[via November archive, R. Poss replies to David Goodyear] >Hello, > I have been trying to get hibernation mode working on several >different laptops of different brands (IBM, Toshiba), and unfortunately >there is (apparently) no way to have it work under linux. I expect some >messy APM BIOS hook into m$-win, for which I have (yet) not found any >documentation/specification. Moreover, I have been asking some IBM people >who told be that the hibernation file must be located on a DOS partition, >and that it cannot be recognized (I am not sure of it, the explanation >was very inaccurate) when not running DOS.
I have a Ricoh Magio (which I am told Europeans are sold as the Thinkpad 235 - at any rate, it has a Thinkpad-like BIOS) and I can tell you, yeah, that's innacurate. All you need is a FAT filesystem of sufficient size to hold the hibernate volume. It does not need to have a working copy of DOS, or anything else on it. My 96 Mb box uses a little over 99 M for its hibernate volume, which shows up (if you look at it via DOS, or mount it up) as a hidden file. In theory one could hibernate while doing something interested, then awaken and look at the dump, but I've never actually looked that deeply. (I'm a userland type myself.) What I do not know, because I set it up correctly early on, is whether it needs to be the first partition, or whether you can just use ext2resize and sacrifice a scrap of your /tmp volume to it. > Although this last fact is quite IBM-specific (for Toshiba's I >have only seen dedicated partitions on the disk for the hibernation >space), I suspect that the APM BIOS is quite stuck when the Linux kernel >is loaded and running. Btw I always suspended fine before I got it figured out; only hibernate needs the file. >For short, the built-in "hibernation mode" in our laptops is, in many >cases, quite unuseable with Linux. (Any success with other models/brands >would be appreciated, I'd really like to know if there are any) Ricoh Magio E works great. Well supported video. Haven't played with sound yet (too busy) but am told it's an ESS AudioDrive 1879, and a friend who also has a Magio has sound working, so even if that's wrong, whatever it has is something that Linux supports. > However, Tobias Bachmor <[EMAIL PROTECTED]> reported the >existence of a "hibernation feature" for the kernel. I am using this >feature daily, and it works quite well. Explanations on it follow. >For any people that actually rely on the use of an "hibernation mode", >this kernel feature does a good job and can, in most cases, replace nearly >completely the built-in feature of the laptop. See also below for the >present bugs and caveats. > >Raph I have not tried this; not sure it's worth getting a mere 100 MB back. The question is whether this can add full hibernation to older laptops which only did suspend? That'd be cool. -* Heather Stern * Starshine Technical Services * [EMAIL PROTECTED] *-
