EDIT: SOLVED! see https://askubuntu.com/a/403876/212688
i re-installed ubuntu 13.10 x64 on my vaio pro, in legacy, bios mode. the installation is lvm/luks encrypted and thus asks me for the encryption password before booting.
it does not reliably boot. i often have to try several times, those are the errors i get:
... alert! /dev/mapper/ubuntu-vg-root does not exist ...
and sometimes it "boots" without asking me for the password and then fails with
cryptsetup: cvms_activate is not available
this happened on my old install, i fully wiped the ssd and the problem still persists. how can i fix this?
and does anyone have an idea, why booting takes over one minute? the pci-e samsung ssd reads with around 800MB/s that should boot in 15 seconds or less.
my macbook with a slow sata3 ssd boots in 20 seconds, with full disc encryption.
i didn't mention it before, but i used the defaults of the installer and didn't create my own partition layout. just install with internet and getting updates during the install, reboot into system, install updates and then i had the error, again, like in my previous install.