Re: Trying to boot a supermicro H8DMT board

On 15-1-2022 15:28, Eugene Grosbein wrote:
> 15.01.2022 21:06, Willem Jan Withagen wrote:
>> On 14-1-2022 17:41, Eugene Grosbein wrote:
>>> 14.01.2022 23:34, Willem Jan Withagen wrote
>>>
>>>> That is it..... it is "dead" after that
>>>> Does 14-CURRENT have KDB stuff preloaded, I could give it a shot.
>>> I'm not sure, you'll have to try it yourself.
>>>
>>>> Otherwise I'd have to build 11.4 and go into KDB from there.
>>>>
>>>> What are the first things you need to know?
>>> https://docs.freebsd.org/en/books/developers-handbook/book/
>>>
>>> Look at the section "10.6. Debugging Deadlocks" as the problem looks like some deadlock (no panic, no progress).
>>>
>> I have tried all incarnations on that page.
>> Even found https://gist.github.com/bijanebrahimi/f2eb0c620d81aa6234e121a0ddd88cc2
>> which I think has the info more organized.
>>
>> Can it be that the deadlock is too early for the DDB break to be triggered?
> Maybe, can't tell for sure. I'm afraid you'll need to dig it more:
> read the code and add more "prints" to the kernel.

Yeah, looking forward to that.


One question though, running 14-current I can use CTRL-ALT-ESC to get 
into ddb
BUT only after the system has gone into starting 'init()' of the installer.
Before that it is ignored.

Am I overlooking the incantation to trap into a booting kernel?

--WjW