Vagrant boxes 20.04 and higher hang on startup.

[Jered Sutton]

### Vagrant version

Vagrant 2.2.10

### Host operating system

Ubuntu 20.04

### Guest operating system

Ubuntu 20.04 (https://app.vagrantup.com/ubuntu/boxes/focal64)

### Vagrantfile

```ruby
Vagrant.configure("2") do |config|
  config.vm.box = "ubuntu/focal64"
end
```

### Expected behavior

The VM should start and be available for use.

### Actual behavior

The VM seems to be running but times out on SSH. Virtualbox becomes unresponsive when the VM is selected.

### Steps to reproduce

1. vagrant init ubuntu/focal64
2. vagrant up

### References
I suspect it may be the issue reported here: https://forums.virtualbox.org/viewtopic.php?f=8&t=98427#p480206

It looks like previous releases of the image used a raw file for the console output.

I do not have this problem with the bento/ubuntu-20.04 image. It is also worth noting that the bento image does not use a raw file for console output either.

[Jered Sutton (jered-sutton)]

Sorry, this appears to be a duplicate of https://bugs.launchpad.net/cloud-images/+bug/1890942.

[Jered Sutton (jered-sutton)]

Fixed by: https://code.launchpad.net/~giner/livecd-rootfs/+git/livecd-rootfs/+merge/388963

[John Chittum (jchittum)]

work is tracked in #1874453. MP in devel is merged and SRU process to Focal started