OK, I get it work now. The 14.04 kernel is missing the firmware for the
bluetooth hardware.

I have downloaded the firmware, renamed and copied it appropriately and
now bluetooth is working:

wget 
http://wielki.tk/vostro/debs/bt-bcm43142-onereic_0.0+20111116somerville2_amd64.deb
 
dpkg-deb -x bt-bcm43142-onereic_0.0+20111116somerville2_amd64.deb bt-bcm43142
 
sudo cp bt-bcm43142/lib/firmware/BCM43142A0_001.001.011.0028.0036.hcd 
/lib/firmware/fw-105b_e065.hcd
 
sudo rmmod btusb
 
sudo modprobe btusb

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https://bugs.launchpad.net/bugs/1242079

Title:
  [Lenovo ThinkPad Edge E135] Bluetooth: can't load firmware, may not
  work correctly

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