RPi4 freeze when AVR switched or HDMI disconnected

Stretch · December 13, 2019 at 2:49 AM

I have been trying to configure my RPi4 (LibreELEC 9.2.0, KODI 18.5), to be alway on.

Whenever the AVR/Amplifier is switched off or the HDMI cable is disconnected the RPi4 freezes. The network interface still shows polling but I can not SSH into the Rpi until it is power cycled.

As expected, switching on the AVR again shows "No Signal" from the Rpi.

Other OS installs (DietPi; Raspbian Buster + KODI) remain ON and do not freeze.

I searched forums for a couple of weeks looking for a solution.

I have tried modifying config.txt

Code

hdmi_force_hotplug=1
hdmi_drive=2

I have tried disabling CEC in KODI settings.

None of these changes have been sucessful. (perhaps an EDID emulator would work but it's an expensive solution)

**Iridium** · December 18, 2019 at 5:03 PM Official Post

Please provide a full debug log.

How to post a log (wiki)

1. Enable debugging in Settings>System Settings>Logging
2. Restart Kodi
3. Replicate the problem
4. Generate a log URL (do not post/upload logs to the forum)

use "Settings > LibreELEC > System > Paste system logs" or run "pastekodi" over SSH, then post the URL link

Stretch · December 21, 2019 at 6:02 AM

I enabled debugging , (Not sure if I need to enable verbose component specific logging)

When the amp and TV are switched off there is a delay before losing the SSH connection.

I tried waiting 3-4 seconds after switch-off before executing dmesg | paste to see if I could capture any extra info but all log results are only from the last restart.

http://ix.io/24z5

Still learning.... any help appreciated