Just to add: The bug was fixed by chrooting from the live disc and 'update-initramfs -u'. But the bug has potential to cause troubles. And I don't know how this package was installed. I didn't install it manually.
Just to add: The bug was fixed by chrooting from the live disc and 'update-initramfs -u'. But the bug has potential to cause troubles. And I don't know how this package was installed. I didn't install it manually.