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Sad "Bad address mapping" on Sony N505VE 

Forum: PCMCIA Installation and Configuration Issues
Date: 2000, Jun 18
From: toby cabot toby

I've been using Mandrake 6.1 on a VAIO N505-VE for almost 6 months now and everything worked OK until recently. I've got a Linksys Etherfast 10/100 ethernet card.

Last thursday I started getting strange messages about infinite loops in eth0 interrupts. I used this as an excuse to upgrade to a newer kernel from Mandrake 7.1: kernel 2.2.15 with pcmcia services 3.1.15 as built by Mandrake. This eliminated the problem and things were a-ok for a couple of days.

This afternoon, after a reboot, I started to get "Bad bridge mapping at 0x000000dc" messages when I try to load i82365.o.

I notice in the "known problems" page that this error is caused by some 2.3.x kernels, but I'm not that cutting edge, I'm seeing it with the 2.2 series so I can't revert as a workaround.

Any ideas appreciated; this is the first time in three years of my using Linux that something worked for a while and then stopped working mysteriously. I doubt it's a hardware failure since win98 still works fine on the same machine.


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None A strange problem

Re: Sad "Bad address mapping" on Sony N505VE (toby cabot)
Date: 2000, Jun 19
From: David Hinds <>

I don't understand how something like this could develop all of a
sudden.  Does it matter if you cold boot linux, versus warm booting
from windows?  If the reported bridge mapping address is 0x000000dc,
that would certainly be a problem; the BIOS is supposed to fill this
in, and it is putting it in space used by your system RAM.

The pcmcia_core module has a parameter, cb_mem_base, that lets you
override the bridge address selected by the BIOS.  You could try using
that as a workaround, assuming this isn't just a symptom of something
more serious.  My first guess was "hardware failure" until you said it
still works under Windows.

-- Dave
1. Sad you're not kidding by toby cabot, 2000, Jun 20
(_ None Maybe a very particular hardware fault by David Hinds, 2000, Jun 20
(_ Agree looks like you're right by toby cabot, 2000, Jun 21
"Bad address mapping" on Sony N505VE

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