----- On Apr 25, 2019, at 4:53 PM, Roderick Colenbrander [email protected] wrote:
On Sat, Apr 20, 2019 at 11:35 PM Francois Gouget [email protected] wrote:
- Second the motherboard too needs to support VT-d. Both machines have an ASRock P67 Extreme4 motherboard. Unfortunately UEFI says "unsupported" next to the "VT-d" setting for the motherboard :-( It looks like there was some confusion as to whether the P67 chipset supported VT-d initially. From what I gathered it's only Q67 that does but this caused some manufacturers, among which ASRock, to initially claim support and later retract it.
From memory this Asrock board likely works okay. Back in the days we were a very early adopter of Vt-d/iommu working closely with Intel / Nvidia. Especially first gen i7 motherboards were very, very buggy with vt-d. Often not supporting it or else advertising support and having bad bugs preventing it from working. I had to test dozens of motherboards. Asrock at that time generally worked.
Thanks, Roderick
Not got any huge experience with exactly this motherboard, but the first bios'es available for those chipsets (P67) was probably a bit sketchy. You might consider checking if there is a newer/beta bios to test perhaps? (With any of the problems that might cause ofc). https://www.asrock.com/mb/Intel/P67 Extreme4/#BIOS
I guess UEFI is somewhat troublesome even if "overriding" this with kernel options when UEFI reports "NA" for the function. I dunno if you can "force" it like that anyway?
As long as it's not a "K" processor, the 2600 is working with vt-d, where the 2600K does not (as you probably are aware of).
Sveinar