The main problem is for sure in the adapter BCM2035 and bluez. See here : https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/453885
Downgrading to bluez 4.60 is the only solution... Solution that won't work with the LTS Trusty. Then, I can't do upgrade to this LTS. I'm available to test commands and give you logs. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1203565 Title: 045e:009c [H87-PRO] Microsoft Keyboard Elite for Bluetooth dead keys problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1203565/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs