Dual booting with GRUB, Ubuntu Jaunty, and Ext4

Ubuntu Jaunty Alpha 3 gave the option if using ext4 so I gave it a try on my experimental machine. There were already partitions for Win 98, Win XP, Intrepid, Kubuntu, and Jaunty Alpha 2. The new grub installed by alpha 3 worked fine but I wanted to reuse the menu.lst file in my Intrepid partition. I rebooted into the Intrepid partition and used the standard tricks with grub (see Win98, WinXP, and Intrepid Partitions to reinstall grub and point it to menu.lst in the Intrepid partition. I added the updated details for jaunty and rebooted. Big mistake. That version of grub didn’t work with ext4. Sigh. So I reinstalled Jaunty and simply modified its menu.lst based on the details in the Intrepid menu.lst that I wished to keep (e.g. the splash screen). Success. And now to start working with Jaunty (which is where I am posting this from).

Fine tuning Logitech Quickcam Chat in Ubuntu Intrepid

I have managed to get the Logitech Quickcam Chat working under Ekiga and Cheese in Ubuntu Intrepid but at night time my images were very dark. And there was no way of adjusting the brightness.

The solution was found here: http://ubuntuforums.org/archive/index.php/t-984126.html. I installed v4l2ucp from http://www.debian-multimedia.org/dists/stable/main/binary-i386/package/v4l2ucp.php. Ran it from the terminal with the command v4l2upc and got a GUI. Exposure was the main setting I adjusted. The frame rate plummeted as the exposure increased (this thread suggests a direct link between the two) so I set it at the slowest frame rate that was satisfactory. I also found that spotlights do not light my face at all well and a side lamp makes the image much, much brighter, thus allowing a faster frame rate.

Citrix ICA Client under Ubuntu Hardy

A friend needed to get into their work Citrix network from Ubuntu Hardy but they were stymied by instructions about installing an ICA Client for Linux. The fact that the login page had links to vastly out-of-date ICA clients for linux didn’t help. The latest ICA client can be found here: http://www.citrix.com/site/SS/downloads/details.asp?dID=2755&downloadID=3323&pID=186#top. Version 10.6 was the most recent I found. We got the .tar.gz version and we needed to unpack it somewhere and run setupwfc. The easiest way to do this was to create a folder under tmp:

mkdir /tmp/citrix/

Then open nautilus (the Gnome file manager) as superuser to make the other steps easy:

gksu nautilus
NB gksu not sudo when a graphical application

Unpack the tar.gz file e.g. en.linuxx86.tar.gz into /tmp/citrix
Then double click setupwfc and select Run in Terminal. Follow the defaults.

The final step is to enable the appropriate permissions:

sudo cp /usr/share/ca-certificates/mozilla/* /usr/lib/ICAClient/keystore/cacerts/

(Thanks to http://blog.torh.net/2008/02/29/problems-with-citrix-client-on-linux/ for that solution.

Better Python Console Gedit Plugin

Just came across Better Python Console – which is a plugin for Gedit, the main text editor in Ubuntu. Think of it as being like IDLE. I use Eclipse with PyDev and the PyDev extension for heavy development and the console for anything quick and dirty.

Get the plugin, plus some basic info, here –

Remember, to work successfully, the betterpythonconsole needs the plugin file (“betterpythonconsole.gedit-plugin”) copied into the /usr/lib/gedit-2/plugins folder. The betterpythonconsole folder (containing 4 or so scripts only) needs to be there as well.

Audigy Ubuntu Sound Problem Solved (Digital Jack On)

I couldn’t get any sound from the family/business computer’s Audigy 2 card under Ubuntu Intrepid. Strange – it worked under the dual boot Windows. And I was sure I had had it working before. The problem? Under Sound>Switches the Audigy Digital Jack was set to On. I set it off, made sure all the sound was set to AutoDetect, and rebooted. Voila – sound.