October 23, 20196 yr 33 minutes ago, J89eu said: I use UEFI for booting, I was having some issues with legacy so switch to UEFI and haven't looked back. Can't do much for a few hours as I'm not at home! I posted this on another topic also about being stuck at Tiano core. With cards that don't like being passed through, the following seem to help: Boot Unraid in legacy mode - I purposely disabled UEFI when building my USB stick to ensure if it boots, it 100% boots in legacy mode. Set primary GPU as something other than the to-be-passed-through card in the motherboard BIOS Use Q35 machine type (I recommend starting a new template from scratch AND use Unraid 6.8, save you the trouble of needing the root port patch) Dump your own vbios and use it
October 23, 20196 yr Author I didn't think the VBIOS was required for AMD GPU's? I only have the Vega in the system, no onboard graphics either since the Ryzen's don't have it on most CPUs
October 23, 20196 yr 32 minutes ago, J89eu said: I didn't think the VBIOS was required for AMD GPU's? I only have the Vega in the system, no onboard graphics either since the Ryzen's don't have it on most CPUs vbios is never a "required" thing. It's a "fix" thing i.e. if you have problems passing through a GPU (regardless of brand), that is a fix that you can attempt. It is particularly relevant to passing through a primary GPU. In fact, my general recommendation is, where possible, dump your own vbios regardless. It can only help with stability. Edited October 23, 20196 yr by testdasi
October 23, 20196 yr Author OK, my issue then is that I don't have another GPU to use... I'll look into borrowing one for now. Still not home yet to look at why the server has gone down but hopefully I can get that working and with the properly stubbed soundcard I will hopefully get some sound!
October 23, 20196 yr 43 minutes ago, J89eu said: OK, my issue then is that I don't have another GPU to use... I'll look into borrowing one for now. Still not home yet to look at why the server has gone down but hopefully I can get that working and with the properly stubbed soundcard I will hopefully get some sound! It's just one of the potential fixes you can try. Personally, I have found vbios is less useful without booting Unraid in Legacy mode. There's something about UEFI that prevents a GPU from resetting properly.
October 23, 20196 yr 5 hours ago, testdasi said: It's just one of the potential fixes you can try. Personally, I have found vbios is less useful without booting Unraid in Legacy mode. There's something about UEFI that prevents a GPU from resetting properly. I'm also using Legacy Mode, because with the UEFI it never worked properly. Also the vbios is required for me to actually show the image before fully loading the OS...
October 24, 20196 yr Author Not had chance to do this yet but hopefully tonight, I started to mess around with another VM as a test to rule out any OS issues from the previous hardware but it locked up and I had to fat finger the server which then resulted in my cache pool sh*tting the bed so I've been rebuilding that today!
October 24, 20196 yr Author OK now booting up in legacy mode. Cannot attach a second GPU to my system without removing the RAID card so I ran through the steps from Spaceinvaderone's video and managed to dump the VBIOS but when I use that file I just get a black screen or nothing at all on the VM, using one I grabbed from Techpowerup ages ago and have been using until I dumped the VBIOS for this test works fine but still no sound passing through from either the GPU or the dedicated... I then moved the dedicated sound card to another PCIe port and still the same, I cannot seem to get any sound at all to work..
October 24, 20196 yr Author Oddly spinning up a new VM the sound works fine... I guess I just need to bite the bullet and reinstall the OS on my NVMe drive and see how I get on with that. I just don't get why it would work in one and not the other
October 26, 20196 yr Author OK I though I'd wrap this up as I'm now all working. Essentially I ended up having to create a whole new VM. It had the same settings yet the XML was totally different. This then got my soundcard working, for other parts I needed to switch to Q35 and also enable both on the ACS Override. Thanks everyone for your help Edited October 26, 20196 yr by J89eu
September 12, 20214 yr On 10/20/2019 at 8:52 PM, david279 said: Stub the card from the system What does that mean? I can stub a toe. Or a cigarette. But stub a card?
September 13, 20214 yr 17 hours ago, oh-tomo said: I can stub a toe. Or a cigarette. But stub a card? Means attaching a device to a dummy driver. You "stub" a device with boot args in your syslinux: pci-stub.ids=aaaa:xxxx where aaaa:xxxx are vendor/product ids. Similar to: vfio-pci.ids=aaaa:xxxx For difference between the two have a read here: https://unix.stackexchange.com/questions/328422/pci-stub-vs-vfio-pci In my opinion, better vfio-pci.ids Edited September 13, 20214 yr by ghost82
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