Re: Newbie fails booting: "Xen is relinquishing VGA console"

[Pierre-Philipp Braun <pbraun@xxxxxxxxxxxx>]

> Trying to boot the Xen kernel, all I get is a dark screen. When I remove 
> the "quiet" option from Grub's menu point, I see that the last message 
> before blanking the screen is "Xen is relinquishing VGA console".
Is this EFI or legacy BIOS/CSM?  I will assume legacy, much easier.

Do you see the XEN booting but not the Linux kernel nor the system?  You 
don't get a system prompt either?
Maybe you just need to force output on VGA, in case it goes to serial 
port.
xen.gz argument would be console=vga but you probably don't need that
kernel argument try add console=tty0
but then you should have a prompt showing up anyways, unless systemD 
service mgetty now finds out by itself where to spit? (cray things 
happen nowadays)
At this stage I think you need to play with booting, then will come XEN 
and domU guest tuning.  I suggest you try PV and then switch to PVH with 
builder = "pvh".  By the way you can even run the dom0 as PVH (as it is 
a privileged guest) but you absolutely need to define `dom0_mem` for that.
/boot/xen.gz dom0=pvh dom0_mem=1024M,max:8192M loglvl=info noreboot=true