after apt-get install

Nov 26 10:22:22 servername systemd-modules-load[22993]: Failed to find module 'pci-hotplug'
Nov 26 10:22:22 servername systemd-modules-load[22993]: Failed to find module 'acpiphp'

Solution

Comment lines

/etc/modules-load.d/modules.conf1

#pci-hotplug
#acpiphp