Finally problem with kernel-power-settings was found and fixed.

Problem:
I'm using madde for compiling and creating deb packages. Madde has its own dpkg tools (own tool for low-level creating deb package) which ignore file permitions (or change it or use its own??). And it still change permitions of /etc/kernel-power/pre-mount from 755 to 644. And upstart failed in /etc/default/mount-opts (which started pre-mount script).

Solution:
Changed generating file /etc/default/mount-opts which execute script from method 'if test -x FILE && ./FILE' to 'sh FILE || true'. In qemu now all works.

Why it worked with update? Config file /etc/kernel-power/pre-mount was not changed, so dpkg does not replaced it when update from 11 to 12. (and permitions was kept).

When I debugged it I also chmod +x permitions, so I was unable to debug it...

New fixed version is on same place.