Bug#594967: Bug #594967: [poulsbo] grub-pc Hangs After "Welcome to GRUB!"

[P. J. McDermott]

I'm Cc'ing everyone involved in this bug for information, since I don't
know who's subscribed (I am though).

I first noticed this issue a month or two ago on installing Squeeze onto
my Acer Aspire One AO751h, though I didn't have time to do anything more
than install the old working GRUB 2 version. Yesterday I made myself a
Squeeze installation on a flash drive and tried to boot it on the
AO751h, only to be reminded of the issue. I'm on break now, so today I
began investigating the bug. I'm looking through the differences between
20100617-1 and 20100702-1 (thanks Steve for bisecting this).

Considering the machines this is affecting (machines with the Poulsbo
chipset) and the configuration workaround, I'd bet the issue lies in the
video subsystem. So far, the changes in the video/ directory appear to
be mostly code re-factoring, so I think my next step will be to add some
debugging output to 20100702-1's kernel and see where GRUB hangs up or
what isn't being done. Don't expect any miracles though, as this is my
first time in the GRUB 2 code. ;) If anyone has any thoughts on what the
problem might be or familiarity with the GRUB kernel's initialization of
the video subsystem, that would be helpful.

P. J.