I have 534d:6021 MacroSilicon VGA Display Adapter which I want to connect my third screen through my usb 3 port. However it has only windows drivers. How can I setup this adapter with a suitable driver on my ubuntu 22.04.
USB 534d:6021 »
/ 03-00-00 MacroSilicon VGA Display Adapter cdrom uas, usb_storage detected 
this is the output of hw-probe.
(I don't own the hardware so not completely tested)
cd Downloads
wget https://github.com/nunesbns/ms912x/archive/refs/heads/kernel-6-support.zip
unzip kernel-6-support.zip
cd ms912x-kernel-6-support/
sudo apt install -y build-essential
make clean
make all -j
sudo modprobe drm_shmem_helper
sudo insmod ms912x.ko
journalctl -k | grep ms912x
# expected output:
# Oct 12 12:59:56 hp-laptop kernel: usbcore: registered new interface driver ms912x
To install, run these commands...
git clone https://github.com/rhgndf/ms912x.git
cd "./ms912x"
These git commands allow you to clean up a previous installation and ensure you
have the latest version in case of reinstallations or tests.
git fetch --all
git reset --hard origin/main
git clean -fdx
make clean
make all -j
sudo rmmod ms912x # It will not work if the device is in use.
sudo insmod ms912x.ko
sudo modprobe drm_shmem_helper
IMPORTANT: Linux kernel 6.2.X (or above) is necessary, because of DRM support.
EXTRA: Necessary packages for Manjaro Linux yay -S linux65; yay -S linux65-headers; yay -S make; yay -S base-devel; yay -S binutils; yay -S libdrm; yay -S sparse; yay -S zstd. Ubuntu has equivalent packages (Kernel's ones, perhaps not).
... OR (simply)...
bash insmod.sh
Some commands to obtain information about your device (or about problems with it)...
lsusb -v
dmesg | grep -Ei "ms912x"
journalctl -k | grep -Ei "ms912x"
edid-decode < /sys/class/drm/<YOUR_DEVICE>/edid
cat /etc/X11/xorg.conf.d/10-prime-offload.conf
On Linux, the performance is UNACCEPTABLE and there are also compatibility problems.
Other than that the device claims to be USB 3.0, but it's just USB 2.0 .
NOTE: It didn't work with the KDE gui using X11 (I had to use Wayland that is immature). The distribution tested was Manjaro KDE.
Unfortunately, MacroSilicon is not interested in Linux users (a shame, really ), nor does it support important and valuable open source projects like this one ms912x driver for Linux.
Therefore, at the moment, my guidance is that Linux users use devices based on DisplayLink chips (manufacturer Synaptics). I tested the WL-UG3501H device, for example, and had excellent results. The manufacturer Synaptics provides good support for Linux drivers.
EXTRA: To install drivers for devices based on DisplayLink chips (manufacturer Synaptics) on Manjaro Linux use the command yay -S displaylink. Ubuntu has an equivalent package. Installing the kernel headers for your current kernel may be necessary.
PLUS: USB video card adapters for Linux Ubuntu .
Thanks!
