On a 14.1 64 bit laptop I don't seem to be able to get suspend-hybrid to work. According to pm-is-supported this mode is available on my laptop and I have put 00-use-suspend-hybrid in /etc/pm/config.d. Never-the-less whenever the battery runs out while suspended, on reboot the laptop does not seem to find the image on swap. Is there something else I need to do to make this work?

Thanks,
Brian

I fiddled with the hybrid suspend function a few years ago, and actually got it to work. The thing is that it isn't quite what you expect it to be. Most people would assume that it's the same as what you'd expect in windows where it writes the system state to disk and then goes to sleep, so that there is an image of the system state just in case the system runs out of battery while suspended to RAM. What the hybrid state in pm-utils actually does is utilize an older function in linux that suspends the system to RAM, and then suspends it to disk after a certain amount of time has elapsed on the rtc. You can set that amount of time through writing to a file in the /proc or /sys interface somewhere, but I can't remember where off the top of my head.

Fortunately, linux now also has the ability to suspend in the way that I think you want it to, although I'm not sure if you can do it through pm-utils. If you before , it should write an image to swap prior to going into suspend to RAM. At least that's how it works on recent kernels.

Bios has to support it too. I forget the mode number S number.

It could be that the battery runs out too fast for the system to correct.

Could be that action at power level is not this suspend.

bl0tt0,

You are correct in your assumption. I want it to always write to disk before suspending. Are you suggesting I do not use pm-utils but rather just use a script with those two commands?

Brian

Yep, I've been running my own custom acpi scripts for nearly a decade now, and rarely do anything through pm-utils, but I'm difficult like that . If you really want to use pm-utils, you could delve into using custom scripts in the right subdirectory of /etc/pm/.

Actually, just looking in my own /etc/pm/config.d/, there's a default file with a HIBERNATE_MODE value. If you switch that to "suspend", I'd bet you'd get the hibernate behavior you want from pm-utils when explicitly suspending to disk. Remember that the simultaneous suspend to disk and RAM feature came out in the 3.6 kernel release, but you should be fine on any recent Slackware version.

What it sounds like you are missing is the lilo.conf part. You have to make a change so it knows on boot where to pull your image. Details are here:
http://docs.slackware.com/howtos:sla...in:hibernation