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Solaar
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Solaar/docs/installation.md

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Manual installation

Requirements

You should have a reasonably new kernel (3.2+), with the logitech-djreceiver driver enabled and loaded; also, the udev package must be installed and the daemon running. If you have a modern Linux distribution (2011+), you're most likely good to go.

The command-line application (bin/solaar-cli) requires Python 2.7.3 or 3.2+ (either version should work), and the python-pyudev/python3-pyudev package.

The GUI application (bin/solaar) also requires Gtk3, and its GObject Introspection bindings. The Debian/Ubuntu package names are python-gi/python3-gi and gir1.2-gtk-3.0; if you're using another distribution the required packages are most likely named something similar. If the desktop notifications bindings are also installed (gir1.2-notify-0.7), you will also get desktop notifications when devices come online/go offline.

Installation

Normally USB devices are not accessible for r/w by regular users, so you will need to do a one-time udev rule installation to allow access to the Logitech Unifying Receiver.

You can run the rules.d/install.sh script from Solaar to do this installation automatically (it will switch to root when necessary), or you can do all the required steps by hand, as the root user:

  1. copy rules.d/99-logitech-unfiying-receiver.rules from Solaar to /etc/udev/rules.d/

    By default, the rule makes the Unifying Receiver device available for r/w by all users belonging to the plugdev system group (standard Debian/Ubuntu group for pluggable devices). It may need changes, specific to your particular system's configuration. If in doubt, replacing GROUP="plugdev" with GROUP="<your username>" should just work.

  2. run udevadm control --reload-rules to let the udev daemon know about the new rule

  3. physically remove the Unifying Receiver, wait 10 seconds and re-insert it

    This is necessary because if the receiver is already plugged-in, it already has a /dev/hidraw? device node, but with the old (root:root) permissions. Plugging it again will re-create the device node with the right permissions.

  4. make sure your desktop users are part of the plugdev group, by running adduser <linux user> plugdev as root