Probably a bug in the driver. The syslog also contains oops output that seems to be related to the atl1c driver.
@Adi: Any improvement in Ubuntu 12.04? ** Summary changed: - Wired network link not detected + NM does not detect carrier on wired interface; ethtool does -- Atheros AR8152 atl1c ** Changed in: network-manager (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/882929 Title: NM does not detect carrier on wired interface; ethtool does -- Atheros AR8152 atl1c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/882929/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs