[Bug 1926052] [NEW] qemu freezes during grub on arch cloudimg

[David Hauer]

Public bug reported:

When booting the Arch Linux cloud image and setting `-nographic`, qemu will 
freeze during the grub bootloader.
Tested with qemu 5.1 and 5.2.

Reproduce:
```
wget 
https://gitlab.archlinux.org/archlinux/arch-boxes/-/jobs/20342/artifacts/raw/output/Arch-Linux-x86_64-basic-20210420.20342.qcow2

qemu-system-x86_64 -hda Arch-Linux-x86_64-basic-20210420.20342.qcow2
-nographic

```

It will get stuck while displaying `Welcome to GRUB!`
If -nographic is omitted, it will continue to boot (without any keyboard 
interaction)

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1926052

Title:
  qemu freezes during grub on arch cloudimg

Status in QEMU:
  New

Bug description:
  When booting the Arch Linux cloud image and setting `-nographic`, qemu will 
freeze during the grub bootloader.
  Tested with qemu 5.1 and 5.2.

  Reproduce:
  ```
  wget 
https://gitlab.archlinux.org/archlinux/arch-boxes/-/jobs/20342/artifacts/raw/output/Arch-Linux-x86_64-basic-20210420.20342.qcow2

  qemu-system-x86_64 -hda Arch-Linux-x86_64-basic-20210420.20342.qcow2
  -nographic

  ```

  It will get stuck while displaying `Welcome to GRUB!`
  If -nographic is omitted, it will continue to boot (without any keyboard 
interaction)

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