On Fri, May 18, 2012 at 5:37 PM, Volker Armin Hemmann <[email protected]> wrote: > Am Freitag, 18. Mai 2012, 17:26:10 schrieb Canek Peláez Valdés: >> On Fri, May 18, 2012 at 5:09 PM, Volker Armin Hemmann >> >> <[email protected]> wrote: >> > Am Freitag, 18. Mai 2012, 22:42:59 schrieb Ignas Anikevicius: >> >> On 18/05/12 20:59, Alex Schuster wrote: >> >> > Suspend to ram (using the hibernate-ram command from >> >> > sys-power/hibernate-script) seems to work better. >> >> >> >> What about pm-utils? Does it work better or worse than hibernate-script. >> >> I had 0 problems with it during entire usage of linux, whereas with the >> >> hibernate script package I had some issues... >> >> >> >> And yes, I am usually suspending to ram, but I was just thinking about >> >> possibilities to make my computer boot faster in the cases I really need >> >> to do a restart. :) >> >> >> >> Cheers, >> >> Ignas >> > >> > I just do echo mem > ... or click on the 'Ruhezustand' button in KDE. >> > Results in the same. Well working suspend-to-ram. With fglrx. X running >> > etc pp. >> With upower to suspend-to-ram you can just: >> >> dbus-send --system --print-reply --dest="org.freedesktop.UPower" >> /org/freedesktop/UPower org.freedesktop.UPower.Suspend >> > > which is way harder to type and memorize than: > echo mem > /sys/power/state
Yeah. However, he Dbus method works as a simple user; the /sys/power/state thing you can only do it as root. At least in my system. >> or use the "Suspend" option in GNOME 3 (GNOME uses upower). That I >> already knew. What I didn't knew was that >> >> dbus-send --system --print-reply --dest="org.freedesktop.UPower" >> /org/freedesktop/UPower org.freedesktop.UPower.Hibernate >> >> works as well for suspend-to-disk. I hadn't hibernated my laptop in >> ages, it's good to know it still works. I use systemd+> dracut, which I >> suppose it matters for the hibernate option. > > no, not really... The restore-from-hibernate requires booting the kernel in a special way to load the memory state from the swap partition. That requires special handling from the init process and the initramfs; we had a discussion some weeks ago about genkernel not handling this correctly. Maybe systemd has nothing to do with restore-from-hibernate working (I don't know); but dracut surely does. It has a module called "resume" that seems to handle this. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
