On Mon, 27 Nov 2023 at 12:29, Sebastian Ott <seb...@redhat.com> wrote:
>
> Hej,
>
> qemu fails to start a guest using the following command (the process just
> hangs): qemu-system-aarch64 -machine virt -cpu host -smp 4 -m 8192
> -kernel /boot/vmlinuz-6.7.0-rc1 -initrd ~/basic.img -append "root=/dev/ram
> console=ttyAMA0" -enable-kvm -device virtio-gpu,hostmem=2G -display none
>
> ..which I've used to debug a potential virtio-gpu issue. Bisect points to
> 69562648f9 ("vl: revert behaviour for -display none")

Is it actually hanging, or is the guest starting up fine but
outputting to a serial port which you haven't directed anywhere?
The commandline is a bit odd because it doesn't set up any of:
 * a serial terminal
 * a graphical window/display
 * network forwarding that would allow ssh into the guest

If you add '-serial stdio' do you see the guest output?

thanks
-- PMM

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