Comment 14 for bug 1069350

Looks like DKMS (via kernel post-install hook, via dpkg, via apt-get) is responsible for this:

root 18414 0.0 0.0 27848 3864 pts/12 S+ 22:35 0:00 /usr/bin/perl /var/lib/dpkg/info/linux-image-3.13.0-8-generic.postinst configure 3.13.0-8.27
root 18422 0.0 0.0 4332 616 pts/12 S+ 22:35 0:00 run-parts --verbose --exit-on-error --arg=3.13.0-8-generic --arg=/boot/vmlinuz-3.13.0-8-generic /etc/kernel/postinst.d
root 18437 0.0 0.0 4428 792 pts/12 S+ 22:35 0:00 /bin/sh /usr/lib/dkms/dkms_autoinstaller start 3.13.0-8-generic
root 18440 1.0 0.0 15256 2764 pts/12 S+ 22:35 0:00 /bin/bash /usr/sbin/dkms autoinstall --kernelver 3.13.0-8-generic
root 18444 0.0 0.0 15256 1760 pts/12 S+ 22:35 0:00 /bin/bash /usr/sbin/dkms autoinstall --kernelver 3.13.0-8-generic
root 18445 0.0 0.0 14064 1192 pts/12 S+ 22:35 0:00 /bin/bash /usr/bin/rpm -qf /lib/modules/3.13.0-8-generic

The attached patch fixes DKMS to not call rpm to determine the architecture since that is quite useless.