Thread: Weird split screen effect on arcade monitor

i've been using ubuntu while on laptop thought i'd run on arcade machine. monitor can handle resolution @ least 704x513 60hz (the resolution original arcade game used) , uses composite sync. i've spent time using xrandr resolution, refresh rate , sync polarities need.

these commands used set resolution.

gtf 640 480 60
xrandr --newmode "640x480_60" 23.86 640 656 720 800 480 481 484 497 -hsync -vsync
xrandr --addmode vga-1 "640x480_60"
xrandr --output vga-1 --mode 640x480_60

tried

gtf 640 480 60
xrandr --newmode "640x480_60" 23.86 640 656 720 800 480 481 484 497 -csync
xrandr --addmode vga-1 "640x480_60"
xrandr --output vga-1 --mode 640x480_60

has same effect since have hsync , vsync wired composite sync anyway.

weird split screen effect that's in picture. looks i'm missing cant figure out! in advance!

- i've seen similar posts referring computer monitors , end saying edit /etc/x11/xorg.conf file (which don't have reason ) or update video drivers doesn't since i'm not dealing normal computer monitor resolutions here

attached images

• img_20100829_053029.jpg (77.1 kb, 12 views)

i'm running ubuntu 10.04, , graphics card nvidia geforce 7300 se. i've tried thing work , without nvidia drivers installed. hope info helps

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