Ubuntu 14.04 reached end of standard support in April 2019:
https://wiki.ubuntu.com/Releases
If you would like to continue with free support then please update to a
newer Ubuntu version and tell us if the problem still occurs.
If you would like to continue with Ubuntu 14.04 then there is a
** Description changed:
In previous versions (= Raring) I was able to turn on the bluetooth (on
Raring I had to install blueman). Currently my device is not detected.
Commands such as `rfkill list`, `hcitool dev`, `lsusb` won't show any
bluetooth device.
My laptop is an hp nx7400.
+
I managed to turn on the bluetooth device from within Debian wheezy, and
now the bluetooth works on Ubuntu too. Kind of a big workaround...
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https://bugs.launchpad.net/bugs/1283621