[Bug 1072118] Re: After upgrade to Kubuntu 12.10 bluetooth status is incorrect and works only after service bluetooth stop / start cylce

[jhoechtl]

After some more investigations I can come up with this consistent
behaviour:

If I reboot the laptop of with bluetooth enabled, it will come up the
next time working. Working means the status is correctly recognized by
the Kubuntu applet and bluetooth is working.

If I disable Bluetooth, the hardware  display on the laptop  remains
lit. In Kubuntu 12.04, the display went off. However, the device is
properly unpowered, as it saves 4 Watts (checked with meter). After
reboot, the state is correctly remembered, that means the device is
unpowered (the hardware indication is still lit btw.) However, the
bluetooth icon in panel will recognize the adapter as powered.
Unpowering has no effect and doesn't work: If I choose unpower in the
applet, simply nothing happens, it remains thinking it is still powered,
while it is unpowered. In other words, there is not way to power
bluetooth with the applet.

service bluetooth stop
service bluetooth start

will not bring bluetooth back ... it will remain unpowered and the
applet thinking it is powered.

However, issuing

sudo hciconfig hci0 reset

WILL power bluetooth AND the applet back working, so that it can be
powered / unpowered.

So I think the bluetoothd stack doesn't recognize the unpowered adapter,
yet correctly remains it unpowered (state keeps preserved).

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https://bugs.launchpad.net/bugs/1072118

Title:
  After upgrade to Kubuntu 12.10 bluetooth status is incorrect and works
  only after service bluetooth stop / start cylce

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