Originally Posted by
dpm41
I had a similar problem with a D-link DFE-550TX NIC. Network Manager reported a "Device not Ready" regardless if a ran the Live CD or installed the alternate version of Ubuntu 12.04 (Regular CD install crashed with the error: "The installer encountered an unrecoverable error"). IFCONFIG showed network device with no apparent IPV4 addresses and LSPCI showed my NIC using the Sundance driver.
What worked for me was to either disable or uninstall the Network Manager and configure my network setting in the /etc/network/interfaces file. Uninstalling Network Manager did the trick, but it also caused system error messages to pop up every once in a while. The second time I tried just disabling it and haven't had a problem yet.
There are other posts that step through disabling Network Manager and setting up network devices in the interfaces file. If you want me to step through what worked for me, Let me know ...
I've got some good and bad news here.
I finally installed 12.04 again and the 'device not ready' remained unchanged.
Once I typed the following command, NetworkManager was able to actually identify all three NIC:
Code:
sudo killall -9 NetworkManager
I'm not too sure what have been causing this problem, but from what I could see is that the Network Manager MAY have been loaded before the kernel identifies the NIC!
I'm not an expert, but it looks like killing the application AFTER booting the OS has fixed the issue.
Anybody care to clarify why this is happening? Is there a permanent solution given that the NIC work fine with 11.10?
Thanks
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