Wired connection does not work on Hardy when Wireless connection available

[John Rose]

Wired ethernet connection does not work on Hardy when Wireless connection available. This is on Dell Inspiron with working Broadcom card. Wired option is not shown when Network Manager applet invoked. Whem Manual Configuration selected, Wired is shown with previously working parameters for Static connection.

[John Rose (johnaaronrose)]

Mysteriously neither the wired nor the wireless connections now work! My /etc/network/netfaces only has entry for lo. I've tried amending it for a static eth0 but no good. The network manager applet shows connection wirelessly with the appropriate addresses set correctly (i.e. for ip, route, broadcast, DNS).

[glass.dimly (jmjohn)]

I have this problem in Intrepid. It started with Intrepid and did not occur in Hardy.

When ethernet is connected and wireless is also connected, it is not possible to use either device. The internet is inaccessible. I have an Dell XPS M1330 with Intel 3945 wireless card.

Workaround: disable wireless when ethernet is connected.

[Alexander Sack (asac)]

I think this is hardy? If you have entries in /etc/network/interfaces it means that NM doesnt manage them. Setting all your interfaces to "Roaming" will make NM take control again. Removing everythign except "iface lo .." entries from /etc/network/interfaces will have the same effect as "Roaming mode".

[glass.dimly (jmjohn)]

This bug is still present in Intrepid with all the latest upgrades.

My /etc/network/interfaces file follows:

auto lo
iface lo inet loopback

The information given did not change the status of the bug, therefore I am re-opening it.

[glass.dimly (jmjohn)]

This bug has been reported by two people and is still present.

[John Rose (johnaaronrose)]

I'm now using Lucid (fully up to date) after clean install. Initially I connected to router using wired eth0. Worked fine. Now I sometimes connect to another router using wireless connection (both routers are at home). That works OK. However, Network Manager applet shows both the wired & wireless connections are active. This doesn't seem right. Firefox works OK, but I have problems printing on a printer connected to another Ubuntu PC wired to the router which has the wireless connection. I'm not sure if this should be recorded against this bug or another bug opened (but for which package?)? Please advise.

[Thomas Hood (jdthood)]

NM does configure both interfaces. That's fine.

If you can't print then there is a problem without the routing table. You should add the needed routing information under Edit Connections.