Very curiously setting an explicit dom0 memory does allow the machine to boot - that was a surprise to me!
I don't know if my colleague is using an explicit dom0 memory allocation - if he is then it's very possible that it's not even a regression and all current/historic kernels may have required this flag. I'll check this tomorrow when my colleague is back.
I know that 3.5.0-36 is a dev kernel - I followed http:// packages. qa.ubuntu. com/qatracker/ milestones/ 223/builds/ 25321/downloads to test it just to try and debug where the issue was.
Very curiously setting an explicit dom0 memory does allow the machine to boot - that was a surprise to me!
I don't know if my colleague is using an explicit dom0 memory allocation - if he is then it's very possible that it's not even a regression and all current/historic kernels may have required this flag. I'll check this tomorrow when my colleague is back.