Re: What do you use for kernel debugging?

> On Sep 28, 2014, at 17:51, "José Pérez Arauzo" <fbl_at_aoek.com> wrote:
> 
> Hi Benjamin,
> 
> On Sun, 28 Sep 2014 15:54:36 -0400 (EDT), Benjamin Kaduk wrote
>> On Sun, 28 Sep 2014, José Pérez Arauzo wrote:
>> 
>>> Hello,
>>> I am trying to track down a (deadlock?) issue in CURRENT via DDB. The
> kernel does
>>> not complete hw probes on my Acer V5.
>>> 
>>> I get stuck on apic_isr looping which leads nowhere.
>>> 
>>> So I thought maybe things improve if I debug from another machine.
>>> 
>>> 
>>> What do you use for kernel debugging? According to the handbook kgdb over
> serial
>>> is a good option, do you agree? I'm on a netbook with no ethernet and no
> option
>>> for firewire: can I have a USB / nullmodem setup to work?
>> 
>> You cannot.
> 
> Oh, what a shame. Why not? Is it because you need hardware probe to
> be over to use it?
> 
> Today I bought a shining USB to USB thingy made by Hama, and guess what?
> It's not supported on FBDS, altought uplcom(4) reports support for
> Hama USB to RS232 brother.

The bootloader doesn't support USB debugging and I'm pretty sure the devices don't support local/remote debugging :(.. I'll do some poking around. I'll talk to some SMEs and see if I can write up a TODO list for a wiki page.

Cheers!