make install creates /etc/depmod.conf to prefer updates/ over kernel/ modules. According to depmod manpage, /etc/depmod.conf is not even considered. This is valid for at least http://www.kernel.org/pub/linux/kernel/projects/backports/stable/v3.15.1/backports-3.15.1-1.tar.xz Had to move /etc/depmod.conf to /etc/depmod.d/backports.conf (and changed it to "search updates built-in"). After next depmod -a module from updates/ tree got preferred, before it was ignored. Please fix.
closing bugs changed >1year ago as obsolete