NOTE: Current ROMs for Download in Post #2
I have been on top of the Linux/Ubuntu/Android on HD2 scene for quite a while, testing builds every day!
I'm not sure if you guys know, but the development of Android on the HD2 has jumped millions of miles this past week, we basically went from not being able to load Android at all, to having stable almost fully working builds.
I won't bore you with all the details, let's get to the fun stuff!
I would recommend you flash a 2.12.xx or a 2.14.xx radio before trying these out. It eliminates A LOT of problems reported by some users.
You can get the ROMs a long with my favorites in post 2.
Extract the file to your SD card root and then click on CLRCAD (you won't see anything happen) then click on Haret, and you're good to go.
Also, recommended working "lite" Windows Mobile 6.5 ROMs also in post 2 added as they come out.