I have a Rock960 model A running Ubuntu 16 with the 4.4.103 Linux kernel (I downloaded the image from the 96boards website).
I’m trying to get video output over the USB-C port. Does this configuration support DisplayPort Alternate Mode? I’m not seeing any video output when I try a USB Type-C to DisplayPort Cable. I know the cable and monitor are good (verified with a laptop). Perhaps the 4.4 kernel is too old for DisplayPort Alternate Mode support? I see the patchset was merged to the kernel in June 2018 (so I’m guessing it is in 4.19):
Additionally, I tried a USB-C device that has Ethernet, HDMI out, VGA out, and a USB 3.0 type A port (Cable Matters 201014). I can’t get this device to work with the Rock960. The Ethernet adapter shows up on another PC as “0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet”. It seems like the default Rock960 kernel config has "CONFIG_USB_NET_AX88179_178A"set so I should have this driver. Is there something I need to do to force the Rock960 USB-C port into host mode?