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Want to be a computer EXPERT? PDF Print E-mail
Musings
Monday, 24 August 2009 17:33

XKCD.com has the answer to becoming a computer expert!

 Guide to becoming a computer expert

Source: http://xkcd.com/627/

 
Open Content Textbooks PDF Print E-mail
Musings
Thursday, 13 August 2009 18:32

I recently learned that the free digital textbook competition in California was completed and judged (http://news.slashdot.org/story/09/08/13/1450220/Open-Textbooks-Win-Over-Publishers-In-CA). The findings? Of the 16 books submitted, only 4 met 100% of the California standards. However, none of the "traditional" textbook publishers' books made the cut. Which did? Three were from CK-12 and one from H. Jerome Keisler.

If you're not familiar with CK-12, I'd recommend you check out their site: http://about.ck12.org/. They are a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide. Their books (currently Chemistry, Calculus, Trigonometry, Geometry, Biology, Life Science and Earth Science) are released under a Creative Commons Attribution-Share Alike license.

It is exciting to see such progress in the realm of accessible, open information. Bravo, CK-12, and a big "thank you" to California for pushing America toward a brighter tomorrow.

 
Acer Aspire Timeline 4810T PDF Print E-mail
Linux / Ubuntu / Open-Source
Wednesday, 12 August 2009 13:25

My Dell Inspiron 6400's LCD screen recently failed. After some searching and determining what I wanted in a replacement I decided I wanted to get a laptop that has moderate usefulness for my normal tasks (e.g. writing, programming, graphic design), but with a specific aptitude in battery life and portability. I decided on an Acer Aspire Timeline 4810T.

I installed Ubuntu 9.04 Jaunty Jackalope without incident. Most things worked out-of-the-box. However, two specific problems exist: brightness controls do not work (i.e. they don't affect the brightness) and the optical drive (CD/DVD) never mounts its contents.

Some searching on UbuntuForums.org revealed a quick-and-easy fix for the brightness issue. Run the following command in a terminal:

xrandr --output LVDS --set BACKLIGHT_CONTROL native

Source: http://ubuntuforums.org/showpost.php?p=7673757&postcount=2

I'm still looking for a resolution to the optical drive problem.

Update 2009/08/18:

It appears that the brightness fix was just temporary. The same "fix" must be applied after every reboot. So I can't call it fixed. Here's the list of problems:

  • Backlight controls non-functional without xrandr command
  • Optical drive non-functional
  • Ethernet port non-functional
  • Expanded trackpad functions (i.e. "multitouch")
  • Trackpad lock button will lock the trackpad, but will not un-lock the trackpad
  • Battery life is roughly 1/2 of what it is in Windows (likely due to the Acer power drivers which do things like power down the optical drive while not in use, requiring a button press (eject) to re-activate)… I still get over 4 hours, but the laptop is capable of around 8 hours

 

 
A Tale of Server Freeze PDF Print E-mail
Linux / Ubuntu / Open-Source
Thursday, 26 February 2009 19:05
Last evening I encountered a problem with my primary MythTV backend server which caused me great anxiety. Fortunately, it all ended well. In hopes that I will retain the knowledge, and possibly help others, I'll share what happened.

The  Problem

After a reboot the server would seemingly freeze roughly one-quarter of the way through its boot process. The boot process was entirely graphical, hiding the actual specifics of what was loading, so I couldn't tell what was causing the freeze.

 

Read more...
 


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