That should be done by the kernel itself. In the meantime you can put a script into /lib/systemd/system-sleep/, they work much like the old pm-utils/sleep.d/ scripts. See "man systemd-sleep" for details.
That should be done by the kernel itself. In the meantime you can put a script into /lib/systemd/ system- sleep/, they work much like the old pm-utils/sleep.d/ scripts. See "man systemd-sleep" for details.