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

petecb petecb at protonmail.com
Sun Dec 9 15:50:05 CET 2018

Well the good news is that I have now got this board to work with Coreboot v4.6 with the CMOS options and SeaBIOS! :-)

The bad news is that this obviously means a bug has crept in on the way up to 4.8 that prevents this board from working properly whenever the CMOS options are enabled. :-(

Thanks to everyone who provided help and suggestions during this journey (especially Taiidan!), it is a relief to finally have my new system up and working.

Kind regards,


‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Saturday, December 8, 2018 5:52 AM, Taiidan at gmx.com <Taiidan at gmx.com> wrote:

> On 12/07/2018 02:14 PM, petecb via coreboot wrote:
> > Hi Taiidan,
> > Thanks for your message.
> >
> > > I am using v4.6 on my system FYI (no reason for me to update) and the
> > > only options I have changed are the ones I told you about before...all I
> > > can figure is perhaps I have a different version of the SP5100 that
> > > doesn't have the erratum or something to that effect.
> >
> > Is it possible for me to build v4.6 in case something has changed since then that causes my issues? When I look at the branches available on git there is no 4.6 available.
> Get it from the coreboot website + check signature.
> > > FYI I saw you select build nvramcui as a secondary payload so you can
> > > mess with cmos options without recompiling as long as next time you shut
> > > off "Load default configuration values into CMOS on each boot"
> > > Since your menuconfig options look fine...shot in the dark but try using
> > > grub instead of SeaBIOS as I use grub.
> >
> > I will try building it with Grub. There is an option to include a GRUB2 runtime config file into ROM image. Should I select this? If so, what options should be in this file?
> I would set it to load your disk .cfg file otherwise you would have to
> do so via configfile (ahci0,msdos1)/grub2/grub.cfg or what not when it
> boots to the rescue shell.
> > Kind regards,
> > Pete
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