I change to cd /boot and change in the config.txt the folling things: config_hdmi_boost=7 but it didn't work hdmi_safe=1 I get a picture but ist was not good. Only: hdmi_force_hotplug=1 work with an HDMI to DVI Cabel. Please use the "sudo vi /boot/config.txt" To Change: #hdmi_force_hotplug=1 to hdmi...