Just a update from me.. I can confirm that changing the VCPU to one, resolves the issue.
I have build a new kernel where I have removed/reverted this patch : http://kerneltrap.org/mailarchive/linux-kernel/2010/11/19/4648631 Now the reboot/shutdown issues is gone. Next step for me, must be to find the bug from this patch. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/695012 Title: Kernel 2.6.32-27 49 won't restart/shutdown under XenServer -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs