October 24, 20214 yr Hi all! I'm trying to fix a vfio binding issue. I have 2 GPU's in my server, and I'm able to pass the 2ND GPU to my VM's with the integrated VFIO-PCI plugin that comes with unraid 6.10. However, when I try to bind the 1rst GPU (checking all 4 NVIDIA devices, just like the 2nd GPU) it will freeze on boot when it comes to vfio-pci.... in the boot sequence. I read that disabling the framebuffer can help the system bind boot device GPU's, so I'm not trying to disable the unraid framebuffer when it boots from GRUB in hopes it will allow the 1rst GPU to bind as well instead of just freezing the PC on boot. I have tried this in my GRUB config, but to no avail, the framebuffer is still visible no matter what I do. Has anyone had any success with these methods on NVidia cards to disable the video output on boot? label Unraid OS menu default kernel /bzimage append initrd=/bzroot pci=noaer pcie_acs_override=downstream,multifunction video=efifb:off,vesafb:off,vesa:off When I boot I get this, even with the video=efifb:off... Here is a screen shot of the vfio-pci freezing. I've also attached a diagnostic or my server (when I don't try to bind the 1rst GPU). tower-diagnostics-20211024-1104.zip
October 24, 20214 yr Author PS: I used to be able to bind VFIO devices using the vfio-pci.ids in GRUB, but that does not work anymore in unraid 6.10, so the VFIO-PCI plugin (integrated with 6.10) is the only way to go, but that solution freezes my PC. Edited October 24, 20214 yr by lachinois
October 24, 20214 yr Why do you say it's freezing? When using efifb:off in all cases I saw the output on the monitor stops exactly to that of your screenshot: vfio-pci blablabla vga decodes blablabla In my opinion it's working as expected. Edited October 24, 20214 yr by ghost82
October 26, 20214 yr On 10/24/2021 at 5:09 PM, lachinois said: Hi all! I'm trying to fix a vfio binding issue. I have 2 GPU's in my server, and I'm able to pass the 2ND GPU to my VM's with the integrated VFIO-PCI plugin that comes with unraid 6.10. However, when I try to bind the 1rst GPU (checking all 4 NVIDIA devices, just like the 2nd GPU) it will freeze on boot when it comes to vfio-pci.... in the boot sequence. I read that disabling the framebuffer can help the system bind boot device GPU's, so I'm not trying to disable the unraid framebuffer when it boots from GRUB in hopes it will allow the 1rst GPU to bind as well instead of just freezing the PC on boot. I have tried this in my GRUB config, but to no avail, the framebuffer is still visible no matter what I do. Has anyone had any success with these methods on NVidia cards to disable the video output on boot? label Unraid OS menu default kernel /bzimage append initrd=/bzroot pci=noaer pcie_acs_override=downstream,multifunction video=efifb:off,vesafb:off,vesa:off When I boot I get this, even with the video=efifb:off... Here is a screen shot of the vfio-pci freezing. I've also attached a diagnostic or my server (when I don't try to bind the 1rst GPU). tower-diagnostics-20211024-1104.zip 79.64 kB · 0 downloads As ghost wrote it already. The bootarg still works as it should and as you see. Your monitor just freezed up where Unraid stopped using your monitor. (Like a frozen Picture)
August 31, 20223 yr Reviving this from the dead. When you guys say it's "freezing" the output, in my case I still get a blinking cursor, so it doesn't appear to be frozen. I'm trying to passthrough an iGPU and I got it working briefly, but once I rebooted the unraid box with hdmi plugged in, I can no longer get it working for some odd reason. All I get is this console output, and when I start the VM it still shows this console output from Unraid.
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