:24 pm
by sgriffith63
I have experienced no problems with the Logitech K400r keyboard on my PI 2. Try various keyboards in rasp-config.

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Mon Mar 23, 2015 12:43 am
by kcallis
I'm curious about which wireless keyboard should I pick when I change the keyboard to US? Unfortunately, no one added the K400 in the lineup?

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Wed Apr 15, 2015 11:33 pm
by soonerfan77
No issues with the K400 in the US on a PI 2 B ver 1.1 and raspbian.
Paired keyboard on laptop prior to trying on pi
Set keyboard to US logitech itouch

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Sat Jul 25, 2015 4:23 am
by poppy42
Work as soon as plugged in the receiver and turned the keyboard on. Everything should work this easy.

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Thu Aug 13, 2015 3:28 am
by JFamily
I've been using this keyboard for nearly 2 years on my windows media pc with no issues. Seriously, just changed the batteries for the first time last week. It is a very durable keyboard, we've knocked it off the couch or tables more than we could count. That said, the right click button has become very stubborn.

Plugged it in to my new Pi2 and it worked instantly. I have noticed 1 and possibly 2 problems:

1. Everytime I reboot the pi, I have to unplug the dongle and plug it back in. Pretty annoying. Infact, I found this thread while searching for a fix -- any tips would be appreciated!!
2. I'm not sure if the F1-12 keys work or not. I've only tried it while experiencing the kodi exit bug and attempting to switch to a console and keep forgetting to try it outside of kodi.

I had the problems that others have experienced (special keys resulting in the wrong symbols). This was fixed by generating and selecting the utf-8 keymap in raspi-config. Really wish someone would write a driver for it and merge it in, maybe that would fix the issue I'm having... I only read the first and part of the second page so far.

RasPi 2, turbo mode, 2 overvolt
Raspbian most recent build
5v 2A switching power supply
Fully functional keyboard (still need to test the fn keys)
Fully functional (multitouch!!) touchpad
Have to unplug and reseat the dongle at every reboot

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Sun Nov 20, 2016 9:41 pm
by stefy20026
k400 plus it works like normal keyboard (italian in my case) with 1 difference alt f4 (close window) is fn alt f4, ctrl alt f1 is fn ctrl alt f1 , for example if i press f3 switch windows, f4 open menu, according with symbols on the key.

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Sat Feb 24, 2018 2:30 pm
by mixup
(Newbie) Yes, Logitech K400+ (German keyboard layout), worked straight out of the box, keyboard and track pad. I had the Pi booted up normally with a wired USB mouse and keyboard and just unplugged them, plugged the logitech "inifying receiver" into a Pi USB port, switched on the keyboard and I am now free from the desk :-)

Re: Logitech Wireless Touch Keyboard K400: Does it work for

Posted: Thu Jul 26, 2018 11:11 am
by jgeving
I chose the Generic 104 keyboard with the US English option. Cleared up the issue described below.

Nr90 wrote:
Fri Jul 06, 2012 12:04 pm
hellguide wrote:The @ key shows up as ", and the # key shows up as UK Pounds(as in money). Is anyone else having this issue with this keyboard and Debian squeeze?
The keyboard is set to UK.
I changed mine to US with euro on 5.

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Sat Jan 19, 2019 7:02 pm
by wh7qq
The K400 worked out of the box on US English keyboard setting from Raspbian. I had some minor mix-up with the 105 key selection and reverted to the 101 and was ok. The thing that fooled me the worst was the stupid packaging arrangement: The development team designed a nice holder for the USB dongle in the battery compartment lid which is where you would logically look for such a device but the packaging engineering team just had to come up with something different and hid the USB dongle in the lid of the cardboard box, under a flap of opaque mylar tape that concealed it very well. I thought I had a keyboard with no way to connect to the RPi...much like a stone in the backyard.

I am not used to the touchpad for pointing...spoiled forever by a Logitech UltraX keyboard (out of print) and a M325 wireless mouse. Otherwise, it seems to be a nice little keyboard. Dam# Logitech for dropping the UltraX...I was able to score 2 more from eBay but they are really scarce, especially in the USB variant. The feel on the UltraX is fantastic and they seem to last forever (I hope).

