Re: [Bluez-users] Linux control of bluetooth radio

["Jeff Wilson" <jazzbotley@gmail.com>]

On 5/29/06, Marcel Holtmann <marcel@holtmann.org> wrote:
> Hi Peter,
>
> > I have a dual-boot (WinXP and Mandriva w/ 2.6.14) Dell
> > M70 laptop with an internal Bluetooth daughter card.
> > It would seem that I can use WinXP to disable the
> > radio on the Bluetooth card.  When I then boot into
> > Linux, the BT card is detected and hci0 is initialised
> > but Bluetooth doesn't work.
> >
> > Is there a way to turn the BT radio on and off under
> > Linux ?  (hciconfig up/down and reloading the kernel
> > module doesn't seem to work and there's no /proc
> > interface)
>
> check /proc/bus/usb/devices if the Bluetooth is present there. Otherwise
> you need to find the switch to activate Bluetooth with a Dell laptop. I
> don't have a Dell machine, so I don't know what's the magic trick.
>
> Regards
>
> Marcel
>
>

On my Dell Latitude D810 (embedded CSR BlueCore4) the magic trick is
Fn-F2 to toggle the radio for both the 802.11 wi-fi *and* the embedded
Bluetooth.  Sadly, because my workplace paid for the laptop, I do not
yet have Linux on the 810 so I don't know if that keystroke is
interpreted by software drivers or hardware.  My 810 has a wi-fi LED
and a Bluetooth LED that match the toggled state of the radio.

There may also be something in the BIOS, I'll try to check that on the
next reboot and post what I find.

    hth,
      jw


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