I have a Wandboard Quad Rev. C1 with Ubuntu 12.04 installed. Ubuntu image from Wandboard.org boots normally, but the screen resolution is always 1920x1080

I can't change it on Display settings, because that is the only option.
I use a HDMI to DVI-D cable. The monitor has DVI-D input.
I need the right resolution for my monitor which is 1024x768.
I tried the following after boot:
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cat /proc/cmdline
Returns:
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console=ttymxc0,115200 root=/dev/mmcblk0p1 rootwait rw
then i did:
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cat /sys/class/graphics/fb0/mode
Returns:
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U:1920x1080p-60
Im using a HDMI to DVI cable. The monitor has DVI-D input. Provided by Hope Industrial Systems.
jury093 advised me the abore procedure. Thanks jury!
Any help is appreciated.