Tuesday, April 26, 2016

HDMI output issue with Raspberry Pi 3

You need to edit /boot/config.txt file in order to enable HDMI forcefully ie even if no display is connected.

the second entry 'hdmi_drive=2' force HDMI mode rather than DVI, this makes audio works in DMT (computer monitor).

complete file config.txt

The 64 MB partition of the SD-card is mounted as /boot when OS is booted and running.

hdmi_drive=1 Normal DVI mode (No sound)
hdmi_drive=2 Normal HDMI mode (Sound will be sent if supported and enabled)

hdmi_group=1 CEA # TV
hdmi_group=2 DMT # Computer monitor
hdmi_mode=81 1366x768 60 Hz

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