How To Install Ubuntu 12.10 On Non-PAE CPU

Ubuntu 12.10 and 12.04 use the PAE Linux Kernel by default for 32bit ISOs and while you could use the mini ISO to install Ubuntu 12.04 on computers that don’t support PAE, that’s not possible in Ubuntu 12.10.
Further more, with 12.10, Xubuntu and Lubuntu no longer come with a non-PAE Linux Kernel, so by default, you can’t install any Ubuntu 12.10 flavour on computers using CPUs that lack PAE support (such as Intel Pentium M).

ubuntu 12.10 non-pae
Below you’ll find instructions on how to install Ubuntu 12.10 Quantal Quetzal on computers that don’t support PAE. The instructions have been tested on the default Ubuntu 12.10 ISO (with Unity), but they should work with any Ubuntu flavour like Lubuntu, Kubuntu, Xubuntu and so on and probably Linux Mint 14 as well.

Using the resulting bootable Ubuntu 12.10 USB stick, it should also be possible to upgrade from Ubuntu 12.04 to 12.10, but I’ve only tested it on a clean installation.
Physical Address Extension (PAE) is a feature to allow (32-bit) x86 processors to access a physical address space (including random access memory and memory mapped devices) larger than 4 gigabytes.

Install Ubuntu 12.10 Quantal Quetzal on computers that don’t support PAE
1. Download the required files (includes non-PAE Linux Kernel 3.5.0 deb files).
You can grab all the required files as once, using BZR:
sudo apt-get install bzr
bzr branch lp:~webtom/+junk/linux-image-i386-non-pae
Or, you can download each file manually from HERE (click the green download image on the right).

2. Create a bootable USB stick with the Ubuntu 12.10 32bit ISO and once the stick is ready, open it in your file manager (.e.g. Nautilus) and replace the following files from the USB stick with the files downloaded under step 1:rename the downloaded “vmlinuz-3.5.0-17-wt-non-pae_3.5.0-17.28_i386” file to “vmlinuz” and copy it to the USB stick, under the “casper” folder, replacing the already existing “vmlinuz” file.rename the downloaded “initrd-3.5.0-17-wt-non-pae_3.5.0-17.28_i386.lz” file to “initrd.lz” and copy it to the USB stick, under the “casper” folder, replacing the already existing “initrd.lz” file
3. Copy the following downloaded files to the USB stick (don’t place them in any sub directory):linux-headers-3.5.0-17-wt-non-pae_3.5.0-17.28_i386.deblinux-image-3.5.0-17-wt-non-pae_3.5.0-17.28_i386.deb
Note that these are the 3.5.0-17 Linux headers and image, not 3.5.0-18!

4. Now you can use the USB stick to install Ubuntu 12.10 on the non-PAE capable computer. Once the installation completes, DO NOT REBOOT the computer, press CTRL + ALT + F1 and in the tty, type the following commands to install the non-PAE kernel you’ve copied to the USB stick under step 3:cd /cdrom
sudo dpkg –root=/target -i *.deb
Some warnings will be displayed when running the above command:

ubuntu 12.10 non-pae
ignore these warnings and once the installation completes, reboot the system (you can press CTRL + ALT + F7 to switch back to the installation and reboot from there or type “sudo reboot”).
5. Your computer should now boot the newly installed Ubuntu 12.10 Quantal Quetzal flavour. From the files downloaded under step 1 (or, if you don’t have access to them any more, redownload just the ones below), copy the following files to some folder that doesn’t have any other deb files, e.g. your home directory:linux-image-3.5.0-18-wt-non-pae_3.5.0-18.29_i386.deblinux-headers-3.5.0-18-wt-non-pae_3.5.0-18.29_i386.deb
This is the latest Linux Kernel version available in the Ubuntu 12.10 repositories (3.5.0-18 and not 3.5.0-17 which we’ve used under steps 3-4).

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Lubuntu (w/ LXDE) 12.10 – Quick Overview

Lubuntu, an official Ubuntu flavour starting with version 11.10 which uses LXDE, a lightweight desktop environment by default, has reached version 12.10.

I’m posting this article a bit late, since Lubuntu 12.10 was released 5 days ago, but there are too many Ubuntu flavours to cover in just one day.
Lubuntu 12.10 brings updated artwork, a new session manager, updated file manager which includes an external thumbnailer, along with updated default applications and other changes.
To see the latest Lubuntu 12.10 in action, watch the video below:

(direct video link)
Default applications

Lubuntu 12.10 ships with applications such as Pcmanfm as the default file manager, Synaptic Package Manager, Lubuntu Software Center, Chromium as the default browser, Pidgin, Transmission, mtPaint for simple image editing, Abiword, Gnumeric, GNOME Mplayer, Xfburn, Audacious and others.
Lubuntu Software Center
As you can see, most if not all are lightweight tools, and the result is that Lubuntu requires very low system resources – the Lubuntu wiki mentions that Lubuntu should run even with 128 MB of RAM, though for decent usage, 256MB or RAM or more are required.
In Lubuntu 12.10, a new default application has been added: Catfish, which can be used to search the file system:
lubuntu 12.10 catfish
Another change is the addition of the Xfce notification daemon (xfce4-notifyd), which has replaced the old notification daemon:
lubuntu 12.10 notifications

Pcmanfm, the default file manager, has been updated, the new version bringing external thumbnailer support and lots of bug fixes:
lubuntu 12.10 pcmanfm

It’s also worth mentioning that, unlike the other Ubuntu flavors, Lubuntu 12.10 continues to offer alternate ISO files for download.

Lubuntu 12.10 comes with an updated visual identity, which includes:

– a new wallpaper:

lubuntu 12.10 wallpaper

– a new icon theme (it’s not complete yet, and for now it “inherits” icons from the elementary icon theme) called Box:

You can see some of the new icons in most of the pictures in this post.

Download Lubuntu 12.10
Download Lubuntu 12.10 from HERE and make sure to also read the official release notes.

Originally published at WebUpd8: Daily Ubuntu / Linux news and application reviews.

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