* (unknown)
@ 2008-12-28 11:24 Toralf Förster
2008-12-28 13:43 ` Bluetooth driver vs RFKILL state LED Tony Vroon
0 siblings, 1 reply; 2+ messages in thread
From: Toralf Förster @ 2008-12-28 11:24 UTC (permalink / raw)
To: linux-acpi; +Cc: ibm-acpi-devel
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Hello,
I'm wondering why at my ThinkPad T41 the bluetooth LED is on even if I did not
compiled bluetooth support into the kernel nor as module.
More data:
tfoerste@n22 ~ $ uname -a
Linux n22 2.6.27-gentoo-r7 #6 Sun Dec 28 12:08:24 CET 2008 i686 Intel(R)
Pentium(R) M processor 1700MHz GenuineIntel GNU/Linux
tfoerste@n22 ~ $ cat /proc/acpi/ibm/bluetooth
status: enabled
commands: enable, disable
tfoerste@n22 ~ $ zgrep CONFIG_BT /proc/config.gz
# CONFIG_BT is not set
--
MfG/Sincerely
Toralf Förster
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Bluetooth driver vs RFKILL state LED
2008-12-28 11:24 (unknown) Toralf Förster
@ 2008-12-28 13:43 ` Tony Vroon
0 siblings, 0 replies; 2+ messages in thread
From: Tony Vroon @ 2008-12-28 13:43 UTC (permalink / raw)
To: Toralf Förster; +Cc: linux-acpi, ibm-acpi-devel
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Toralf Förster wrote:
> I'm wondering why at my ThinkPad T41 the bluetooth LED is on even if I did not
> compiled bluetooth support into the kernel nor as module.
That LED indicates whether the Bluetooth radio is enabled (powered up,
it is a USB device). Consider it like a light socket. You don't have a
working bulb in there, but you can still switch the socket on & off.
You see the results of your switching the moment you screw in a working
lightbulb (load your Bluetooth driver).
It would in fact be a layering violation to care about whether or not a
Bluetooth driver is loaded when switching the radio on & off. If you
want your Bluetooth to start out off and remain off, you should set your
BIOS up accordingly.
Regards,
Tony V.
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