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Re: How to get into ddb after system is booted?

On Tue, Jan 31, 2012 at 5:23 PM, Paul Goyette <> 
> On Tue, 31 Jan 2012, Eduardo Horvath wrote:
>> What sort of machine is this and what device is the console?  The cnmagic
>> code only works on the console input device if that device has the cnmagic
>> support hooks.
> It's amd64
>> wskbd.c currently does not support cnmagic.  Someone should probably add
>> that.  OTOH, someone should also change wscons so we don't translate from
>> USB keycodes to whatever we're using internally to what the X server
>> expects.  It's redundant and really complicates things like adding cnmagic
>> support.
> :)
> I infer from your comment that I'm not likely to be succesful with ddb.
> Since I really only need to update a single memory location (to enable some
> additional printf's), can this be done with gdb on the running machine?  Can
> I make gdb write to /dev/mem or /dev/kmem ?

Maybe crash can be used for this.




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