[vfio-users] Cannot fix Error 43 for GTX 680 passed through to win 10 guest

[Alex Williamson]

On Tue, 2015-10-13 at 15:12 +0000, root at yoshi.dynu.com wrote:
> i am still stuck.
> 
> i read the whole thread in the archlinux forum (and feel a bit ashamed 
> for using arch right now, maybe give fedora a try)
> 
> i tried win 7 / win 8 and win 10 as guest with 440fx.
> 
> Only way to get any output on the card it to use 'vga none and degrading 
> the card to a gtx 680 again by spoofing the device id. no output when i 
> also add the extracted bios of the card.
> 
> When assigning the already hardmodded id of an Grid k2 the VM shuts down 
> after ~1 minute. (with or without k2 BIOS)
> 
> When spoofing the cards ID making it a Quadro K5000 i neither get any 
> output. (with or without k5000 bios)
> 
> when trying k2 or k5000 i started the machine with emulated graphics. 
> The VM detects the card but will still give me Code 43 when installing 
> the drivers.
> 
> Checked again that the devices i'd like to pass through are claimed by 
> the stub with 'lspci -nnvk'
> 
> How can i run qemu fully verbose to investigate further where the 
> problem might be?

Can you start with once again putting your dmesg and each of your VM
startup scripts in pastebin and reminding us what kernel and QEMU
version you're using?  Can you explain in more detail the VM shutdown
after ~1 minute with hardmod?  QEMU just exits with no error?  Thanks,

Alex