Public bug reported:
Binary package hint: network-manager
On my laptop, I am unable to use the ethernet port to connect to a wired
network. I noticed this problem on the Gutsy LiveCD and now on Gutsy
after installation.
Using nm-tool, it seems like NetworkManager does see my ethernet card as
eth0. It reports its driver as e1000 and everything else OK.
However, nothing happens after connecting ethernet cable. I checked
output of /var/log/daemon.log as well as other log files, but did not
find any activity.
Going into the nm-applet, the "Wired Network" option is greyed out.
I also tried the following:
- I went to nm-applet -> Manual configuration
- I disabled roaming mode for the Wired connection
- I set Configuration to DHCP and pressed OK
- Note that the checkbox next to Wired connection is now unchecked
- At this point, NetworkManager logged some output, see daemon_log_1
- I then clicked the checkbox next to Wired connection to activate it
- Now, NetworkManager logged some more output, see daemon_log_2
What is interesting about the daemon.log output is that it keeps
referring to eth1, which is the wireless card.
I tried something else, which is to uncheck the Wired connection in
NetworkManager and to go to the command line. I checked
/etc/network/interfaces contained the following: "iface eth0 inet dhcp".
I also unloaded my wireless card's driver by doing "modprobe -r
ipw3945".
I then tried to do an "ifup eth0" but from the log output it seems like
DHCPD could not find an IP address.
I have already eliminated problems with the cable or router, by testing
on another Linux laptop where I could connect to the internet OK. It got
DHCP and everything.
Another theory is maybe its something to do with IRQ's. I noticed when I
ran "modprobe -r e1000", I got the following message in the syslog:
"ACPI: Unable to derive IRQ for device 0000:00:19.0"
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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Unable to connect to wired network
https://bugs.launchpad.net/bugs/180440
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