Will not start booting when HDMI is attached to certain powered-off TVs

[TheSHAD0W]

Armbian 24.5.1.  I don't have a serial console setup so I can't tell if it's actually starting to boot or not, but it never gets to the point where a video signal is sent to HDMI.  It *does* send a CEC on signal to the TV, which does turn on, and power-cycling the Pi then begins a normal boot process.  Pi also boots normally headless.  Problem noted on one Insignia model and on a Vizio TV, works as expected on another Insignia model, on a Hisense and on an LG.  Issue began after updating the kernel from legacy.

Edited Thursday at 04:01 PM by TheSHAD0W

[Werner]

You seem to be the first person reporting such an issue and none of us has a second sight. Therefore without logs there is pretty much nothing we can do.

[TheSHAD0W]

https://pastebin.com/2WpTQy3G

last 500 lines of syslog.  I'll try to get a debug console working but it may be a while...  Note that last boot was actually two boot attempts, one with the TV off, and it doesn't look like it sent anything to syslog.

Edited Thursday at 04:41 PM by TheSHAD0W

[TheSHAD0W]

Okay, found another klew to this issue...  Apparently the pi is outputting video at a default 4K spec, and most of the TVs I'm using aren't accepting it, but one is....

 

Multiple lines of:

Quote

begin: Running /scripts/local-block ... done.

 

Then:

Quote

done.

Gave up waiting for root file system device.  Common problems:

 - Boot args (cat /proc/cmdline)

   - Check rootdelay= (did the system wait long enough?)

 - Missing modules (cat /proc/modules; ls /dev)

 ALERT! /dev/nncblk0p1 does not exist.  Dropping to a shell!

 

I would have played with the shell, but the machine is way up on a wall, and I had to transcribe the above from a photo of the screen.  ^^;

 

Edit: And yes, I triple-checked the issue only pops up when the attached TV is turned off.

Edited 21 hours ago by TheSHAD0W