As of writing, I have got Ubuntu 21.10 with Linux 5.14.16 running on my Unmatched, with a CPU clock speed of 1.4GHz. It runs perfectly fine with an old ATI 5570 1GB, until trying to run anything with Vulkan or OpenGL ES above version 3.0.
So, I tried using a Radeon VII which actually worked! But the USB devices - including the mouse and keyboard - would cut out at random. Launching any sort of game - even Doom using the GZDoom engine - results in all USB devices to disconnect, reconnect 5 seconds later, then instantly disconnect over and over again. It ran without issue headless, but that defeats the purpose. I don’t have this GPU on hand anymore as it has been sold.
The 3rd GPU tested was a AMD Radeon Pro WX3100 4GB. No luck: It will boot, with evidence from the serial terminal and the fact I can SSH into it, but nothing comes up on the monitor.
dmesg doesn’t show anything about detecting the GPU, neither does
lspci or `lshw’. Tried it on my main PC running Arch Linux to see if is faulty. It booted just fine with video output.
The previous one is an unusual GPU, so I thought to try an AMD RX 550 2GB instead. That is sure to work! To my surprise, no. The outcome was exactly same as the Radeon Pro WX3100. No video output, booted as if it was headless. Again, nothing in
lshw indicates a GPU is detected.
Things I have tried so far to get the the RX 550 working:
- Install Linux firmware.
U_BOOT_PARAMETERS="ro quiet radeon.si_support=0 radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1 amdgpu.dc=1 amdgpu.dpm=1 amdgpu.modeset=1 amdgpu.ppfeaturemask=0xffffffff"to
/etc/default/u-boot, then running
- Boot with kernel version that Ubuntu 21.10 provides.
Not sure on what else to try to get the RX 550 working. I would be grateful for any help on this issue.