Xen host on FreeBSD 11.2-RELEASE

Pratyush Yadav pratyush at freebsd.org
Tue Aug 14 05:09:40 UTC 2018

On Tue, Aug 14, 2018 at 8:19 AM Steven Friedrich
<steven.e.friedrich at gmail.com> wrote:
> I have a new HP Slimline Desktop 290-p0014 which features an Intel i7-8700 and no com ports.
> I was hoping to create a FreeBSD Xen host to explore various Linux distros.
> I was following along with chapter 21.8 FreeBSD as a Xen -Host.
> I did a fresh install, pkg install xen and when I rebooted it displayed in blue Booting, but then it turned red.
> I have no serial console because I have no com port.
> Can anyone involved with Xen try this and reveal anything not disclosed in the Handbook?
> I am using handbook rev 52113 modified on 2018-08-12 08:50:20 by eadler.

I'm not quite sure I understand your question, but I assume your
screen turns blank after booting, and stays like that.

If so, then that is the default behavior. Xen by default does not keep
using the vga console. Add this to your command line parameters (the
xen_cmdline option in your /boot/loader.conf):

So if you are using the default Xen command line options specified in
the handbook page, your xen_cmdline should look something like:

xen_cmdline="dom0_mem=8192M dom0_max_vcpus=4 dom0pvh=1
console=com1,vga com1=115200,8n1 guest_loglvl=all loglvl=all

If this does not work, try doing vga=ask,keep and then play around
with the different vga mode options (try the text- options first).

Check out this document for more details on the Xen command line options [0].

Also, freebsd-xen at freebsd.org would be a better place for Xen related questions.

Pratyush Yadav

[0] https://xenbits.xen.org/docs/4.6-testing/misc/xen-command-line.html

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