Dear Thomas, dear listmembers, I know I owe answers (specifically to Thomas), so here you go: "Stock" kernel 2.6.21-185 (not in use any more, stem from kernel repositories at that time: Backlight full power, ipw3945 full power mode: 15,7 Watts power consumption (average) "Modified" kernel 2.6.21-190 (derived from above, only the following options activated: CONFIG_TICK_ONESHOT=y CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y CONFIG_USB_SUSPEND=y CONFIG_TIMER_STATS=y Backlight full power, ipw3945 full power mode: 12,6 Watts. Backlight full power, ipw3945 in low power consumption mode: 11,4 Watts. Backlight totally dimmed and ipw3945 in low power mode: 9,5 Watts so yes, you were right, the kernel options are not _that_ effective. But three Watts still remain an impressive value. What you say about stability of the kernel options - well, I can tell for my laptop only that since the day I switched to this kernel including the options mentioned above I haven't seen a single crash - the issues I had been facing before were mainly related to suspend issues. Nevertheless from my limited scope of view these options seem to do no harm - and a commenter in the wiki said that Ubuntu and Fedora would acitvate them by default. What regards the loading induced by zen-updater and opesuseupdater I will provide a follow-up soon. And, sorry, it would take tons of time to rebuild the kernel with each option activated separately to distinguish what contributes how much. If there is no urgent need for this I would be glad if you can survive without that information. Come back to me if you really really need it - and tell me the activation sequence you'd want to see. Hope this helps, sorry for the delay, take care Dieter Am Dienstag, 10. Juli 2007 19:54 schrieb Thomas Renninger: ****
Could you give us a pointer what kind of events happen how often, pls. And how they keep loading the battery. Through not going into Cx state Is it really that much? What have you modified? Simply booting the one or the other kernel saves you that much (-> I doubt that)? Do you use an USB mouse/keyboard that gets autosuspended with the other kernel?
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