Hi all. When a system wakes from suspend, the Bluetooth adapter needs to be explicitly powered on. This can be conveniently done by a systemd service file, as described for example on Archlinux wiki [1] (the systemd service file at the bottom of the section).
The hciconfig binary used to work up to kernel 4.1.5, with 4.1.6 and up it stops working with Bluetooth LE (4.0) devices. The tool is deprecated, instead a dbus call (ie. the commented line in the systemd service file in [1]) or another tool, btmgmt, can be used to power on the Bluetooth adapter. The problem is neither of these tools work at the time systemd invokes them, they require the bluetooth daemon to reinitialize itself after resume (at least for the dbus call it needs to listen on dbus, not sure about the btmgmt tool). Normally systemd handles this gracefully, but after resume, the required services appear ready to systemd while they aren't. What is the proper solution to this problem? Best Regards Lukas [1] https://wiki.archlinux.org/index.php/Bluetooth#Bluetoothctl _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
