remote debug over usb vs. old serial cable?
avg at icyb.net.ua
Thu Mar 26 07:22:46 PDT 2009
on 26/03/2009 15:06 Erik Trulsson said the following:
> On Thu, Mar 26, 2009 at 01:56:13PM +0100, Ronald Klop wrote:
>> In the past I could catch a panic during boot via a serial cable connected
>> to another computer.
>> My new computer only has USB-ports and ethernet. What kind of cable do I
>> need now to do remote debugging?
>> The old computer also has usb, so I think the connection should be in that
>> They all run 7-STABLE.
> USB won't work for that purpose. It requires far too much kernel support to
> be useful after a panic.
in fact, there is a special USB (EHCI) mode for such purposes:
But that requires some special HW in addition to SW support which our doesn't have.
BTW, Ronald, it is possible that you might have a serial header on motherboard
which is not connected to any traditional port.
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