12.04 LTS: 64-bit desktop by default?

[Stuart Langridge]

On 17/04/12 07:14, Martin Pitt wrote:
> Alan Bell [2012-04-16 19:26 +0100]:
>> Have you tried a 64 bit install on a netbook?
> 64 bit does not work on my Dell Mini 10 (dual-core Atom). This machine
> is a few years old, of course. I don't consider this a blocker for
> moving to 64 bit by default, and just add a label like "for computers
> that are older than 5 years, you rather grab<this image>".
Can the iso itself detect when it's booted on an i386 system and say 
"Hey, you've got the modern Ubuntu disc; what you needed was the 
slightly older ("32-bit") disc, which you can get from www.ubuntu.com" 
in some sort of nice way? Obviously it's irritating to have downloaded 
(or got from someone) a whole disc that doesn't work, but making it 
point you in the right direction to fix the problem would be nice.

sil