How to upgrade to Ubuntu 11.10 Beta from Ubuntu 11.04

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Ubuntu released the second beta version of Ubuntu 11.10 OneiricOcelot last week. Final version is scheduled to release on 13 October 2011. 11.10 has some compelling improvements over its predecessors 11.04. If you want to be one of the early followers and want to upgrade it, follow the instructions below:

  • Press Alt+F2 to open the command box
  • Type “update-manager -d” (without the quotes)
  • Please mind the space between manger and -d
  • Update Manager should open up and tell you: New distribution release ‘11.10’ is available.
  • Click Upgrade and follow the on-screen instructions.

Enjoy Ubuntu 11.10.

Sources: https://wiki.ubuntu.com/OneiricOcelot/TechnicalOverview/

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How to solve: Ubuntu update error

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Problem:

Sometimes it happens that running the updates in Ubuntu results in following error:

Could not initialize the package information.
An unresolvable problem occurred while initializing the package information.
Please report this bug against the ‘update-manager’ package and include the following error message:
‘E:Encountered a section with no Package: header, E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_natty_main_binary-amd64_Packages, E:The package lists or status file could not be parsed or opened.’

While running sudo apt-get update results in the following error:

Reading package lists… Error!
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_natty_main_binary-amd64_Packages
E: The package lists or status file could not be parsed or opened.

Moreover, Synaptic Manger fails to start as well.

Solution:

The trick which worked with me is running following commands in the terminal (open terminal using Ctrl+Alt+T):

sudo rm -rf /var/lib/apt/lists/*
sudo apt-get update

Hope it solved your problem. Please do subscribe the blog to stay in touch. Suggestions, questions and feedback are welcome. Enjoy :)

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How to know if I’m running 32 bit or 64 bit Ubuntu?

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There are several ways to know the architecture of the Ubuntu you are using. I prefer “uname” command to find it out.

Type in the terminal: uname -a

Output: Linux desktop-name 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

Conclusion: x86_64 (or i686) denotes 64 bit and x86 (or i386) represents 32 bit.

Extra: To know the processor: “uname -p”

To know the hardware platform: “uname -i”

To know machine hardware name: “uname -m”

In all the above cases: x86_64 (or i686) denotes 64 bit and x86 (or i386) represents 32 bit.