Un po' per pigrizia utilizzo lo script newrez (gia' descritto qui) per avere una risoluzione personalizzata su portatili un po' vecchiotti (1024x768 oramai e' un po' troppo riduttiva come risoluzione
Attualmente ho montato una Centos 6 su un ToughBook ed ho scoperto che lo script non funziona.
La cosa e' facilmente risolvibile eseguendo il comando xrandr
Newrez si aspetta di dover gestire LVDS1 e VGA1 mentre su Centos lo schermo del portatile viene chiamato LVDS-0
-------------------------------------------------------------------------
Screen 0: minimum 320 x 200, current 1600 x 1000, maximum 4096 x 4096
LVDS-0 connected 1600x1000+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0*+
800x600 60.3 56.2
640x480 59.9
VGA-0 disconnected (normal left inverted right x axis y axis)
1600x1000 59.9
TV-0 unknown connection (normal left inverted right x axis y axis)
848x480 59.9 +
640x480 59.9 +
1024x768 59.9
800x600 59.9
-----------------------------------------------------------------------------
basta modificare lo script e tutto torna a funzionare (certo che 1600x1000 su uno schermo da 10 pollici e' un po' troppo per gli occhi)
------------------------------------------------------------
#!/bin/bash
# newrez
# Marc Brumlik, Tailored Software Inc, tsi-inc@comcast.net
# up to v 0.8
# use 'xrandr' to scale video output to the display
# v 0.9
# Wed Jan 2 05:23:54 CST 2013
# rewrite to handle mouse boundaries when scaled (mouse confined)
# by setting requested resolution to the unused VGA-0 device
# then scaling that for display on the LVDS-0 device
# v 1.1
# Fri Dec 20 08:28:08 CST 2013
# fixed issue where setting to "default" after some other resulution
# left mouse-area at prior resolution
umask 000
# resolution can optionally be specified on command line
newrez=$1
# we MUST be running xrandr 1.3 or higher
if xrandr -v | grep "RandR version 1.[012]"
then zenity --info --title="XRandR version is too old" --text="You must be running Xrandr
version 1.3 or newer!
Time to upgrade your system :-)"
exit 0
fi
# find the currently connected devices, make a list
devices=`xrandr -q | grep connected | grep -v disconnected | cut -d"(" -f1`
# there MUST be a "connected" LVDS-0 and a "disconnected" VGA-0
current=`xrandr -q`
if echo "$current" | grep "LVDS-0 connected" >/dev/null
then : OK
else zenity --info --title="PROBLEM" --text="Current display must be LVDS-0"; exit 0
fi
if echo "$current" | grep "VGA-0 disconnected" >/dev/null
then : OK
else zenity --info --title="IMPORTANT" --text="The VGA-0 display resolution may be affected by this change"
fi
default=`echo "$current" | grep -A 1 "^LVDS-0" | tail -1 | awk '{print $1}'`
H=`echo $default | cut -d'x' -f1`
V=`echo $default | cut -d'x' -f2`
HZ=`echo $default | awk '{print $2}' | tr -d '[*+]'`
# echo DEFAULT: $default $H $V
if [ -z "$newrez" ]
then while true
do
newrez=`zenity --entry --title="Set New Resolution" \
--text="Default Resolution: $default\n\nNew size (eg 1280x750 or 1450x1000)\n -or- \"default\""` || exit 0
case $newrez in
default|[0-9]*x[0-9]*) break ;;
esac
done
fi
case $newrez in
default) xrandr --output LVDS-0 --mode $default --scale 1x1
xrandr --addmode VGA-0 $default
xrandr --newmode $default $newmode
xrandr --output VGA-0 --mode $default --scale 1x1
exit 0 ;;
esac
newH=`echo $newrez | cut -d'x' -f1`
newV=`echo $newrez | cut -d'x' -f2`
modeline=`cvt $newH $newV $HZ | grep Modeline`
newmode=`echo "$modeline" | sed 's/^.*"//'`
cvtrez=`echo "$modeline" | sed -e 's/_.*//' -e 's/^.*"//'`
if [ "$newrez" != "$cvtrez" ]
then newrez=$cvtrez
newH=`echo $newrez | cut -d'x' -f1`
newV=`echo $newrez | cut -d'x' -f2`
fi
scaleH=`echo -e "scale=10\n$newH / $H\nquit" | bc`
scaleV=`echo -e "scale=10\n$newV / $V\nquit" | bc`
if echo "$current" | grep -A 100 "^VGA-0" | grep $newrez >/dev/null
then : already there
else xrandr --newmode "$newrez" $newmode
xrandr --addmode VGA-0 $newrez
fi
if xrandr --output VGA-0 --mode $newrez --output LVDS-0 --fb $newrez --scale $scaleH"x"$scaleV 2>&1 | tee -a /tmp/xrandr.err
then : success
else zenity --info --title="Xrandr produced this error" --text="`cat /tmp/xrandr.err`"
The problem could be that Your video driver
does not support xrandr version 1.3
rm -f /tmp/xrandr.err
fi
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