diff --git a/src-tauri/src/display/manager.rs b/src-tauri/src/display/manager.rs
index 06ed6b2..6de47aa 100644
--- a/src-tauri/src/display/manager.rs
+++ b/src-tauri/src/display/manager.rs
@@ -71,14 +71,10 @@ impl DisplayManager {
     fn subscribe_setting_request(&mut self) {
         let displays = self.displays.clone();
         let displays_changed_sender = self.displays_changed_sender.clone();
-        log::info!("start display setting request handler");
         let handler = tokio::spawn(async move {
             let channels = BoardMessageChannels::global().await;
-
             let mut request_rx = channels.display_setting_request_sender.subscribe();
 
-            log::info!("display setting request handler started");
-
             while let Ok(message) = request_rx.recv().await {
                 let displays = displays.write().await;
 
@@ -88,7 +84,6 @@ impl DisplayManager {
                     continue;
                 }
 
-                log::info!("display setting request received. {:?}", message);
 
                 let display = display.unwrap().write().await;
                 let result = match message.setting {
@@ -104,8 +99,6 @@ impl DisplayManager {
 
                 drop(display);
 
-                log::info!("display setting request handled. {:?}", message);
-
                 let mut states = Vec::new();
                 for display in displays.iter() {
                     let state = display.read().await.state.read().await.clone();
diff --git a/src-tauri/src/rpc/board.rs b/src-tauri/src/rpc/board.rs
index 4f64f3a..03c0b44 100644
--- a/src-tauri/src/rpc/board.rs
+++ b/src-tauri/src/rpc/board.rs
@@ -1,11 +1,11 @@
 use std::{sync::Arc, time::Duration};
 
 use paris::{error, info, warn};
-use tokio::{io, net::UdpSocket, sync::RwLock, time::timeout, task::yield_now};
+use tokio::{io, net::UdpSocket, sync::RwLock, task::yield_now, time::timeout};
 
 use crate::rpc::DisplaySettingRequest;
 
-use super::{BoardConnectStatus, BoardInfo, UdpRpc};
+use super::{BoardConnectStatus, BoardInfo};
 
 #[derive(Debug)]
 pub struct Board {
@@ -42,27 +42,28 @@ impl Board {
 
             let board_message_channels = crate::rpc::channels::BoardMessageChannels::global().await;
 
-            let display_setting_request_sender = board_message_channels.display_setting_request_sender.clone();
+            let display_setting_request_sender = board_message_channels
+                .display_setting_request_sender
+                .clone();
 
             loop {
                 match socket.try_recv(&mut buf) {
                     Ok(len) => {
                         log::info!("recv: {:?}", &buf[..len]);
                         if buf[0] == 3 {
-                            let result = display_setting_request_sender.send(DisplaySettingRequest {
-                                display_index: buf[1] as usize,
-                                setting: crate::rpc::DisplaySetting::Brightness(buf[2]),
-                            });
+                            let result =
+                                display_setting_request_sender.send(DisplaySettingRequest {
+                                    display_index: buf[1] as usize,
+                                    setting: crate::rpc::DisplaySetting::Brightness(buf[2]),
+                                });
 
                             if let Err(err) = result {
                                 error!("send display setting request to channel failed: {:?}", err);
-                            } else {
-                                info!("send display setting request to channel success");
-                                yield_now().await;
                             }
                         }
                     }
                     Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
+                        yield_now().await;
                         continue;
                     }
                     Err(e) => {