Re: Intel IGD passthrough working intermittently

[Corvin Köhne]

On Wed, 2024-10-02 at 17:38 +0200, Marco wrote:
> CAUTION: External Email!!
> On Wed, Oct 2, 2024 at 3:39 PM Corvin Köhne <C.Koehne@beckhoff.com>
> wrote:
> > 
> > > Ok thanks, I seem to understand I should use the same value that
> > > the
> > > host uses, but how do I figure out that value?
> > > 
> > 
> > It's contained in bits 15:8 of PCI register 0x50. So, just take a
> > look
> > into lspci -xxx.
> 
> I'm not really familiar with this but here's what I did:
> 
> # setpci -s 00:02.0 50.w
> 08c1
> 
> so bits 15:8 should be the first byte there, ie 0x8, or 8 for that
> matter.
> I hope it's because I got the number wrong, but unfortunately even
> using x-igd-gms=8 I see the same erratic behavior.
> 
> 

Yeah, 8 should be the right value. Looks like you have another issue
then. Have you tried booting Linux with your setup and checked for any
errors in the dmesg output?


-- 
Kind regards,
Corvin

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