Comment 67 for bug 137234

hi Vincenzo,
based on Comment #35, I also think the problem is from vga polarity.
In the below 4 command group, let us try to find the right polarity pairs.
Could you test the blow command groups one by one when vag pluged after boot.

//command group 1
$xrandr --newmode "1024x768_1" 65.00 1024 1048 1184 1344 768 771
777 806 -hsync -vsync
$xrandr --addmode VGA 1024x768_1
$xrandr --output VGA --mode 1024x768_1

//command group 2
$xrandr --newmode "1024x768_2" 65.00 1024 1048 1184 1344 768 771
777 806 -hsync +vsync
$xrandr --addmode VGA 1024x768_2
$xrandr --output VGA --mode 1024x768_2

//command group 3
$xrandr --newmode "1024x768_3" 65.00 1024 1048 1184 1344 768 771
777 806 +hsync -vsync
$xrandr --addmode VGA 1024x768_3
$xrandr --output VGA --mode 1024x768_3

//command group 4
$xrandr --newmode "1024x768_4" 65.00 1024 1048 1184 1344 768 771
777 806 +hsync +vsync
$xrandr --addmode VGA 1024x768_4
$xrandr --output VGA --mode 1024x768_4

Thanks
Ma Ling