Illuminated keyboard not lighting up with Mint Cinnamon 20.1 Ulyssa.

MissMonkeyMac · 07-01-2021, 03:37 AM

Hi. I bought a KUIYN illuminated keyboard and mouse which work fine with my Win10 install, but with my Mint Cinnamon install the keyboard doedn't light up. It will do until Mint finishes loading, then the lights go off and I can't get them back on again using the key that should turn them on. I am new to Linux at present. Can anyone help with this please? I need the illumination as the light where I am isn't great,

Thanks, MMM.

ondoho · 07-01-2021, 04:05 AM

Quote:

Originally Posted by MissMonkeyMac

Hi. I bought a KUIYN illuminated keyboard and mouse which work fine with my Win10 install, but with my Mint Cinnamon install the keyboard doedn't light up. It will do until Mint finishes loading, then the lights go off and I can't get them back on again using the key that should turn them on. I am new to Linux at present. Can anyone help with this please? I need the illumination as the light where I am isn't great,

Thanks, MMM.

My keyboard does something similar, however it has certain settings hotkeys that allow me to change the illumination mode. These settings are stored in the keyboard.
Consult your keyboard's manual first.

MissMonkeyMac · 07-01-2021, 04:43 AM

Quote:

Originally Posted by ondoho

My keyboard does something similar, however it has certain settings hotkeys that allow me to change the illumination mode. These settings are stored in the keyboard.
Consult your keyboard's manual first.

Hi, thanks. Yes I have done that and no difference.

ondoho · 07-02-2021, 01:45 PM

Then we need some output.

Please do this:

Quote:

You want to see how your Linux system reacts to a certain peripheral being plugged in (smartphone, monitor, USB stick etc.).

Code:

dmesg

can provide that information, but one needs to separate that from previous messages.
Here's how:

Make sure the device in question is unplugged.
Open a terminal, maximise it.
Enter
Code:
```
dmesg -w
```
or --follow (wait for new messages).
Some systems require elevated privileges for
Code:
```
dmesg
```
, if so prepend
Code:
```
sudo
```
or become superuser first.
After
Code:
```
dmesg -w
```
spat out lots of stuff and has hopefully settled down (if it hasn't that could point to a different problem), press <Enter> until your terminal window is blank.
Now insert the peripheral you want information about and wait a few seconds.
Copy all the new output that is visible now.

MissMonkeyMac · 07-02-2021, 08:37 PM

Quote:

Originally Posted by ondoho

Then we need some output.

Please do this:

Here is what it spat out after plugging in the USB keyboard. I had to plug in an old PS2 keyboard to do anything while the new one was unplugged, just in case that affects any of the output.

[ 341.967494] usb 3-4: new low-speed USB device number 4 using xhci_hcd
[ 342.121914] usb 3-4: New USB device found, idVendor=2a7a, idProduct=8a47, bcdDevice= 0.01
[ 342.121919] usb 3-4: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 342.121921] usb 3-4: Product: CASUE USB KB
[ 342.127005] input: CASUE USB KB as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.0/0003:2A7A:8A47.0002/input/input10
[ 342.184110] hid-generic 0003:2A7A:8A47.0002: input,hidraw1: USB HID v1.10 Keyboard [CASUE USB KB] on usb-0000:00:14.0-4/input0
[ 342.190775] input: CASUE USB KB Consumer Control as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.1/0003:2A7A:8A47.0003/input/input11
[ 342.247748] input: CASUE USB KB System Control as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.1/0003:2A7A:8A47.0003/input/input12
[ 342.247935] hid-generic 0003:2A7A:8A47.0003: input,hidraw2: USB HID v1.10 Device [CASUE USB KB] on usb-0000:00:14.0-4/input1

ondoho · 07-03-2021, 01:41 AM

Linux sees your keyboard as CASUE with vendor id 2a7a and product id 8a47.
I found nothing wrt backlight with these parameters, so I tried a more generic search - maybe this article can help.

MissMonkeyMac · 07-03-2021, 04:05 AM

Quote:

Originally Posted by ondoho

Linux sees your keyboard as CASUE with vendor id 2a7a and product id 8a47.
I found nothing wrt backlight with these parameters, so I tried a more generic search - maybe this article can help.

Thanks for your help with this. It is all a bit beyond me at present. Hopefully one day I will be able to make sense of all this.

biker_rat · 07-04-2021, 10:33 PM

Most linux distros will have a utility called xset. If your distro has xset, type xset in a terminal app in your graphical desktop environment and a help message spews out. Use trial and error for the led values if xset is present. Xset only works when X11 is running, so don't try it from console.The value 3 works with my keyboard.

MissMonkeyMac · 07-10-2021, 01:24 AM

Quote:

Originally Posted by biker_rat

Most linux distros will have a utility called xset. If your distro has xset, type xset in a terminal app in your graphical desktop environment and a help message spews out. Use trial and error for the led values if xset is present. Xset only works when X11 is running, so don't try it from console.The value 3 works with my keyboard.

Thank you. They all just seem to turn the led on, that's 1-32. But with it turned on via that method, the number pad doesn't work, whether num lock is on or not. Any idea about that one? If I have to open up a new thread, please let me know.

biker_rat · 07-11-2021, 09:22 AM

Install an old software called numlockx & try playing with that in conjunction with xset. If that doesn't help, I am out of tricks; and you need help from someone else who is more knowledgeable.

MissMonkeyMac · 07-12-2021, 12:09 AM

Quote:

Originally Posted by biker_rat

Install an old software called numlockx & try playing with that in conjunction with xset. If that doesn't help, I am out of tricks; and you need help from someone else who is more knowledgeable.

Your help is most appreciated. Thanks. I'll give that numlocks a try.