Re: NetBSD reboots if hdmi monitor is switched off

[maya%netbsd.org@localhost]

On Sun, Aug 12, 2018 at 03:34:13PM +0530, Mayuresh wrote:
> On NetBSD asusnetbsd 8.0_RC1 NetBSD 8.0_RC1 (GENERIC.201804191727Z) amd64
> 
> If I switch off hdmi monitor by pressing power button on the monitor, I
> find that netbsd reboots.
> 
> There are files saved in /var/crash. I saw the instructions at
> https://wiki.netbsd.org/panic/. But I do not have a debug mode kernel
> (/netbsd.gdb as mentioned on above page).
> 
> I can build one, but in the meantime is there any information I can share
> that will help analyze this?

This works:
# cd /var/crash
# gunzip netbsd.N.* # if the latest is called N
# crash -M netbsd.N.core -N netbsd.N
crash> bt

And type all the output starting from 'crash'.

This is often sufficient to tell what the problem is without a debug
kernel. But more debug is always nicer when you're debugging.

> PS: Sorry, I am still on RC1, in case the problem is fixed in the main
> release. There is some inertia involved in upgrading.

No worries. I doubt it.