April 26, 201610 yr (sort of x-posted from Storage Devices and Controllers) I had a wonderful working Windows 8.1 VM with a passed through GPU. Worked like a charm. I ran out of SATA slots and added a used Adpatec 1430SA, and when I booted up with it in, everything seemed fine. But when I tried to boot up the VM, no joy. Then, mysteriously (okay, not at all mysteriously) the drives on the card stopped working too. The system can see them, but I can't do anything with them. I am getting the following errors: 1. When I scan drives on "unassigned drives": /usr/local/emhttp/plugins/unassigned.devices/scripts/rc.unassigned reload >/dev/null 2>&1 & disown' [23149] terminated by signal 7 (Bus error) 2. Attempt to start the VM: kernel: vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=io+mem:owns=none The VM will run if I edit the VM to use VNC, and my other not-passed through VM also runs. My short term fix is to unplug the SATA card, but I think this is just me not doing something to tell either my hardware or unraid that I have a new PCI card installed and everything is confused. Something in my syslinux.cfg? A bind:vfio thing? Any ideas? If logs or other info is needed, post and I will get it up. TIA
April 27, 201610 yr The VM will run if I edit the VM to use VNC, and my other not-passed through VM also runs. My suspicion is the SATA card and GPU are on the same IOMMU groups - assuming everything works before the SATA card was introduced. Perhaps, trying turning on ACS Override to see if it helps. Otherwise, I bet someone will ask for full diagnostic log.
April 28, 201610 yr Author My suspicion is the SATA card and GPU are on the same IOMMU groups - assuming everything works before the SATA card was introduced. Perhaps, trying turning on ACS Override to see if it helps. Thanks testdasi! Every time I think I have this figured out I learn about something new (or something I missed) like IOMMU groups. Will reinstall card and see if setting the ACS override fixes it. The simple is always the most difficult to catch.
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