use xrandr --mode, support for primary monitor only

Slax/debian/modules/03-desktop/rootcopy/root/.fluxbox/startup

@@ -84,7 +84,7 @@ rm -f $SIGNAL2 2>/dev/null
 
 # gen screen resolutions to fluxbox menu
 xrandr 2>/dev/null | fgrep x | fgrep . | sort -n | tr -s " " | cut -d " " -f 2 \
-| sed -r "s:(.*):[exec] (\\1) {rm -f $SIGNAL1; xrandr -s \\1; while [ -e $SIGNAL1 ]; do sleep 0.1; done; killall -SIGUSR1 compton}:" > ~/.fluxbox/menu_resolution
+| sed -r "s:(.*):[exec] (\\1) {fbscreensize \\1}:" > ~/.fluxbox/menu_resolution
 
 # In all cases, wait for the sound sleeper.
 # If startup took longer (sound completed already), no extra wait

Slax/debian/modules/03-desktop/rootcopy/usr/bin/fbscreensize

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+SIGNAL=~/.fehbg
+rm -f $SIGNAL
+
+OUTPUT=$(xrandr 2>/dev/null | grep 'connected' | cut -d " " -f 1)
+MODE=$1
+
+xrandr --output $OUTPUT --mode $MODE
+
+while [ -e $SIGNAL ]; do
+   sleep 0.1
+done
+
+killall -SIGUSR1 compton