tvservice command is a part of libraspberrypi-bin package which in turn contains various utilities for interacting with the Raspberry Pi’s VideoCore IV. The RPi video output can be configured using the tvservice application (/opt/vc/bin/tvservice). You should plug the HDMI monitor cable into the RPi and use the tvservice application to list the available modes on the connected CEA (typically televisions) or DMT (typically computer monitors) display:
$ tvservice --modes CEA Group CEA has 0 modes: $ tvservice --modes DMT Group DMT has 13 modes: … mode 51: 1600x1200 @ 60Hz 4:3, clock:162MHz progressive mode 58: 1680x1050 @ 60Hz 16:10, clock:146MHz progressive (prefer) mode 82: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive $ tvservice --status state 0x120006 [DVI DMT(82) RGB full 16:9], 1920x1080 @ 60.00Hz, progressive
If you encounter below error, while running the tvservice command:
tvservice: command not found
you may try installing the libraspberrypi-bin package as per below:
$ apt-get install libraspberrypi-bin
tvservice Command Examples
1. Disable HDMI:
$ tvservice -o
2. To disable HDMI at boot, edit /etc/rc.local and add:
/usr/bin/tvservice -o
3. To reenable HDMI from the command line:
$ tvservice -p
4. If you are not using the HDMI output, you can switch it off entirely:
$ tvservice --off Powering off HDMI