Sunday, October 30, 2011

Ubuntu Linux 11.10 Install Notes

This past week, I finally got around to installing the latest version of Ubuntu Linux on my home server - 11.10, "Oneiric Ocelot" (released 2011-10-13). There shouldn't be anything too significant here - these are mainly notes for myself, but posted here in case something is useful to others. I always do a full, clean re-installation - so several of the notes listed here won't be of concern for an in-place upgrade.

For some additional reference, this is the same server that I have setup as part of my Ubuntu Linux Router project, is setup with LDAP, and is the subject of several other Linux-related posts.

As I am using and now dependent on VLANs on this server for my network setup, I need to have a few necessary related packages readily available for the upgraded OS before reinstalling. These are not currently included on either the CD or DVD installation images, and I need them to be able to regain Internet connectivity - so simply using "apt-get" to re-install them from the Internet is clearly not an option. For the 11.10 upgrade, I downloaded the following amd64 *.deb packages:

After the fresh installation, the server fails to boot. This isn't anything new to to 11.10, but has been something to remember since I converted to a GUID Partition Table (GPT) from the legacy MBR partitioning scheme. I already have the special BIOS boot partition, as detailed under "GPT" at, which doesn't need to be re-configured with an OS upgrade. However, after the Ubuntu installation finishes, I do need to reset this partition as "active" in the legacy MBR partition table using fdisk - as I apparently have one of the Intel motherboards with a "buggy BIOS" that otherwise shouldn't require this. Additional details are at and

All of my posts for the Ubuntu Linux Router project, while written for 8.04, are still almost completely valid and applicable for all releases since - including 11.10. One edit for Configuring Persistent PPP is that instead of attempting to disable NetworkManager, it is easier to just remove it: "apt-get remove network-manager". Install the networking *.deb packages downloaded above, then configure the DSL. Uncomment the "usepeerdns" line from the /etc/ppp/peers/dsl-provider restored from backup until BIND can be setup.

Once online, download and install some additional packages:

apt-get install vim build-essential ssh gnome-panel nautilus-open-terminal dkms linux-server
apt-get upgrade

After getting LDAP re-configured, 11.10 has some problems with graphical / xorg logins, as detailed at, and somewhat, "Problems with LightDm on Ubuntu 11.10 Oneiric? Here's how to solve" (2011-10-16, Unfortunately, in this case, both LightDm and gdm exhibit the same issue - so my current work-around is to disable the problem script, /etc/X11/Xsession.d/90qt-a11y, by prefixing its name with a non-numeric character.

Finally, I don't need the extra help that Ubuntu provides at every login, so I disable it:

$ sudo chmod -x /etc/update-motd.d/10-help-text

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