Tag Archives: Ubuntu tutorial

Tutorial of the Month – June 2010

June 2010 – Apparmor

What a subject.. We’ll step out of the T&T section this month to visit the Security Discussions area.
bodhi.zazen spends a lot of time in this section, educating and providing support.
apparmor (Application Armor) does what its name suggests, it helps protecting the system if an application gets compromised. apparmor works with specific application profiles that regulate and define the applications access in addition to the usual system permissions (which apparmor can only restrict).

By default, Ubuntu comes with apparmor profiles for CUPS, evince, dhclient3, firefox (which is not enabled) and the guest session.

The first thread to read is Introduction to AppArmor which is closed for posting. Two other threads are open for discussion:
Share your AppArmor Profiles and AppArmor Support Thread.

Enjoy the readings, test it out and report back in the threads!

References

UF ToM thread
Introduction to AppArmor
Share your AppArmor Profiles
AppArmor Support Thread

UF Tutorial of the Week – October 05, 2009.

Quite often, there is a delay between latest stable application version from an upstream project and updated version from the Ubuntu repositories. This gap is quite important with ALSA. Here is a tutorial from soundcheck that will help you install the latest official stable ALSA release: “ALSA Upgrade Script“. The script should be used with caution as it installs packages itself without going through official repositories. A restore option is provided to reinstall sensitive packages and get them back to their previous Ubuntu version. Many sound issues appear to be solved by this tutorial! Sound should be treated like video via restricted hardware..

Enjoy :)

Reference

UF post
soundcheck’s tutorial on UF
UWN

UF Tutorial of the Week – September 21, 2009.

DSDT (Differentiated System Description Table) is in the BIOS and this is where the OS looks for hardware and configuration info. It sometimes needs to be adjusted, in particular regarding ACPI. 67GTA has written a comprehensive tutorial for Ubuntu and Linux Mint: “HOWTO Fix A Buggy DSDT File” which currently works only up to Jaunty 9.04 release. I’m not sure I understand all the details, but reading through the thread, members seem to be able to fix a large range of ACPI related issues.

Credits to unutbu who suggested the tutorial. As unutbu puts it:

It is kind of amazing (at least to me) that fixing one file can solve such a variety of problems.

Reference

UF post

UF Tutorial of the Week – August 24, 2009.

Long time no see :)

This is the second ToW from master_kernel, a very popular and supported tutorial started in December 2006. Such dedication and popularity had to be recognized. Ever dreamed to compile your kernel? Check the “Master Kernel Thread” and dive! master_kernel will be there to give you a hand. Nice work, see you soon :)

Reference

http://ubuntuforums.org/showpost.php?p=7827170&postcount=59

UF Tutorial of the Week – July 13, 2009.

tinivole has put together all the instructions to solve problems when using NViDIA video cards of the 8400 series and up. He is actively supporting his tutorial and many people have given input. Debugging steps are suggested if all does not go as per the book, as well as reverting the changes and going back to the ubuntu supported drivers.

The tutorial is located here: HowTo: NViDIA 185.18 Drivers in Ubuntu

Enjoy and see you soon :)

Reference

http://ubuntuforums.org/showpost.php?p=7597613&postcount=57

UF Tutorial of the Week – July 6, 2009.

July 6, 2009.

This week we would like to highlight FakeOutdoorsman‘s well written and nicely presented “HOWTO: Easily enable MP3, MPEG4, AAC, and other restricted encoding in FFmpeg“. As pointed out in the thread, this tutorial clears up some confusion linked to legal reasons restricting the abilities of the ubuntu provided FFmpeg package. Several options are provided, along with the steps to follow to revert changes and remove the restricted packages. Well done!

Reference

http://ubuntuforums.org/showpost.php?p=7557241&postcount=56