I wrote to ASROCK about this issue and they told me to install Windows. Not happy right now...Hi all,
I know this is an older ASrock board, but I am hoping someone has iommu working with this board. I've tried iommu a couple of ways:
1) Ubuntu 12.04/12.10 with kvm. iommu is picked up & I can assign a device in libvirt (an unused nic, with driver blacklisted on the host) but the vm won't start.
2) Using Ubuntu normally with IOMMU enabled gives me an endless # of sata resets on the marvell sata controller (2 ports). The other 6 (southbridge based) ports work fine. Disabling IOMMU in the biox fixes the issue completely.
3) If I try to install Xenserver with IOMMU enabled it reboots in the middle of the install. If I disable it during install & re-enable before first boot, same thing happens.
Should I give up on this board? I wrote to asrock support some time ago (3-4 days) and have heard nothing.
Edit: I have bios 1.70 which AFAIK is the latest. I'm also using a 1090T 6 core CPU.