seems to solve issues related to HDMI in some cases.
Can't change Resolution
If you have had to use
to make your pi display on your display, you will only be able to get 640x480 resolution. To fix this you need to use these settings to allow different resolutions.
and then set
to force a resolution (those settings are for 1080p 60hz). More options can be found at: http://elinux.org/RPiconfig#Video_mode_options
An example of a forced 4:3 ratio at 1024x768
hdmi_drive=2 hdmi_force_hotplug=1 hdmi_group=2 hdmi_mode=16