Bluetooth
Pairing
Bigger desktop environments will usually provide a bluetooth management system.
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Alternatively, using pkgs.blueman, it is possible to get a tray icon blueman-applet or use the manager directly using blueman-manager.
Pairing without GUI tools
When not using a desktop-manager, configuring the device from the command line can be done following the ArchWiki instructions, as follows.
$ bluetoothctl
[bluetooth] # power on
[bluetooth] # agent on
[bluetooth] # default-agent
[bluetooth] # scan on
...put device in pairing mode and wait [hex-address] to appear here...
[bluetooth] # pair [hex-address]
[bluetooth] # connect [hex-address]
Bluetooth headsets with PulseAudio
The package used for PulseAudio has to be pkgs.pulseaudioFull, which includes bluetooth support.
{
hardware.pulseaudio = {
enable = true;
package = pkgs.pulseaudioFull;
};
hardware.bluetooth.enable = true;
}
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Tip
In order to affect your NixOS system by your nix-language-specific changes you must first evaluate it:
$ nixos-rebuild switch --use-remote-sudo |
Either restart the system for PulseAudio to load the bluetooth module, or restart your local instance of PulseAudio by running pkill ^pulseaudio$.
Ensure PulseAudio has loaded bluetooth modules by using pactl list | grep -i Name.*module.*blue. Bluetooth modules should be present in the list.
Managing the audio interface
Using pavucontrol, the headset profile can be changed to "High Fidelity Playback (A2DP Sink)" in the Configuration tab.
The default sink can be changed in the Output Devices tab. clicking on the right most button, which it title Set as fallback.
Managing the audio interface using pacmd
Setting the card to A2DP
$ pacmd set-card-profile "$(pactl list cards short | egrep -o bluez_card[[:alnum:]._]+)" a2dp_sink
Setting the bluetooth sink as default
$ pacmd set-default-sink "$(pactl list sinks short | egrep -o bluez_sink[[:alnum:]._]+)"