I've been going around on some fun issues related to doing a full upgrade for the first time in a long time on a Lenovo E550 laptop running Debian testing.
The system now won't boot cleanly, but I can get in via a recovery mode (after which, I start network-manager manually), so I've continued experiment with different apt/dpkg invocations to see if I can get the system un-wedged. Where I'm up to in this story-- which I'm cutting short-- is I had just resolved a conflict between two packages like so: dpkg -i --force-overwrite /var/cache/apt/archives/gnuplot-data_5.2.6+dfsg1-1_all.deb Then tried this: apt-get install -f But that crashes like this: Setting up acpid (1:2.0.31-1) ... Job for acpid.service failed because of unavailable resources or another system error. See "systemctl status acpid.service" and "journalctl -xe" for details. invoke-rc.d: initscript acpid, action "restart" failed. Looking into this further: systemctl status acpid.service One learns: acpid.service - ACPI event daemon Loaded: loaded (/lib/systemd/system/acpid.service; disabled; vendor preset: enabled) Active: failed (Result: resources) Tasks: 0 (limit: 4915) CGroup: /system.slice/acpid.service Apr 18 11:33:38 tango systemd[1]: acpid.service: Got no socket. Apr 18 11:33:38 tango systemd[1]: acpid.service: Failed to run 'start' task: Invalid argument Apr 18 11:33:38 tango systemd[1]: acpid.service: Failed with result 'resources'. Apr 18 11:33:38 tango systemd[1]: Failed to start ACPI event daemon. Okay: "Got no socket"? netstat -np showed there were 60-something sockets in use, none obviously related to ACPI netstat -np | wc -l 71 I tried rebooting, to try to reduce the number of sockets in use... that cut this count to 36, but I was still seeing that "Got no socket" error: dpkg --configure -a (Interestingly, the netstat output goes up to 53 lines after after starting network-manager. No change in the problems behavior, though.) Any ideas? There's a bunch of "force" options, but I know of nothing that gets you past a "configure" problem like this.