stop USB charging
Lennart Sorensen
lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org
Wed Mar 4 19:02:25 UTC 2009
On Wed, Mar 04, 2009 at 11:16:38AM -0500, jing wrote:
> Does anyone know how to turn off device charging via USB but still
> keep the connection alive? My Google-foo fails me. Is there some
> file in /sys that can turn off USB device charging? When traveling I
> like to tether my iPhone over USB for Internet connectivity. But the
> phone insists on charging itself, which puts a huge drain on my
> laptop.
USB ports must provide at least 100mA of power. You can not disable
that as far as I know, unless you actually shut down the port completely.
If you want a device to not draw power, then make the device not draw
power. Good luck on that.
--
Len Sorensen
--
The Toronto Linux Users Group. Meetings: http://gtalug.org/
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://gtalug.org/wiki/Mailing_lists
More information about the Legacy
mailing list