RPi Easy SD Card Setup - eLinux.org

Which values are valid for my monitor?
Your HDMI monitor may support only a limited set of formats. To find out which formats
are supported, use the following method.
▪ Set the output format to VGA 60Hz (hdmi_group=1 hdmi_mode=1) and boot up the
Raspberry Pi
▪ Enter the following command to give a list of CEA supported modes
/opt/vc/bin/tvservice -m CEA
▪ Enter the following command to give a list of DMT supported modes
/opt/vc/bin/tvservice -m DMT
▪ Enter the following command to show your current state
/opt/vc/bin/tvservice -s
▪ Enter the following commands to dump more detailed information from your monitor
/opt/vc/bin/tvservice -d edid.dat
/opt/vc/bin/edidparser edid.dat
The edid.dat should also be provided when troubleshooting problems with the default
HDMI mode
Licensed Codecs
Hardware decoding of additional codecs can be enabled by purchasing a license that is
locked to the CPU serial number of your Raspberry Pi.
decode_MPG2 License key to allow hardware MPEG-2 decoding.
decode_MPG2=0x12345678
decode_WVC1 License key to allow hardware VC-1 decoding.
decode_WVC1=0x12345678
License setup for SD-card sharing between multiple Pis. Maximum of 8 licenses at once.