Bug#748070: linux-image-3.2.0-4-amd64: moddep file not found

["Rebecca N. Palmer" <r.palmer@bham.ac.uk>]

Package: linux-image-3.2.0-4-amd64
Version: 3.2.57-3+deb7u1
Control: fixed -1 3.2.57-3

On seeing that the apt-get upgrade in my rc.local script had installed 
this security update (and nothing else), I rebooted with Alt+SysRq+b 
rather than waste time logging in and immediately rebooting (in 
hindsight possibly a bad idea, but /var/log/dpkg.log says the install 
was completed).

During boot, an error message appeared that a moddep file wasn't found 
(I can't give you the exact wording because it didn't go to kern.log), 
and the system came up without wifi (brcm80211) and with 
wider-than-normal console text (lack of framebuffer? nouveau/nvd9).

I attempted to fix this by running update-initramfs -u, but this made 
things worse, dropping to an initramfs shell with "Gave up waiting for 
root device" and "ALERT! /dev/disk/by-uuid/[...] does not exist".  (This 
system uses EFI boot.)