I can confirm that 4.5 final and 4.5-rc7 fail to boot on a 32bit guest on my setup as well. I am seeing an I/O error on the disk. Booting back into a 15.10 kernel, the disk is automatically fsck'd and boots fine. Going back to a mainline kernel, I get the I/O error again.
I'll test some of the other 4.5 release candidates to find the last good one and first bad one. We can then bisect to find the commit that introduced this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1555786 Title: [Hyper-V] VM with ubuntu 32bit with linux-next does not boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1555786/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs