Date: Tue, 22 Jul 2014 21:40:49 -0400 (EDT) From: Benjamin Kaduk <bjk@freebsd.org> To: Nidal Khalil <nedmath@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: freebsd-hackers Digest, Vol 588, Issue 1 Message-ID: <alpine.GSO.1.10.1407222136380.21571@multics.mit.edu> In-Reply-To: <CADoY-6i5jytJswq9Ck3cir0YOLt62CKPdmMz=nSDCNQre6tGbg@mail.gmail.com> References: <mailman.7.1406030400.87390.freebsd-hackers@freebsd.org> <CADoY-6jDa-nD9w6jLUuUttjNgEbV0eJAu2Hm9AvFvAWm6Y9ASg@mail.gmail.com> <CADoY-6i5jytJswq9Ck3cir0YOLt62CKPdmMz=nSDCNQre6tGbg@mail.gmail.com>
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On Tue, 22 Jul 2014, Nidal Khalil wrote: > Hello All, > OK, I was able to capture the early boot output by entering ddb > GDB: no debug ports present > KDB: debugger backend; ddb > > My pc does not have a serial port. However I am using usb to serial by > Prolific Tech. > You mean to tell me that the kernel gdb shim is hardwired to /dev/cuau0? It is not hardwired to that exact device node, but yes, a USB-to-serial adapter will not work for it. A firewire port is also supposed to be usable for remote kernel debugging, as documented at http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-dcons.html -Ben
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