n Thu, Apr 21, 2011 at 05:41:29PM +0200, Robin Axelsson wrote:
> Package: Debian-testing-amd64-DC-1.iso (latest version converted to boot
> USB)
> Severity: Critical
> Platform: x86_64 Linux (also .386/i686)
>
> Description of problem:
> Since I updated the firmware of my BIOS to a revision that supports AMD
> IOMMU and turned that feature on, pretty much anything that runs
> Linux fails to boot All I see about half a second after I pass the
> GRUB bootloader is a blinking cursor in the upper left corner. The
> mouse gets disabled (i.e. powered off in spite of being plugged in)
> and the keyboard doesn't even respond to caps-lock, num-lock and
> scroll-lock toggles (numlock light is constantly on).
>
> I assume that it is needless to say that this is a non-issue when
> the IOMMU feature is disabled.
[...]
So there is a bug in the BIOS, and you have a workaround for it.
I don't see a bug in Debian.
Ben.