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I used the apmd on my Prostar 1200 (Tiwanese OEM for certain Dell and Gateway models) without difficulty. Since upgrading to 6.1, I've noticed two problems: 1. On user-suspend, the first time I press the suspend key sequence, I get a message "User suspend requested" or some such on the console but nothing happens. The second time I hit the key sequence the system suspends normally. 2. When I suspend my system (I use hibernation mode ... yeah, yeah, I know it isn't officially supported, but it works about 97% of the time) when the system resumes, it no longer updates the system clock to sync with the HW clock. I get a message saying how long the system was suspended (as an adjustment of minutes) but this the system doesn't correct the clock. For 1, I simply must hit the suspend twice. For 2, I need to figure out how to get the "proxy" stuff in the man page working, and put in a "hwclock --hctosys" command and that should fix it. If you're curios, the limitations I've found to hibernation are: - Don't leave your terminal in X windows (do an Alt-F1 before suspending). - Don't leave any network apps running (servers in listen mode seem fine, but Netscape or Applix will hose you about %40 of the time).
I've written an "apmd_proxy" script that resolves the problem with the date and with the hibernation thing. I stress tested it by loading bunches of X and networking apps and suspending from the X console (usually doing hangs the machine about 50% of the time on restart). Here's the script: #!/bin/bash # # apmd_proxy This shell script takes care of starting and stopping # various programs and services prior to suspending and # resuming. # # Source function library. . /etc/rc.d/init.d/functions # Source networking configuration. . /etc/sysconfig/network SUSPEND_DATA=/var/run/apmd.suspend.data # See how we were called. case "$1" in start) # Start daemons. ps ax|egrep -v 'ps ax|egrep|perl' |perl -n -e '$_ =~ /^\s*(\d+).*/;print "$1\n";'> $SUSPEND_DATA ;; stop) # Stop daemons. [ -e $SUSPEND_DATA ] && rm $SUSPEND_DATA ;; suspend) # Suspend requested. #[ -e /tmp/suspend.log ] || touch /tmp/suspend.log #echo "Stating Suspend (`date`)" >>/tmp/suspend.log #ps ax > /tmp/presuspend for i in `ps ax|egrep -v 'ps ax|egrep|bash|perl|kill|cardmgr|apmd' |perl -n -e '$_ =~ /^\s*(\d+).*/;print "$1\n";'`; do # echo -n `ps ax|grep $i`>> /tmp/suspend.log # grep $i $SUSPEND_DATA >/dev/null || echo 'STOPPED' >> /tmp/suspend.log # grep $i $SUSPEND_DATA >/dev/null && echo 'RUNNING' >> /tmp/suspend.log sync grep $i $SUSPEND_DATA >/dev/null || kill -STOP $i done #echo "System quiet... suspending (`date`)" >> /tmp/suspend.log #ps ax > /tmp/postsuspend sync ;; resume) # Resume requested. #[ -e /tmp/suspend.log ] || touch /tmp/suspend.log #echo "Stating Resume (`date`)" >>/tmp/suspend.log /sbin/hwclock --hctosys #echo "Time Corrected (`date`)" >> /tmp/suspend.log #ps ax > /tmp/preresume for i in `ps ax|egrep -v 'ps ax|egrep|bash|perl|kill|cardmgr|apmd' |perl -n -e '$_ =~ /^\s*(\d+).*/;print "$1\n";'`; do # echo -n `ps ax|grep $i`>> /tmp/suspend.log # grep $i $SUSPEND_DATA >/dev/null || echo 'RESTARTING' >> /tmp/suspend.log # grep $i $SUSPEND_DATA >/dev/null && echo 'RUNNING' >> /tmp/suspend.log sync grep $i $SUSPEND_DATA >/dev/null || kill -CONT $i done #echo "All processes restored (`date`)" >> /tmp/suspend.log #ps ax > /tmp/postresume ;; standby) ;; *) echo "Usage: apmd {start|stop|suspend|resume|standby}" exit 1 esac -------------------------- You can remove the echos... they are simply the debugging info (and slow things down a bunch). The idea is that when apmd is called, all the things that come before it are "safe" and should not be touched (things like init). You can also add things to the egrep that should be ignored (like the bash shell that is running the script :^). I'm sure it could be cleaned up a lot, but it's a quick hack that works and I thought it would give y'all a starting place at a fix for hibernating machines like mine. BTW, it also fixes the time problem with a call to hwclock. I'm not sending this to the apmd developers. I figured y'all would clean it up a bit and you would be donating the cleaned copy. Don
Have a look at the apmd package in rawhide - it solves the hibernation problem and can work around some hardware problems (such as broken harddisks that need hdparm settings after a suspend-to-disk).