sridhar wrote: > On 1 February 2012 15:43, Paul Fox <[email protected]> wrote: > > sridhar wrote: > > > We are considering disabling Automatic Power Management because of its > > > impact on collaboration and 3G connectivity. > > > > > > What kind of battery life can we expect from an XO-1.5 with Automatic > > > Power Management disabled as opposed to enabled? I understand that > > > this can vary wildly with usage, but is there an average estimate? > > > > he's on a very long plane flight, but i'll try and channel richard: > > > > "it depends." > > > > how did i do? :-) > > I was trying to head that off with my "I understand that..." statement :) > > > > you're probably in as good a position to answer this as we are, since > > you have a better idea of your system activity load. with automatic > > power management turned off, a 1.5 is good for several hours of use, > > where "several" is intentionally vague. backlight on full? wireless > > on? continuous cpu activity? etc. > > > > would it help to disable automatic power management only when specific > > Activities are running? only when certain kinds of collaboration are > > in effect? only when certain drivers are active? > > We've been thinking of doing this for when 3G connections are active > [1]. It might be interesting to also tie this into Sugar's > collaboration mechanism and disable power management when a session is > active.
in http://dev.laptop.org/ticket/10708 i suggested adding the 3G modem's USB vendor/product ID to /etc/powerd/flags/usb-inhibits. this would stop automatic power management while the device is present. would that help? paul > > Sridhar > > > [1] https://dev.laptop.org.au/issues/1029 > > > > Sridhar Dhanapalan > Engineering Manager > One Laptop per Child Australia =--------------------- paul fox, [email protected] _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
