Comment 18 for bug 778520

Excerpts from piwacet's message of Wed Sep 28 01:43:19 UTC 2011:
> Apologies if I'm misunderstanding something, but I'm not sure this bug
> is fixed in Oneiric.
>
> I've tested this in virtualbox with both the server 64-bit beta2 and the
> daily build server 64-bit for Sept. 27th. If I've hit this same
> problem, it's 100% reproducible.
>
> Two virtual disks, with /dev/sda1 /dev/sdb1 as raid 1 /dev/md0 for /.
> /dev/sda2 /dev/sdb2 as raid 1 /dev/md1 for swap.
>
> If I "disconnect" one of the drives, on booting the grub countdown
> appears, and then the screen goes black. The only response I can get
> from the machine is if I blindly press 'enter', then type 'reboot', then
> press 'enter' again, which causes the virtual computer to reboot. It
> doesn't matter which of the 2 disks I 'disconnect.'
>
> So far, this has happened 100% of boot attempts. If I reattach the
> disk, it boots fine.
>
> Apologies if I've misunderstood something. I can do some virtualbox
> testing if that would help.

piwacet, I've done quite a few test runs doing exactly as you say, and
never been dropped to initramfs. Also I've never had the screen go black
on me. I have been testing with KVM though, not virtualbox.

Can you make sure that the kernel commandline has no "quiet" argument,
and also has 'nomodeset' so we get a text bootup? Its very odd that it
is all black.