<![CDATA[Raspberry pi 4 no hdmi output after a while]]>So today after messing around with MMPM and GoogleAssistant, my monitor turned went blank, and the “no connection” appeared, and went to display the next active input.
I use the HDMI input 1 with my Stationary PC and HDMI input with my Pi 4.
Tried to switch back to my Pi, but got the “no connection”.
I have tried switching HDMI inputs, but the hdmi from my Pi still show no connection. HDMI from my pc works fine.
I then tried to connect via VNC, and had no problem. The “Screen configuration” still says 1920x1080 @ 60HZ, so no nothing weird there.
I tried the tvservice -scommand and got this

pi@MagicMirror:~ $ tvservice -s
state 0xa [HDMI CUSTOM RGB lim 16:9], 1920x1080 @ 60.00Hz, progressive

I don’t know what to do with that info, but hopes it helps. I have tried to google a little around, but didn’t find any definitive solution, that didn’t involve something I couldn’t see how it would help.
I have seen some talk about the power supply. But I don’t think I have that issue, as I use an 3 amp power supply from TT Electronics.
This problem also happens, if I use my Pi 4 on my 4k tv.

]]>https://forum.magicmirror.builders/topic/13548/raspberry-pi-4-no-hdmi-output-after-a-whileRSS for NodeSun, 16 Aug 2026 13:17:20 GMTSat, 29 Aug 2020 22:02:03 GMT60<![CDATA[Reply to Raspberry pi 4 no hdmi output after a while on Mon, 31 Aug 2020 22:32:21 GMT]]>try to tunning /boot/config.txt in sudo mode.
you can boost HDMI signal and force it at boot

some command in terminal for RPI:

  • vcgencmd display_power

results:

  1. display_power=0 -> screen off
  2. display_power=1 -> screen on

  • vcgencmd display_power 1
    -> force screen on

  • vcgencmd display_power 0
    -> force screen off

]]>https://forum.magicmirror.builders/post/81008https://forum.magicmirror.builders/post/81008Mon, 31 Aug 2020 22:32:21 GMT<![CDATA[Reply to Raspberry pi 4 no hdmi output after a while on Sat, 29 Aug 2020 22:36:26 GMT]]>@Blauenfeldt have u powered off your pi, and back on.

I suspect you caused the HDMI port to be turned off. tvservice -o or the vgencmd

I know there have been folks reporting that things that worked fine on pi3, won’t power back on on Pi4.

]]>https://forum.magicmirror.builders/post/80920https://forum.magicmirror.builders/post/80920Sat, 29 Aug 2020 22:36:26 GMT