RE: Installing and running ubuntu on arm64/virt machine (Guest has not initialized the display (yet).")

[ckim]

Hi, Peter Maydell,(and all)

Thank you for the explanation (I was aware of the two pass run though).
But I have a question about the serial port connection.

> You'll probably find it easier to debug if you use a serial console; that
> way you'll be able to see the guest booting and log in and can debug
> what's going on a bit better from there. In particular, the installer does
> *not* use the graphics device, so you will absolutely need to find out
> where it's putting the serial output in order to use the installer.

When I pass -kernel=  option, I can pass the serial port to connect using 
-append = ".." option.
But in this case, (I have only -cdrom and -drive option), how can I know the 
serial port the install program on the CDROM uses?
And even if I know it, how can I connect it to my console? (or using minicom?)
I have no idea, could you give me some more help?
Thank you!

Chan Kim

> -----Original Message-----
> From: Peter Maydell <peter.maydell@linaro.org>
> Sent: Monday, May 17, 2021 6:33 PM
> To: Chan Kim <ckim@etri.re.kr>
> Cc: qemu-discuss <qemu-discuss@nongnu.org>
> Subject: Re: Installing and running ubuntu on arm64/virt machine (Guest
> has not initialized the display (yet).")
> 
> On Mon, 17 May 2021 at 10:08, <ckim@etri.re.kr> wrote:
> >
> > Hi, list members,
> >
> >
> >
> > While investigating how I can install ubuntu on a qemu virtual machine,
> I found https://askubuntu.com/questions/884534/how-to-run-ubuntu-desktop-
> on-qemu .
> >
> > So I found how to install the OS onto a hard disk using CDROM, and then
> boot from the OS installed hard disk as in real computer. Very interesting.
> >
> > And I tried ubuntu 18.04.5 on arm64/virt machine (I used the original
> virt machine).
> >
> > The script is below (modified for my case). (configured with
> > –enable-gtk option)
> 
> >
> > I separately downloaded ubuntu-20.04.2-live-server-arm64.iso from
> https://ubuntu.com/download/server/arm so the first wget command is not
> executed.
> >
> > When I first run the script, I see a qemu monitor window. And I type
> ‘quit’, and then another window comes up saying “Guest has not initialized
> the display (yet).”
> >
> > What is wrong with this script? Any advice will be very much appreciated.
> 
> "Guest has not initialized the display" generally means "the guest hasn't
> made any attempt to turn on the graphics". Maybe it doesn't have the
> virtio-gpu device support compiled in, or maybe the guest OS is just not
> configured to use graphics.
> 
> You'll probably find it easier to debug if you use a serial console; that
> way you'll be able to see the guest booting and log in and can debug
> what's going on a bit better from there. In particular, the installer does
> *not* use the graphics device, so you will absolutely need to find out
> where it's putting the serial output in order to use the installer.
> 
> Also, if you type "quit" at a QEMU monitor that tells QEMU to exit, which
> is going to stop whatever your guest was trying to do... The script runs
> QEMU twice, so you 'quit' the "run the installer" QEMU instance, and the
> script then proceeded to the "run the installed OS" QEMU, which of course
> sits there doing nothing because you killed the attempt to install.
> 
> If you re-run the script you'll need to delete the disk image, because
> that's what it uses as its "do I need to run the installer"
> check. It might be simpler just to run the QEMU command manually.
> 
> thanks
> -- PMM