For Chipset 0x0c45:0x7603 The kernel reports the chipset as SONiX USB Keyboard

Written for the Perixx PX-1800 USB Keyboard. This software is forked from https://github.com/lolo101/px1800kbd.git

NOTE: Makefile and instructions are only tested on Ubuntu, however they are known to work on Debian.

First, make sure to have all the required packages to download and build the module:

sudo apt-get install git build-essential linux-headers-generic dkms

Then, download the sources:

git clone https://github.com/mgvel/px1800kbd.git

cd into the sources directory:

cd px1800kbd

At last, build the module. It is recommended to use DKMS to install the module:

sudo ./install.sh dkms

But you may also want to run a manual install:

sudo ./install.sh

NOTE: install.sh attempts to blacklist the driver for you. You shouldn't need to do anything manually. These instructions are to explain the process, in the event something goes wrong.

You need to blacklist the device from the generic USB hid module in order for the px1800kbd module to control it.

If the USB hid driver is compiled as a kernel module you will need to create a quirks file and blacklist it there.

You can determine if the module is a kernel module by running the following:

lsmod | grep usbhid

If grep finds something, it means that the module is a kernel module.

Create a file called /etc/modprobe.d/usbhid.conf and add the following to it:

options usbhid quirks=0x0c45:0x7603:0x00000004

For more information about quirks, see include/linux/hid.h.

If the generic USB hid driver is compiled into the kernel, then the driver is not loaded as a module and setting the option via modprobe will not work. In this case you must pass the option to the driver via the grub boot loader.

Create a new file in /etc/default/grub.d/. For example, you might call it px1800kbd.conf. (If your grub package doesn't have this directory, just modify the generic /etc/default/grub configuration file):

GRUB_CMDLINE_LINUX_DEFAULT='usbhid.quirks=0x0c45:0x7603:0x00000004'

Then run sudo update-grub and reboot.

grub2-mkconfig -o /boot/grub2/grub.cfg

reboot