Oops, we actually fixed this recently; the installer should now be commenting out these entries at the end of the install.
It would be helpful if you could take a recent LiveCD build and test this again. The 12.04 beta 1 images won't be recent enough; you can get the latest daily images here: http://cdimage.ubuntu.com/daily/current/ Should this fail to work it seems to me as though today's image is actually good. For today it will be referenced by that /current/ link; but otherwise you might be able to reach it until the day after tomorrow at: http://cdimage.ubuntu.com/daily/20120312/ The easiest trick to see if an image has a chance of being installable is to look at the report.html file on the links above. If it contains no reported issues, then the image is likely fine. ** Changed in: network-manager (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/862614 Title: Using wireless network during install causes hilarity and confusion later Status in “network-manager” package in Ubuntu: Incomplete Bug description: The installer (I used the alternate installer) wanted a network connection for use "during the install". My cheap ethernet cable had failed, so lazily I used wireless. Install went fine, but: - on every bootup, the system waited for two minutes for a network connection, even though I had by then plugged in a reliable ethernet connection - in network manager, the wireless showed up as unmanaged and could not be configured I see somebody else reported the same thing (see bug 280417 comment #16 by Skaggs) some time ago, so this is not a regression. Commenting out the wireless adaptor in /etc/network/interfaces and rebooting solved the problem. So, there are two or three problems here: 1) the installer should warn you that the network adaptor you choose during the install is placed into /etc/network/interfaces and may need to be removed from there for proper system operation 2) the system doesn't actually manage to reestablish a network connection on that wireless adaptor when it's started that way, though it does fine later once you remove it from that file and manage it with network manager 3) network manager might want to provide some mouseover help explaining how to switch a device from unmanaged to managed. I'm filing it under network manager since that's where I first ran into it, and that's where I first saw the workaround documented. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/862614/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

