I tried on Chuwi Lapbook SE Ubuntu Mate 18.04 (i don’t remember the kernel version at the moment) in live by usb. All the peripherals seem to work excluding the webcam as you said. I only have same troubles with pinch-to-zoom, it does not seem to work!!! Do you have the same problem?
I’ll Recive my teclast f7 on tuesday and, First or all, i Will install Ubuntu! I Will try to replace the kernel with this One… I’ve a question: “subsequently, can i upgrade the kernel?”