Subject: Re: Using Davicom DM9101 causes system to hang
To: Daniel F. Dickinson <>
From: Manuel Bouyer <>
List: current-users
Date: 05/25/2004 22:08:09
On Fri, May 21, 2004 at 07:58:22PM -0400, Daniel F. Dickinson wrote:
> This is for NetBSD 2.0_BETA (downloaded 2004-05-15)
> I'm using a PC-Chips M599LMR Motherboard with an onboard
> Davicom DM9102 (rh8 agrees with this) with DM9101 PHY (and
> in parentheses dmesg reports AMD AM79C873; I'm not sure
> about rh8) and attempting to transfer certain groups of
> files causes the system to stop responding (no pretty
> keyboard lights changing for caps lock et al, no hard drive
> activity, no network activity, can't switch virtual
> terminals, etc).
> At first I thought it was the amount of traffic or nfs
> since I was trying to do a cp -r of a large subtree on an
> NFS server, however fmirror also hung the system although
> at a different spot, and in another transfer an nfs
> transfer hung the system on a particular file every time,
> but switching to ftp made it work.  Weird.
> There are no log messages when this happens to guide me as
> to what's wrong.  Should I PR this and/or what other
> information would it be helpful for me to send (if I can
> find the file that was always failing would that help, or
> is it likely site-specific?).  I am more than willing to
> help with the debug, but I don't know where to start, never
> having dug into the NetBSD code before, and not even sure
> what debug tools are available.

You can try to enter ddb from text console: ctrl-alt-esc
If you can type 'tr' to get a backtrace, and 'reboot(0x104)' to
attempt a core dump.

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference