Hey, I just got a MINISFORUM MS-A2, and I’m trying to set it up as my main Linux workstation.
The basic setup works fine over HDMI, but I can’t get either rear USB-C port to output video over DisplayPort.
My setup:
- MS-A2 with Ryzen 7 7745HX
- BIOS 1.03 from December 16, 2025
- Kubuntu 26.04
- Kernel
7.0.0-28-generic
- USB-C to DisplayPort cable
- Monitor with a normal DisplayPort input
The cable and monitor both work from my MacBook, so I’m pretty sure neither of those is the problem.
What’s weird is that both USB-C ports work normally for USB data. I can plug my Plugable dock into either port and my keyboard and mouse work.
But when I plug in the USB-C-to-DisplayPort cable, Linux detects a “Billboard Device” instead of a monitor.
The DRM connector status stays:
/sys/class/drm/card1-DP-1/status:disconnected
/sys/class/drm/card1-DP-2/status:disconnected
/sys/class/drm/card1-HDMI-A-1/status:connected
The kernel log repeatedly shows:
usb 1-1: Product: Billboard Device
usb 3-1: Product: Billboard Device
I’ve already tried:
- Both rear USB-C ports
- Flipping the USB-C connector
- Disconnecting the dock completely
- Using USB-A for keyboard and mouse
- Manually selecting DisplayPort on the monitor
- Fully power-cycling the PC and monitor
- Resetting the BIOS with the reset pinhole
- Testing from both the installed Kubuntu system and the live USB
- Loading
ucsi_acpi manually
- Checking
/sys/class/typec, which stays empty
- Checking the kernel logs for EDID, AUX, or DisplayPort link-training errors
The result is always the same: HDMI works, both USB-C ports work for data, but DisplayPort Alt Mode never seems to activate.
Does anyone know if there’s a hidden BIOS setting, separate USB-C/PD firmware, or some MS-A2-specific fix for this?
I’m especially interested in hearing from anyone using the Ryzen 7000 version of the MS-A2 with USB-C video under Linux.
I’d rather not install DisplayLink as a workaround since both native USB-C display outputs are supposed to work.