diff --git a/debian/control b/debian/control
index e47417f6..fdebab42 100644
--- a/debian/control
+++ b/debian/control
@@ -12,7 +12,8 @@ Build-Depends: debhelper-compat (= 12),
                qtbase5-dev-tools,
                libqt5x11extras5-dev,
                libgsettings-qt-dev,
-               libkf5windowsystem-dev
+               libkf5windowsystem-dev,
+               libx11-dev,
 Standards-Version: 4.5.0
 Rules-Requires-Root: no
 Homepage: https://github.com/ukui/kylin-nm
diff --git a/kylin-nm.pro b/kylin-nm.pro
index a54c8455..f97d0a5d 100644
--- a/kylin-nm.pro
+++ b/kylin-nm.pro
@@ -18,7 +18,7 @@ CONFIG += release
 
 # CONFIG += link_pkgconfig
 # PKGCONFIG += gsettings-qt
-LIBS    +=  -L/usr/lib/ -lgsettings-qt
+LIBS    +=  -L/usr/lib/ -lgsettings-qt -lX11
 
 target.path = /usr/bin
 target.source += $$TARGET
diff --git a/src/main.cpp b/src/main.cpp
index d6195efd..e4706115 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -26,6 +26,7 @@
 #include <QApplication>
 #include <QDebug>
 #include <QDesktopWidget>
+#include <X11/Xlib.h>
 
 #define LOG_IDENT "ukui_kylin_nm"
 
@@ -33,15 +34,22 @@
 int main(int argc, char *argv[])
 {
     //QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+    Display *disp = XOpenDisplay(NULL);
+    Screen *scrn = DefaultScreenOfDisplay(disp);
+    if (NULL == scrn) {
+        return 0;
+    }
+    int width = scrn->width;
+
+    if (width > 2560) {
+        #if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
+                QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+                QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+        #endif
+    }
 
     QApplication a(argc, argv);
 
-    if (QApplication::desktop()->width() >= 2560) {
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
-        QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
-        QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
-#endif
-    }
 
     openlog(LOG_IDENT, LOG_NDELAY | LOG_NOWAIT | LOG_PID, LOG_USER);