After rebooting my laptop, Debian 8.2 didn't want to boot but tells me:
cryptsetup: lvm is not available
The Hitchhiker's Guide to the Galaxy says: "Don't Panic". After about 3-5 minutes, the build-in shell is loaded (initramfs). You can directly leave the shell by typing exit and the system will boot normally. I don't know the problem yet, but it also says:
modprobe: module ehci-orion not found in modules.deb