[Bug 601159] [NEW] e1000 ethernet port intermitently works

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I am having trouble with my e1000 integrated ethernet port.  The problem
is intermittent, happens under Lucid, and not under Windows.  The same
problem happens on all three identical computers which are Dell Inspiron
530s towers.

The interface never acquires an ipaddress.  I have tried 2 different
switches, from two different manfacturers, af both work under Windows
and not under Lucid.

ethtool says that the card is MDI-X instead of MDI.  Typing "ethtool -s
eth0 autoneg off" fixes the problem until next reboot.  I do need to
restart "networking" and "network-manager" to get a ip afterwords
though.

I put this in /etc/rc.local as a workaround, but I'd really like a better solution:
ethtool -s eth0 autoneg off
service network-manager restart && true
service networking restart && true
sleep 3

Would looking at anything in a packet sniffer help at all?  Also, Linux
machines that are NOT Inspiron 530s work just fine.

Ubuntu version:
Description:	Ubuntu 10.04 LTS
Release:	10.04

ethtool dump when working with workaround:
Settings for eth0:
 Supported ports: [ TP ]
 Supported link modes:   10baseT/Half 10baseT/Full
                         100baseT/Half 100baseT/Full
 Supports auto-negotiation: Yes
 Advertised link modes:  Not reported
 Advertised pause frame use: No
 Advertised auto-negotiation: No
 Link partner advertised link modes:  Not reported
 Link partner advertised pause frame use: No
 Link partner advertised auto-negotiation: No
 Speed: 100Mb/s
 Duplex: Full
 Port: Twisted Pair
 PHYAD: 1
 Transceiver: internal
 Auto-negotiation: off
 MDI-X: off
 Supports Wake-on: pumbag
 Wake-on: g
 Current message level: 0x00000001 (1)
 Link detected: yes

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: e1000
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e1000 ethernet port intermitently works
https://bugs.edge.launchpad.net/bugs/601159
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