Thanks.
I will look into this.
On 11/15/2017 10:56 AM, misairu wrote:
> Does your Subsystem ID and Subsystem Vendor ID (of your GPU) show
> correctly inside the WindowsVM?
>
> It should be the same ID shown in your host. Otherwise that will trigger
> the Code 43 error.
>
> I once have this proble
Does your Subsystem ID and Subsystem Vendor ID (of your GPU) show
correctly inside the WindowsVM?
It should be the same ID shown in your host. Otherwise that will trigger
the Code 43 error.
I once have this problem but now solve this by some vfio-pci option. Now
I have a laptop that passthrough m
I meant to say you cannot run without the intel card in windows if you
have optimus. I am glad seabios somehow hides optimus.
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Title:
qemu canno
It works using seabios. I assume that the nvidia driver cannot see
optimus, and expect an intel card also, unless I use OVMF. I do know
that you cannot run off the intel card in windows. It's a no-no. Thanks
for the bios tip. Maybe I can hide the optimus feature from OVMF and
windows.
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I suspect the 'M' in GTX880M is the biggest contributor to the Code 43.
The fact you can get it to work once per host boot on SeaBIOS is a
fluke. If you can get custom ROMs, you might try playing with the vfio-
pci x-pci-device-id option to masquerade as a discrete card, maybe that
would avoid mob
ok, so I will research qemu and nvidia optimus. I have a custom BIOS
made by an MSI employee. I have hundreds of bios options to play with.
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My uefi build script. If you see an error or issue that could cause
error 43 please confirm it:
#!/bin/bash
cd /home/dad/qemu/qemu2
sudo ./up.sh tap0
configfile=./vfio-pci1.cfg
vfiobind() {
dev="$1"
vendor=$(cat /sys/bus/pci/devices/$dev/vendor)
device=$(cat /sys/bus/pci/dev
GTX880M - uefi firmware built in, confirmed
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Title:
qemu cannot run twice
Status in QEMU:
Invalid
Bug description:
After using qemu with g
Perhaps you get Code 43 because mobile NVIDIA chips make use of Optimus
which requires significant proprietary firmware support. QEMU/VFIO has
never claimed to work with such devices. The further speculation in the
original report that QEMU corrupted something in Linux seems
unjustified, the devi
Comments #3 & #4 are not relevant to this bug and inaccurate
speculation. There is no known incompatibility between NVIDIA drivers
and OVMF. Many users, including myself, use this combination daily.
The issue is far more likely to be a VM configuration issue or lack of
UEFI support in the GPU ROM
NOTE: I only get gpu passthrough to work when using seabios. UEFI will
not work with modern nvidia drivers. You get the 'code 43' error because
whatever standards nvidia expects when talking to uefi are not met by
the OVMF firmware used by qemu. This issue happens to windows users
also. They had to
NOTE: Article showing windows users updating their motherboard uefi firmware to
get around code 43:
https://devtalk.nvidia.com/default/topic/861244/cuda-setup-and-installation/geforce-740m-asus-x550l-code-43-after-windows-10-update/3
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I have been told that getting this to work with a laptop is rare.
I own an MSI GT70-2PE.
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Title:
qemu cannot run twice
Status in QEMU:
New
B
If you get one boot where GPU assignment works with a mobile GeForce,
you're doing better than most.
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Title:
qemu cannot run twice
Status in QE
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