Its latest ROCm and Ubuntu 16.04. It works fine on my rigs with installed cards in big PCIe slots. But whenever I tried to run it with USB risers, it does not see the cards in ROCm, so TDXminer will not work. No error, nothing, simply doesnt see the cards. Thats why I asked how he made it working even in the smaller PCIe slots with the USB risers.
Iam not a Linux Pro

I can help you with that. I'm using only usb risers and 16gb usb stick for linux instead of hdd/ssd. Its easy to setup.
Fresh install ubuntu 16.04
sudo apt update
sudo apt upgrade
rocm.github.io
Follow installation guide.
Download tdxminer
setup script to run miner, same like creating .bat file on windows.
at the beginning
./tdxminer .... etc...
chmod +x gin
./gin
Enjoy.
If you still need help, let me know.
This is exactly what I have done a few times now. Also tried to set slots in Bios to Gen 1, 2, 3, Auto... No luck. ROCm can only see cards directly connected to the bigger PCIe slots, but no cards connected with USB risers. They simply wont shown up.
I think thats the same exactly problem much users here have too. So any solution is welcome. Maybe there is some special trick, but anyone just forgot to tell
