Re: [Qemu-discuss] Why arm and aarch64 -M virt boards don't have graphics support?

[Ciro Santilli]

On Sun, May 20, 2018 at 2:06 PM, Peter Maydell <address@hidden> wrote:
> On 20 May 2018 at 11:19, Ciro Santilli <address@hidden> wrote:
>> Is there a fundamental technical reason, or just was not worth the trouble?
>>
>> The wiki says https://wiki.qemu.org/Documentation/Platforms/ARM
>>
>>> The only thing it [virt] doesn't have is graphics
>>
>> and the graphic window indeed does not show on -M virt.
>
> It's slightly out of date, I guess. The board has no
> built-in graphics, but it has PCI so you can plug in an
> emulated PCI card. From that set, VGA cards will work
> with TCG but not KVM (because of the memory-attribute-clash
> problem); virtio-gpu should work with both TCG and KVM.
>

Do you know which options I might need to add to my  QEMU -M virt
command to make it open a graphic window (and hopefully show the
CONFIG_LOGO penguin)?

For example on QEMU v2.12.0, the following boots fine but does not
open an SDL graphical window like an analogous x86 command would:

qemu-system-aarch64 \
-serial mon:stdio \
-M virt \
-append 'root=/dev/vda console=ttyAMA0' \
-cpu cortex-a57 \
-kernel Image \
-drive file='rootfs.ext2.qcow2,if=virtio,format=qcow2' \

> I've never tried to use graphics with the virt board (having
> no need for it), but I believe it ought to work. Feel free
> to experiment and update the wiki page accordingly.
>

Can anyone create an account to edit the wiki nowadays? I've never
been able to find the create account button and thought it was invite
only.

> thanks
> -- PMM