diff --git a/skel/disp b/skel/disp
index b39bf1e..d01d0b6 100644
--- a/skel/disp
+++ b/skel/disp
@@ -26,6 +26,17 @@ _allon() {
     exit
 }
 
+_cloneprimary() {
+    if [ -z "$PRIMARYRESOLUTION" ]; then
+      echo "Could not detect resolution"
+      exit
+    fi
+    _list_connected | while read display; do
+        _xrandr --output $display --mode "$PRIMARYRESOLUTION"
+    done
+    exit
+}
+
 _display_main() {
     [[ -f "$CONFIG" ]] || {
         echo "ERROR: You do not have configuration yet"
@@ -145,23 +156,22 @@ _arandr_empty() {
 _help() {
     echo 'DISPtool
 
-    Running without arguments shows display configuration choices
+   Running without arguments shows display configuration choices
+   help    Get this help message
+   setup   Setup display names
+   all     Try to turn all displays on
+   primary Clone primary display resolution to all other displays
+   Display configurations:
 
-    help    Get this help message
-    setup   Setup display names
-    all     Try to turn all displays on
+   0       Run "arandr" to setup manually
+   1       Main display only
+   2       Presentation: Main and external screen clones
+   3       Workstation: Run your workstation mode, setup in the configuration file
 
-    Display configurations:
+   Second argument to any previous sets the gamma correction value
+   Configuration file: '$CONFIG'
 
-    0       Run "arandr" to setup manually
-    1       Main display only
-    2       Presentation: Main and external screen clones
-    3       Workstation: Run your workstation mode, setup in the configuration file
-
-    Second argument to any previous sets the gamma correction value
-    Configuration file: '$CONFIG'
-
-    Display settings saved with arandr are displayed last
+   Display settings saved with arandr are displayed last
     '
     _list_arandr
     exit
@@ -178,6 +188,8 @@ _help() {
 g=1
 [[ -z "$2" ]] || g=$2
 i=$1
+PRIMARYRESOLUTION=$( xrandr | grep -w primary | grep -o '[0-9]\+x[0-9]\++[0-9]\++[0-9]\+' | grep -o '[0-9]\+x[0-9]\+' )
+
 if [ -z "$1" ]; then
    echo "Currently connected displays:"
    xrandr | grep --color=always -e ".* connected" -e '.*\*' | awk '{ print $1,$2,$3} '
@@ -189,6 +201,7 @@ if [ -z "$1" ]; then
    2       Presentation: Main and all external screen clones (1024x768)
    3       Workstation: Your personal configration ('$WORKSTATIONLEFT + $WORKSTATIONRIGHT', panel on '$PANEL')
    a       All displays on
+   p       All displays on, with the resolution of primary display ('$PRIMARYRESOLUTION')
    s       Create and edit configuration '$CONFIGURED'
 
    Settings by arandr:'
@@ -199,6 +212,7 @@ fi
 
 case $i in
     "a"*)    _allon; ;;
+    "p"*)    _cloneprimary; ;;
     "s"*)    _setup; ;;
     0)      ( arandr & ); ;;
     1)      _display_main; ;;