Re: [coreboot] Asus KGPE-D16 with latest coreboot errors with Unsupported Hardware on Qubes 4 install missing IOMMU?

[Nico Huber]

Hi Pete,

On 01.12.18 17:21, petecb via coreboot wrote:
> I'm wondering if my problem is related to not having any SATA drives
> installed? (I just have a PCI-E SSD). It may be the case that the logic
> to disable combined mode is not getting triggered in my scenario, yet it
> would do if there was a SATA drive present.

it's a configuration issue. If you have nvram settings enabled (CONFIG_
USE_OPTION_TABLE), you can enable `sata_ahci_mode` with nvramtool.

No idea why combined mode is the default, it's only useful for OSes from
the '90s. It's not about the type of drives (SATA vs PATA) connected but
how the SATA controller identifies itself to the OS.

Hope that helps,
Nico