VideoProjector - Revision history

Gunstick at 18:26, 20 October 2014

2014-10-20T18:26:38Z

Gunstick at 22:01, 5 December 2013

2013-12-05T22:01:46Z

Gunstick at 21:43, 5 December 2013

2013-12-05T21:43:59Z

Gunstick: Created page with "Our new 16/9 video beamer has some 16/9 issues as we only use a VGA (loooong) cable. So thet 16/9 laptop connected to the 16/9 projector switches to 4/3 as there seems to be n..."

2013-03-29T19:04:44Z

Created page with "Our new 16/9 video beamer has some 16/9 issues as we only use a VGA (loooong) cable. So thet 16/9 laptop connected to the 16/9 projector switches to 4/3 as there seems to be n..."

New page

Our new 16/9 video beamer has some 16/9 issues as we only use a VGA (loooong) cable.
So thet 16/9 laptop connected to the 16/9 projector switches to 4/3 as there seems to be no DCC signal coming through. That result in a nice 4/3 image on the 16/9 projector... pfuuuh

So here comes the xrandr,as seen on 29C3
Note that not all this will work on your laptop (e.g. the name of the display)

# my laptop is 1366x768, so that what I use
#gtf 1366 768 60 # this gives the parameters for the next line
xrandr --newmode "1368x768_60.00" 85.86 1368 1440 1584 1800 768 769 772 795 -HSync +Vsync
xrandr --addmode VGA1 1368x768_60.00
xrandr --output VGA1 1368x768_60.00
xrandr --output VGA1 --mode 1368x768_60.00
# mirror mode
xrandr --output VGA1 --mode 1368x768_60.00 --same-as LVDS1
xrandr --output LVDS1 --mode 1366x768

← Older revision		Revision as of 18:26, 20 October 2014
Line 36:		Line 36:

	vlc --fullscreen --disable-screensaver --no-video-title-show --mouse-hide-timeout 100 <videofile>		vlc --fullscreen --disable-screensaver --no-video-title-show --mouse-hide-timeout 100 <videofile>
		+
		+
		+
		+	Here is a script where you give the height of the screen and it calculates the resolution for an 21:9 screen
		+
		+	#!/bin/bash
		+	if [ "$1" = "" ]
		+	then
		+	echo "usage: $0 screenheight"
		+	exit
		+	fi
		+	h="$1"
		+	modeline="$(gtf $((2560*h/1080)) $h 60\|awk '/Modeline/{$1="";print}')"
		+	xrandr --newmode $modeline
		+	mode=$(echo $modeline \| cut -d" " -f1)
		+	xrandr --addmode HDMI1 $mode
		+	xrandr --output HDMI1 --mode $mode

@@ Line 20: / Line 20: @@
     xrandr --newmode "1920x1080_60.00"  172.80  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync
     xrandr --addmode VGA1 1920x1080_60.00
     xrandr --output VGA1 --mode 1920x1080_60.00
     xrandr --output VGA1 --right-of LVDS1
-    vlc --fullscreen --disable-screensaver --no-video-title-show --mouse-hide-timeout 100
+Thanks acer to sell a 16:9 fullhd beamer which does not want to output fullhd onto the complete size of the projection. Scumbag beamer thinks: oh this is fullhd on VGA, lets just skew all that to the right and leave 20% black on the left.

@@ Line 1: / Line 1: @@
-Our new 16/9 video beamer has some 16/9 issues as we only use a VGA (loooong) cable.
+Our new 16/9 video beamer (Aacer P7500) has some 16/9 issues as we only use a VGA (loooong) cable.
 So thet 16/9 laptop connected to the 16/9 projector switches to 4/3 as there seems to be no DCC signal coming through. That result in a nice 4/3 image on the 16/9 projector... pfuuuh
@@ Line 6: / Line 6: @@
    # my laptop is 1366x768, so that what I use
    #gtf 1366 768 60    # this gives the parameters for the next line
    xrandr --newmode "1368x768_60.00"  85.86  1368 1440 1584 1800  768 769 772 795  -HSync +Vsync
    xrandr --addmode VGA1 1368x768_60.00
    xrandr --output VGA1 --mode 1368x768_60.00
    # mirror mode
-   xrandr --output VGA1 --mode 1368x768_60.00 --same-as LVDS1
+   xrandr --output VGA1 --same-as LVDS1
    xrandr --output LVDS1 --mode 1366x768