I am trying to install Qubes on my TUXEDO laptop (not yet listed on the HCL).
However, the installation fails (Panic on CPU 0: Xen BUG at drivers/passthrough/amd/iommu_init.c:1386), which is likely due to AMD-Vi not enabled in UEFI (?). However, I do not find the option to actually enable this; the UEFI is very minimal without any chipset config menu.
the tong fang gx4idl i bought from skikk has the same issue.
so far the support form skikk only answered me that amd-vi is enabled.
maybe you are more successful with tuxedo support.
missing is the iommu recognition, and i am not sure if xen doesnt recognize the device table correctly (device range 0x3 - 0xfffe) or the bios simply disabled it.
maybe the tuxedo bios is more complex and you find settings for AMD-VI or even IOMMU.