diff --git a/start.sh b/start.sh
index c55251a..8e7df30 100644
--- a/start.sh
+++ b/start.sh
@@ -23,17 +23,17 @@ cd /home/unitree/robot_face_rec || {
   echo "Env before display detection: DISPLAY=$DISPLAY, XAUTHORITY=$XAUTHORITY"
 } >> "$LOG_FILE"
 
-# --- 动态检测 DISPLAY 的逻辑 ---
-# 方法：尝试从正在运行的 Xorg / X 进程环境中读取 DISPLAY
-
-display_found=""
+# --- DISPLAY 设置逻辑 ---
+# 使用默认DISPLAY值:0，这是Linux系统中最常见的显示编号
+display_found=":0"
+echo "Using default DISPLAY: :0"
 
 for pid in $(pgrep Xorg); do
   if [ -r /proc/$pid/environ ]; then
     disp=$(tr '\0' '\n' < /proc/$pid/environ | grep '^DISPLAY=' | cut -d'=' -f2-)
     if [ -n "$disp" ]; then
       display_found="$disp"
-      echo "Chosen from Xorg process: $disp"
+      echo "Chosen DISPLAY from Xorg process: $disp"
       break
     fi
   fi
@@ -43,20 +43,38 @@ done
 if [ -z "$display_found" ]; then
   # 常见默认：:0
   display_found=":0"
-  echo "Chosen default"
+  echo "Chosen default DISPLAY: :0"
 fi
 
 export DISPLAY="$display_found"
 
+# 从Xorg命令行参数中获取正确的XAUTHORITY路径
+xauth_path=""
+for pid in $(pgrep Xorg); do
+  if [ -r /proc/$pid/cmdline ]; then
+    cmdline=$(tr '\0' ' ' < /proc/$pid/cmdline)
+    xauth_path=$(echo "$cmdline" | grep -o "-auth [^ ]*" | cut -d' ' -f2)
+    if [ -n "$xauth_path" ]; then
+      break
+    fi
+  fi
+done
+
+# 如果没有找到，使用默认路径
+if [ -z "$xauth_path" ]; then
+  xauth_path="/home/unitree/.Xauthority"
+  # 尝试更常见的gdm路径
+  if [ -f "/run/user/1000/gdm/Xauthority" ]; then
+    xauth_path="/run/user/1000/gdm/Xauthority"
+  fi
+fi
+
+export XAUTHORITY="$xauth_path"
+
 {
   echo "Chosen DISPLAY = $DISPLAY"
-} >> "$LOG_FILE"
-
-# XAUTHORITY：假设用户的 .Xauthority 存在于 home 目录
-export XAUTHORITY="/home/unitree/.Xauthority"
-{
   echo "Using XAUTHORITY = $XAUTHORITY"
 } >> "$LOG_FILE"
 
 # 最终执行 Python 程序（不后台化，用 exec 替换进程）
-exec python face_rec.py >> "$LOG_FILE" 2>&1
+exec python face_rec.py >> "$LOG_FILE" 2>&1
\ No newline at end of file