On Mon, 3 Jan 2011 00:35:02 -0600 Robby Workman <r...@rlworkman.net> wrote:
> Hi Victor and list, > > I think I've encountered a bug in pm-powersave, or maybe it's > a bug in how the powersave hooks are processed, or perhaps I'm > just being braindead ;-) but here's a summary: > > My laptop drive doesn't like the default DRIVE_POWER_MGMT_BAT > value of "1" - it goes to sleep every 30 seconds and causes > a delay of 1-2 seconds that makes the system feel like it's > crawling along. > > From pm-powersave(8): > FILES > /etc/pm/power.d/, /usr/lib/pm-utils/power.d/ > When you run pm-powersave it combines the scripts in > these two directories and executes them in sorted order. > If both directories contain a script with the same name, > the one in /etc/pm/power.d/ has a higher precedence and > only this one will be executed. > > > Therefore, I grabbed $libdir/pm-utils/power.d/harddrive, placed > a copy at /etc/pm/power.d/harddrive, made sure it retained its > executable permissions, and edited it down to the following: > > #!/bin/sh > [ -x /sbin/hdparm ] || exit $NA > DRIVE_WRITE_CACHE_BAT=0 > DRIVE_POWER_MGMT_BAT=128 > # Default devices to operate on > DRIVE_LIST="/dev/[hs]d[a-z]" > > However, when I unplug the AC adapter (or run "pm-powersave true" > manually), the value shown with "hdparm -B /dev/sda" is not 128; > it stays at whatever it was previously. /var/log/pm-powersave.log > shows this: > > Running hook /etc/pm/power.d/harddrive true: > > /etc/pm/power.d/harddrive true: success. > > If I remove the /etc/pm/power.d/harddrive file completely, the > value shown by hdparm afterward is the default value defined in > $libdir/pm-utils/power.d/harddrive, and this is what shows in > /var/log/pm-powersave.log: > > Running hook /usr/lib64/pm-utils/power.d/harddrive true: > Enabling power management for /dev/sda...Done. > > /usr/lib64/pm-utils/power.d/harddrive true: success. > > > Am I doing something wrong, or is there a bug here? Well, just damn. Of course, I was doing something wrong. It would be *extremely* helpful if I hadn't deleted the part of the harddrive script that actually *does* something. Sheesh. Why can't this sort of mistake ever be noticed *before* I mail a public list? :-) -RW _______________________________________________ Pm-utils mailing list Pm-utils@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/pm-utils
