Hi all,
I picked up an Arc A770 during black Friday as an upgrade to my 1060. I was kind of hesitating because I couldn’t find definitive answers if the card would work for my use case or not, but I couldn’t resist the bang for buck 😊 Maybe I should not be as cheap in the future, because now I run into some deal-breaking-issues. Searching these forums, Reddit, etc gave me a lot of info, but it did not clarify everything unfortunately. So I’ll try my luck here:
First my relevant hardware and use case:
ASRock Intel Arc A770 Challenger 16GB OC
Gigabyte Aorus X570 Ultra
AMD Ryzen 9 5900X
Samsung 990 Pro 1TB
Unraid Version: 6.12.5
The SSD is passed through directly as a (newly created) Windows 11 Pro VM. My goal is to use this VM for gaming. It worked flawlessly with my previous setup (Win10 & nvidia 1060). But now with the A770 I run into the following issues:
The VM boots up just fine with the A770 passed through (After setting Hyper-V to No). But when shutting down the VM, the Unraid host locks up and can only be reset the hard way... With a monitor connected to a second GPU, the last messages are something along the lines of:
vfio-pci 000:0e:00.0: not ready 1234ms after FLR: waiting
This happens ONLY when the sound card of the GPU is also passed through.
ReBAR is reported as disabled in Intel software and performance is sub-par. It is enable in system BIOS though (together with Above 4G something..)
Now googling these symptoms give a lot of hits. But not a definitive answer. I saw some tweaks etc in this forum, but not sure if they are still relevant to the current Unraid version. So my main question is:
Will the above issues be resolved when I use a custom kernel with Linux 6.2+ ?
Or am I better of returning the card and spend a few hundred bucks more if I want a seamless experience?
EDIT: is this also your usecase @SimonF ? And did you get it working?