Comment # 56 on bug 925873 from Takashi Iwai

So, let me list and check each sleep.d hook:

00logging:
This one is obviously superfluous, we have other logging method.  Drop.

00powersave:
The power-save is mostly irrelevant with sleep nowadays.  Drop.

02rtcwake:
This is an own RTC alarm setup.  Do we have an alternative in systemd or else?

06autofs:
The autofs hook should be in systemd.  I thought we have some hook in
NetworkManager, though.  Need to check.

30s2disk-check:
This is likely superfluous.  A sanity check would be nice to have in systemd,
too, but not mandatory.  If no enough page can be written, the hibernation
aborts by itself.

45pcmcia:
This is superfluous.  The PCMCIA kernel subsystem itself supports PM.  Drop.

70rcnetwork:
Likely superfluous as 06autofs.  But need to check.

75modules:
This is an optional hook, and I guess some users have its own setup as a
workaround.  Any systemd alternative?

90clock:
This is also an optional hook.  This might be interesting to have in systemd,
too.

94cpufreq:
Drop.  It's a kernel's job, after all, and a regression should be reported to
kernel.

95led:
This ACPI proc is obsoleted.  Drop.

98video-quirk-db-handler:
This one is the biggest one.  It's basically only for old non-KMS graphics.  If
any, the hook and the existing video-quirks/* db can be in a package like
pm-utils-legacy or such, as a possible rescue.

99info:
Drop, just an echo.

99video:
This is again for old systems, and can be possibly an opt-in together with
98video-quirk-db-handler.

99Zgrub:
The same functionality should have been already in grub2 and/or systemd.  Drop
(after fixing).