diff --git a/package/qt/qt5/files/qt-env.sh b/package/qt/qt5/files/qt-env.sh
index f41c6c763..28f7c19be 100755
--- a/package/qt/qt5/files/qt-env.sh
+++ b/package/qt/qt5/files/qt-env.sh
@@ -1,10 +1,11 @@
 #!/bin/sh
 
-export QT_QPA_PLATFORM=eglfs:size=896x480
+export QT_QPA_PLATFORM=eglfs:size=480x864
 export QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/qt5/plugins
 export QT_QPA_FONTDIR=/usr/lib/fonts
 export QT_QPA_GENERIC_PLUGINS=tslib
 export QT_QPA_EGLFS_INTEGRATION=none
+#export QT_QPA_EGLFS_ROTATION=90
 export XDG_RUNTIME_DIR=/dev/shm
 #export QT_QPA_GENERIC_PLUGINS=evdevmouse:/dev/input/event1
 export QT_QPA_GENERIC_PLUGINS=evdevkeyboard:/dev/input/event0
diff --git a/target/allwinner/mandolin-c1evb/configs/sys_config.fex b/target/allwinner/mandolin-c1evb/configs/sys_config.fex
index fd76d8d74..b7e0bb84c 100755
--- a/target/allwinner/mandolin-c1evb/configs/sys_config.fex
+++ b/target/allwinner/mandolin-c1evb/configs/sys_config.fex
@@ -498,11 +498,11 @@ screen0_output_mode      = 2
 screen0_output_format    = 0
 
 screen1_output_type      = 1
-screen1_output_mode      = 4
+screen1_output_mode      = 8
 
 fb0_format               = 0
 fb0_width                = 480
-fb0_height               = 896
+fb0_height               = 864
 
 fb1_format               = 0
 fb1_width                = 0