Changes
* We've build example .deb kernel packages for Debian 10, missing device node will appear as /dev/ttyS2:
<pre>
# Download and install the kernel packages:
$ wget https://path/to/linux-headers-4.19.67-compulab.2019.09.11_4.19.67-compulab.2019.09.11-1_amd64.deb
$ wget https://path/to/linux-image-4.19.67-compulab.2019.09.11_4.19.67-compulab.2019.09.11-1_amd64.deb
$ sudo dpkg -i linux-headers-* linux-image-*
$ sudo reboot
$ cat /boot/config-4.19.67-compulab.2019.09.11 | grep CONFIG_SERIAL_DEV_BUS
# CONFIG_SERIAL_DEV_BUS is not set
$ sudo -i
$ echo "12345678" > /dev/ttyS2