Motile m142

CPU
The CPU is an AMD Ryzen 5 3500U with four cores.

Graphics
The CPU provides Radeon Vega Mobile graphics, which claims 2Gb of main memory for video. Follow the instructions in the AMDGPU article.

Wireless
The AC3168NGW wifi works with kernel version 5.4 and 4.19, but DOES NOT work with version 5.5 or later. The simplest way to use the more recent kernels is to delete the /usr/src/linux/drivers/net/wireless/intel/iwlwifi/ directory, and copy the corresponding directory from the gentoo-sources 5.4.15 package.

https://gitweb.gentoo.org/repo/gentoo.git/tree/sys-kernel/gentoo-sources/gentoo-sources-5.4.15.ebuild

The disable wireless key (Fn-F4) works through uefi and does not require kernel support.

Sound
The laptop features AMD/Realtek HD audio.

Configure ALSA with the following driver settings:

Touchpad
The laptop's touchpad will probably be a Tongfang model, similar to Elan touchpads, and may not be detected by system tools, including lspci.

To enable it, use the following kernel configuration settings:

Keyboard
Keyboard backlight adjustment is handled through uefi, and does not require kernel support.