Tinkerboard shuts down on kernel panic instead of rebooting

[tinker]

Hello,

 

I have set

kernel.panic=180

in /etc/sysctl.conf to reboot on a kernel panic. 

 

Before, the system would keep running/hanging and I could read the errors if I turned on a attached display.  Now the result is that the tinkerboard switches off.  My expected result would be a reboot.

 

Do I have to set something else?  Or do I need to use watchdog? 

 

I am using the original tinkerboard with debian bullseye, kernel 5.15.48-rockchip.  

Edited August 25, 2022 by tinker

[jock]

If you run echo b > /proc/sysrq-trigger from root does the board reboot or turns off?

[tinker]

vor 1 Stunde schrieb jock:

If you run echo b > /proc/sysrq-trigger from root does the board reboot or turns off?

It reboots instantly.

 

(If it matters, I installed the watchdog package in the meantime, but did not configure it yet, I can uninstall it, if it matters for testing)