@@ 27,3 27,9 @@ Additionally, for building:
* `pkg-config`
* `wlr-protocols`
* `wayland-scanner`
+
+## Debugging
+
+Setting `G_MESSAGES_DEBUG=GtkLock-DPMS` in the environment before launching
+`gtklock` will print debugging messages to standard error. Such debug log is
+valuable when reporting issues.