Detect best resolution, Fix #31

refreshVP.sh

@@ -24,6 +24,14 @@ then
 	export XAUTHORITY="/home/$user/.Xauthority"
 fi
 
+# show max between two res
+max_res(){
+    [ -z "$2" ] && echo $1 && return
+    first=$(echo $1 | sed 's/x/*/' | bc)
+    second=$(echo $2 | sed 's/x/*/' | bc)
+    [ $first -ge $second ] && echo $1 || echo $2
+}
+
 # Default main screens (external VGA or internal screen)
 MAIN_SCREENS="DP-3 VGA-1 LVDS-1 eDP1"
 
@@ -49,43 +57,51 @@ screens=$(xrandr | grep " connected" | cut -f 1 -d ' ' \
 # Auto detect best resolution
 for m in $(xrandr | awk -v pattern="^$MAIN_SCREEN" '/^.* connected/{IN=0} $0 ~ pattern {IN=1} /^ /{if(IN==1){print $1}}')
 do
-	# echo "testing mode $m"
-	for line in $(xrandr | awk -v pattern="^$MAIN_SCREEN" '/^.* connected/{IN=1} $0 ~ pattern {IN=0} {if(IN==1){print $1}}')
-	do
-		# echo "line $line"
-		if [[ $line =~ [0-9]* ]]
-		then
-			# New mode
-			if [ "$line" == "$m" ]
-			then
-				found=1
-			fi
-		else
-			# New screen
-			if [ $found == 0 ]
-			then
-				break
-			fi
-			found=0
-		fi
-		# echo "Found ? $found"
-	done
-	if [ $found == 1 ]
-	then
-		mode="--mode $m"
-		break
-	fi
+    # echo "testing mode $m"
+    OTHERS=$(xrandr | awk -v pattern="^$MAIN_SCREEN" '/^.* connected/{IN=1} $0 ~ pattern {IN=0} {if(IN==1){print $1}}')
+    if [ -z "$OTHERS" ]
+    then
+        # one screen look for best common resolution
+        mode=$(max_res $m $mode)
+    else
+        # Several screen look for best common resolution
+        for line in $OTHERS
+        do
+            # echo "line $line"
+            if [[ $line =~ [0-9]* ]]
+            then
+                # New mode
+                if [ "$line" == "$m" ]
+                then
+                    found=1
+                fi
+            else
+                # New screen
+                if [ "$found" == 0 ]
+                then
+                    break
+                fi
+                found=0
+            fi
+            # echo "Found ? $found"
+        done
+        if [ "$found" == 1 ]
+        then
+            mode="$m"
+            break
+        fi
+    fi
 done
 # echo "mode $mode"
 
 # Primary screen
-cmd="xrandr --output $MAIN_SCREEN --auto $mode --rotate normal --primary"
+cmd="xrandr --output $MAIN_SCREEN --auto --mode $mode --rotate normal --primary"
 
 # Add all connected as copy
 prev_s=$MAIN_SCREEN
 for s in $(echo -e $screens)
 do
-    cmd="$cmd --output $s --auto $mode --same-as $prev_s --rotate normal"
+    cmd="$cmd --output $s --auto --mode $mode --same-as $prev_s --rotate normal"
     prev_s="$s"
 done