Set minimum screen brightness level to 1, not 0

locker/src/main.rs

@@ -118,6 +118,7 @@ fn main() -> anyhow::Result<()> {
             (command_handlers.restart_handler)(&mut screensaver, None)?;
         }
         let conn_fd = borrow_raw_fd(conn_fd);
+            
 
         let mut pfds = Vec::new();
         pfds.push(PollFd::new(borrow_raw_fd(signal_fd.as_raw_fd()), PollFlags::POLLIN));

systemd/src/main.rs

@@ -92,5 +92,8 @@ async fn do_bscreensaver_command(command: BCommand) -> anyhow::Result<()> {
 
 async fn register_sleep_lock<'a>(manager_proxy: &ManagerProxy<'a>) -> anyhow::Result<zbus::zvariant::OwnedFd> {
     debug!("Registering sleep lock");
+    // ManagerProxy uses RawFd for the return value, which rust's type system thinks is an i32,
+    // which means the generated proxy uses the wrong dbus type signature.  So instead, use a raw
+    // Proxy instance and do it all ourselves.
     Ok(manager_proxy.inhibit(InhibitType::Sleep, "bscreensaver", "blank before sleep", "delay").await?)
 }