XO-1 Build 802 doesn't turn off speaker amplifier

Paul Fox pgf at laptop.org
Wed Oct 14 22:45:30 EDT 2009

james wrote:
 > 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
F11-on-XO1 folks.


 > There was no change to the current consumed during suspend.
 > -- 
 > James Cameron
 > http://quozl.linux.org.au/
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 paul fox, pgf at laptop.org

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