[ubuntu] Ubuntu 15 - boot - cannot display this video mode

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http://ubuntuforums.org – I downloaded the latest Ubuntu build. Burned the ISO to CD and ran a demo from the CD without issue. I then installed Ubuntu accepting all the automatic updates, mp3 player, etc. On first boot on Dell flat panel display I receive - auto detect (Analog Input) cannot display this video mode optimum resolution 1440x 900 60Hz. My PC - HP Pavilion Media Center m8100n TV PC - The 15 pin video connector is on the system board - I do not have a separate video card. I assume Ubuntu is having trouble talking to the flat panel display. I tried a old Dell Trinitron monitor but received - out of scan r (Hardware)