On Thu, 2009-01-29 at 07:36 -0800, Pedro R wrote: > Sorry for coming into the discussion like this, but i joined this mailing > list because of exactly the same problem. > > This hdparm issue is distro specific, i'm sure hdparm upstream will not want > to handle it, because honestly they don't have to. Fixing it in pm-utils is > pernicious, because this issue only affects laptops, but i still think it's > the best way.
Sorry, but this is the sort of hook that I want to have migrated out of pm-utils. We provide a pkg-config hook to make it easy for other packages to integrate with pm-utils precisely to make it easy for the distro maintainers and other projects to use pm-utils. > This is a major issue going on since 2005 and nobody seems to want to get > their hands dirty fixing it. It would be great to include this in pm-utils, > since the collateral overhead for desktop computers is not that big either. I agree, and the best way to do that is to is to get it integrated into the hdparm package, either at the distro level or by the hdparm folks themselves. > Anyway the hook should be executed on resume (but not on hibernate / standby) > and on power change: battery -> ac adaptor and ac adaptor -> battery, because > when on battery the setting should be -B 128 (because of physical shocks - > for an explanation refer to the load_cycle_count issue on google) and on ac > power it should be -B 254. To do this, the hook should not rely on other than > the kernel itself. Like this: > > if cat /proc/acpi/ac_adapter/ACAD/state | grep 'off-line' ; then > hdparm -B 128 $dev > else > hdparm -B 254 $dev Dan has already brought this back up, but you are conflating power management with suspend/resume handling. This code belongs in a pm-powersave hook, not in pm-suspend. If you take a look at the powersave-hooks branch, on http://git.freedesktop.org/pm-utils/, you ca nsee what I am talking about. > If Pacho Ramos won't mind sending me his hook, i can complete it this way. > > Pedro Ribeiro > > -- Victor Lowther RHCE# 805008539634727 LPIC-2# LPI000140019 _______________________________________________ Pm-utils mailing list Pm-utils@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/pm-utils
