Re: How to enable PC-Console on boot

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Feb 02, 2021 at 04:44:43PM +0200, Pierre-Philipp Braun wrote:
> >>> Do you see the Xen boot messages on the screen ?
> >>>
> >>
> >> No, the screen turns black right after the message:
> >>
> >> ```
> >> Loading /netbsd-XEN3_DOM0.gz.../
> 
> Matthias there were two implicit components in the question.  XEN boot msg
> and dom0's kernel boot msg.
> 
> > this means that Xen doesn't know how to deal with the video adapter.
> >
> > I'm not sure Xen fully supports UEFI at this time (at last in Xen 4.13)
> 
> Last time I considered it, about one or two years ago, EFI and XEN was still
> looking like a nightmare.  I would recommend to switch to legacy/CSM/BIOS
> mode if the machine supports it.  It will make XEN booting much easier.  We
> can sure help if you want to go in that direction.
> 
> This issue of blank booting screen was common and happens on CentOS/RHEL and
> Debian systems also.  I guess it's indeed because it was sometimes trying to
> spit on tty0 by default instead of vga.
> 
> I notice however that your `console=pc` setting which applies to XEN
> micro-kernel may be wrong:try console=vga instead *1?
> 
> As for dom0's kernel boot msgs, there are surely ways to tune that also
> specifically for NetBSD *2.  Try to force it over there: maybe `consdev pc`?

For NetBSD dom0 it's console=pc (on the kernel command line, not the Xen
command line)

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--