> > If there was no user activity indeed (and not too many applications > running), then the PS/2 part is troublesome indeed (but ohci1394 / audio > has too many wakeups, too: any audio output running?). >
strange i wasnt using anything like vlc or some audio output at that time. hmm..so i am having a hard time as i am unable to use my brand new laptop for more than 2 hrs max while on the go. can you tell me how do i start debugging this? > Not sure either. We probably need to keep migrating towards a fully > tickless kernel and keep reducing activity. > how do i do that? > Most likely that's due to hdparm -B . > the output of "hdparm -B" is: -B: bad/missing power-management-mode value (1..255) what does this mean? and btw, the core cause of this poor battery life is the large amount of interrupts only or could be something else? i had also tried booting with "acpi=off" an "acpi=noirq" which marginally changed the consumption about 2 watts less. thanks vrinda
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