On Tue, 2008-10-14 at 17:44 +0000, hyperair wrote: > Something worth noting is that depending on capacity of the swap and the > current memory usage, whether or not there is enough free space on the > swap to fit the total memory used can be transient. However, > gnome-power-manager only checks (with pm-is-supported --hibernate) for > the status of hibernate support only once, if I'm not mistaken. If it > fails once, it does not try again.
pm-is-supported just check to see of the kernel/uswsusp/tuxonice supports hibernation. We don't check anything else. > Another thing worth noting is that, supposing the user is using uswsusp, > compression is generally used on the swap image, so it would be pretty > hard to figure out whether it can actually the used memory can actually > fit into the swap or not, under certain circumstances, because the > compression ratio is unpredictable. It is undecidable no matter what method you use because all of them will try at hibernate time to free up enough memory to make a memory snapshot fit in the available swap space. On most systems, the majority of memory is used for caching purposes and can either be flushed or thrown away. > As for the case of tuxonice, I have absolutely no idea about how that > works, having never used it before. > > Perhaps it might be a good idea to file this bug upstream. It is not a bug we can fix. The general case is undecidable. > -- > Chow Loong Jin > -- Victor Lowther Ubuntu Certified Professional -- hibernate included in shutdown menu, even if it can't work. https://bugs.launchpad.net/bugs/223770 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