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Sun Jan 20, 2019 1:36 pm
by alphanumeric
I've never had any problems using my K400 with Raspbian. I often move it from one Pi to another. The pairing with the Unifying dongle stays regardless of what device its used with. It should be already linked to the dongle that comes with it. I've linked and unlinked devices to my dongles in the past. Usually its unlinking a keyboard from a mouse keyboard combo, and then linking it to the dongle for my trackball. I do all that from my Windows box. My K400 is an English US layout and setting it to that gets all my keys working just fine.

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Wed Sep 04, 2019 1:05 am
by wjcroft
K400 Plus works, but two finger scrolling does not

Hi, this same K400+ works fine on Windows with the two finger scrolling. I assumed it was emulating a mouse wheel.

On my Raspberry Pi 4, however, the two finger scrolling does NOT work. All other features are fine.

I've tried using the Raspbian Mouse and Keyboard Settings with various selections of Keyboard Layout set to different Logitech models. None seem to turn on the two finger scroll.

Would appreciate hearing from anyone who has this working, is it some magic Keyboard Layout that I have not tried?

Regards, William Croft, OpenBCI

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Wed Sep 04, 2019 1:06 pm
by alphanumeric
I have a K400 (not the +) and two finger scroll is working for me in Buster on my Pi 4B. Double click doesn't want to work when trying to open some files though? I have to right click etc to open a text file.

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Wed Sep 04, 2019 5:50 pm
by wjcroft
Alphanumeric, hey thanks. I think I figured out what is going on. Two finger scroll is working for me now also on the K400+.

When it was NOT working, I had previously configured the K400+ with the Logitech utility on my Windows machine (to turn off the left click on tap feature, ONLY, no other changes). As long as that 'configuration' was active in the K400+ firmware, the two finger scroll was broken on Raspbian, but working on Windows. I only have a single dongle that I move back and forth.

By chance I had turned off the K400+ power switch for some hours that evening. After turning it back on, the K400 apparently reverted to it's default state. Now the two finger scroll (and tap for left click) are both working on Windows and Raspbian. Very odd, but welcome.

I guess the power switch must be on to retain any configuration changes. Is that your experience also?

Regards, William Croft

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Wed Sep 04, 2019 7:56 pm
by alphanumeric
I turn mine off if I know its not going to be used for a while. I haven't done any special configuration changes, I pretty well just use it as it came out of the box.

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Wed Sep 04, 2019 8:08 pm
by wjcroft
Thanks. Just found this other trick with the K400+: You can disable/enable/toggle the tap-to-click feature of the keyboard, using this undocumented key combination. This works without using the "Logitech Options" settings control program on Windows. Exactly what I need for Raspbian.

The tap-to-click ability is toggled by holding the FN (function) key in the lower left area, then pressing the left click button on the trackpad. Perfect.

William Croft

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Wed Sep 04, 2019 10:11 pm
by HawaiianPi
There is software in the Raspbian repos called Solaar (sudo apt install solaar) that allows you to pair and unpair the Logitech Unifying products, as well as configure some keyboard options (like toggling the FN+F key functions).

If you've had the older K400 models for awhile now, you might want to check for a firmware upgrade with the Windows Unifying utility, as there was a fix for a vulnerability from a few years ago (Solaar doesn't do firmware).

My K400r has worked great for me on several Pi models and Raspbian versions.

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

Posted: Thu Sep 05, 2019 1:41 am
by wjcroft
HPi, thanks.

I had come across the Solaar before, have not tried it yet. Here's a page, which claims that most Logitech keyboards, in addition to the FN+LeftClick toggling of the tap-to-click feature -- also support FN+ESC to toggle the operation of the F1 thru F10 keys. In the default mode they are sending the media center commands. When switched, they just send the raw F1 to F10 escape codes. I do understand Solaar can control this also, but cool if the keyboard hardware itself can do it with a simple FN+ESC.

https://en.code-bude.net/2017/09/02/cha ... -software/

HOWEVER, when I tried that FN+ESC combination here with my K400+, the Raspberry Pi 4 turned off the display entirely. Window system vanished, stopped feeding display signal, monitor turned off. It almost looked like it went into some kind of Suspend mode. Which is what FN+ESC does on some laptops. I could not get out of it, and had to power down / back up again.

Any idea of what FN+ESC does with Raspbian? I did a bunch of web searches but could find no clues. The page above assumes it is just interpreted locally by the Logitech firmware. But apparently on the K400+, it is sending a modified escape code to Raspbian, which trigger a mysterious action.

Regards, William