Debian, HP and bluetooth

add non-free packets /etc/apt/sources.list

deb http://ftp.debian.org/debian/ jessie main contrib non-free
deb-src http://ftp.debian.org/debian/ jessie main contrib non-free

sudo aptitude update

sudo aptitude install firmware-atheros blueman

service bluetooth restart

Debian, Viber and plugin "xcb"

If we got message:
This application failed to start because it could not find or load the Qt platform plugin "xcb".

Just install libqt5gui5

apt-get install libqt5gui5