Andrew Morton wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=11779
According to the manual, under Windows Vista (which is what came with
the box, but which I never used), this button is supposed to cycle
between 4 states:
* both disabled;
* bluetooth enabled & wifi enabled;
* bluetooth disabled & wifi enabled;
* bluetooth enabled & wifi disabled.
Unfortunately, under Linux (tested with Ubuntu's 8.10 pre-releases,
which includes a kernel based on 2.6.27-rc*, if I understand it
correctly), it is all or nothing: both disabled or both enabled.
If I launch powertop, it recommends to disable bluetooth with
"hciconfig hci down; rmmod hci_usb", but the led of bluetooth is still
lit and I fear that the device is still drawing power from the battery.
(Actually, it seems that the modules for bluetooth go renamed also).
If the LED is on, it's obviously drawing at least enough power to light
the LED :)
Is there any way to get it to disable completely the device?
This is a guess, but probably turning it on and off has nothing to do
with the bluetooth support, it's probably intended to be powered on and
off through ACPI or something - it's probably very specific to that
particular laptop.
However, "hciconfig hci down" should at least minimise any drain the
device is causing.
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