no HDMI output if screen off on boot

2HUbB · February 17, 2019 at 11:09 PM

Hi,

I noticed that the hdmi has no output on my RPI1B if the screen was off during boot.

Can I change that somewhere in the settings?

After that, the only option is to power off and on again ... but this could damage the file system.

Thanks

**Jocke.Sve** · February 18, 2019 at 9:36 AM

Have You tried setting "hdmi_force_hotplug = 1" in config.txt?

If i remember it correctly You probably need to mount /flash as RW.

Read here: Raspberry Pi Config.txt [LibreELEC.wiki]

More details about video settings here:

Video options in config.txt - Raspberry Pi Documentation

2HUbB · February 18, 2019 at 10:26 AM

@Jocke.Sve

Thanks, I will try.

turbotomte · February 19, 2019 at 2:12 PM

Hi,

I had the same problem.

When the screen is off your Raspberry is unable to receive edid information from the screen, resulting in no (or bad) picture.

You need to download the edid info into a file and edit config.txt for the Pi to load the info from the file on startup, instead of trying to get it directly from the screen.

Check this: https://kodi.wiki/view/raspberry_pi_faq#tv_is_not_detected_unless_powered_on_first