power management: laptop-mode-tools, pm-utils and kde powerdevil?

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https://bbs.archlinux.org – I have read (I think) all of the relevant wiki pages. (But I could be wrong - they seem to criss-cross in various ways and I go in circles!) I've also googled what I can, read the man pages and been through all the config files I could find.What I planned to do: do power management with acpid and laptop-mode-tools with pm-utils, which I believed complemented the others. (After disabling pm-utils power.d scripts.)Problem: kde's power management seems not to bear any relation to anything else, including the possibilities which appear to be offered by my hardware. This power management (HowTos)