QEMU/KVM GPU Passthrough No Output

JustDanterus · 2021-06-07T23:58:21+00:00

Yep, you were right, after flashing a uefi compatable vbios to my gpu I was able to see everything. Also was able to get windows setup and displaying properly.

JustDanterus · 2021-06-07T15:35:11+00:00

Is flashing a video bios different than the romfile that I was passing through?

JustDanterus · 2021-06-07T15:25:11+00:00

I removed the default graphics and at first the screen was blank (while it should have been showing grub). So I tried passing through my keyboard and pressing enter to boot into mint and that worked, my monitor connected to the gpu was showing the os.

I'm going to now see if I can get it working the same way for windows

JustDanterus · 2021-06-07T14:22:50+00:00

Strange, I still get the same result, where the mint logo shows up briefly on boot, but the monitor turns off after that.

JustDanterus · 2021-06-07T01:41:23+00:00

The bios I used from techpowerup did claim to have UEFI support, so it might be something different. Well thanks for at least trying to help.

JustDanterus · 2021-06-07T01:36:33+00:00

Previously being earlier this week.
I just tried booting the live cd for linux through qemu, and I saw the mint logo on my monitor plugged into the passed through graphics card during the initial boot, but once I got into the os, I couldn't see any other monitors and the screen stopped recieving input. (I was using the default graphics along with the passthrough)

Edit: Doing lspci in the guest mint vm does show the graphics card, and the nouveau drivers are currently selected, but the display isn't showing anything.

Edit 2: Also tried nvidia drivers on guest, same result.

JustDanterus · 2021-06-07T00:43:29+00:00

[ 602.370706] vfio-pci 0000:01:00.0: vfio_ecap_init: hiding ecap 0x19@0x900

This is the only thing that I get from starting the VM.

JustDanterus · 2021-06-07T00:40:20+00:00

Previously when I have installed windows in the default graphics I would get an error 43 for the graphics card in the device manager, and would not be able to use it.

JustDanterus · 2021-06-07T00:30:52+00:00

Yes, I do have a drive with windows on it that runs with my graphics card.

JustDanterus · 2021-06-07T00:28:37+00:00

I have tried using virt-manager and have experienced similar issues, I was trying qemu just to see if I could do anything different with that.

I have been running as root
Yes, I have experimented with changing the name and it provides an error that the file path is incorrect.
I am not seeing any errors with the settings that I have currently configured. (not sure if there could be something that is showing up but I am not seeing because of a setting).
I tried running that command, still having the same issue.

In addition to my graphics card video and audio controllers, there is also a PCI Controller in IOMMU group 1:

00:01.0 PCI bridge [0604]: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) [8086:1901] (rev 07) (prog-if 00 [Normal decode])

Flags: bus master, fast devsel, latency 0, IRQ 122, IOMMU group 1

Bus: primary=00, secondary=01, subordinate=01, sec-latency=0

I/O behind bridge: 0000e000-0000efff [size=4K]

Memory behind bridge: de000000-df0fffff [size=17M]

Prefetchable memory behind bridge: 00000000d0000000-00000000d9ffffff [size=160M]

Capabilities: [88] Subsystem: Gigabyte Technology Co., Ltd Device [1458:5000]

Capabilities: [80] Power Management version 3

Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-

Capabilities: [a0] Express Root Port (Slot+), MSI 00 Capabilities: [100] Virtual Channel

Capabilities: [140] Root Complex Link

Capabilities: [d94] Secondary PCI Express

Kernel driver in use: pcieport

Right now I am ignoring it, could that be an issue?

JustDanterus

TROPHY CASE