$ ls /etc/hotplug/blacklist.d alsa-base libsane libsane.dpkg-old linux-sound-base_noOSS
but hotplug does not ignore .dpkg-old files in /etc/hotplug/blacklist.d/ (Debian bug #299205)
$ ls /etc/hotplug/ blacklist. d base_noOSS
alsa-base libsane libsane.dpkg-old linux-sound-
but hotplug does not ignore .dpkg-old files in /etc/hotplug/ blacklist. d/
(Debian bug #299205)