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June 21, 2010
 

Ubuntu Networking Sleep Issue

I just docked my laptop after a meeting upstairs. Unfortunately, it refused to come out of sleep mode so I was forced to reboot it.

On rebooting, KDE's network manager showed by network as "unmanaged" and I was left without any network connectivity - wired or wireless. After some more rebooting and swearing, I figured out the problem:

At hibernate time, Ubuntu tells the network manager that networking is disabled. If the system doesn't wake up or gets rebooted, that setting is not reversed.

I had to manually fix the problem by:

1. Opening /var/lib/NetworkManager/NetworkManager.state in vim
2. Changing "NetworkingEnabled=false" to "NetworkingEnabled=true"
3. Save the file

Voila! On reboot, everything is back to normal.

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May 4, 2010
 

Upgrade to Ubuntu 10.04

I upgraded both the home PC and work laptop to Ubunt 10.04 within the last 24 hours. The home PC is not quite finished yet as I have to muck around with the Nvidia drivers and get the GLX stuff working.

The laptop is 100% done and working fine. Some initial thoughts:

1. Some really nice improvements with the default fonts and rendering. Very smooth and professional.

2. The new version of Thunderbird is nice although the UI switch was quite a shock in some ways. I expect to appreciate it more once I stop looking for the old UI controls.

3. Some weirdness is happening with the keyboard and mouse. I suspect it's because of the USB KVM switch and the fact that I booted up undocked and then connected the docking station during login. Have to reboot and see if that fixes it.

4. My Oracle 11g client installation and TOra software still works! This is one of the first times I haven't had to reinstall/recompile these tools...

Overall, both upgrades went well. No data lost and no horrible surprises. Kudos to the Ubuntu / Kubuntu teams for a nice upgrade path.

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