XO-1 Build 802 doesn't turn off speaker amplifier
pgf at laptop.org
Wed Oct 14 22:45:30 EDT 2009
> On Sat, Oct 10, 2009 at 11:00:29PM +0100, Tiago Marques wrote:
> > As anyone ever measured this?
> I've just measured it now.
> Unfortunately my meter lacks accuracy on this range, but in two tests,
> with or without backlight, without any battery, I saw a 20mA (+/- 10mA)
> improvement as a result of disabling the amplifier with alsamixer. The
> hiss from the speakers also went away. (I had to place my ears within a
> few inches to be able to hear the change). The input voltage 12.06V.
this sounds worthy of a trac ticket, as well as the attention of any
> There was no change to the current consumed during suspend.
> James Cameron
> Devel mailing list
> Devel at lists.laptop.org
paul fox, pgf at laptop.org
More information about the Devel