Benaiah\’s Computer Experiences

November 1, 2008

Ubuntu 8.10 Freezes After Login Screen

Filed under: Linux, ubuntu — Tags: , , , , , — Benaiah @ 12:13 pm

Some integrated Intel graphics cards are having a hard time with the new Ubuntu 8.10 release.  The symtom is that after the install you can’t get past the login screen.  It accepts your login but instead of loading the desktop all you see is a black or tan screen (sometimes my mouse would move and other times it wouldn’t).  This happens because the graphics card cannot handle the compiz special effects. To fix the problem you need to remove compiz.  Here’s how:

1. From the Grub boot menu slect the “recovery mode” option.

2. Select “root       Drop to root shell prompt”

Type the following at the prompt:

3. sudo apt-get remove compiz

4. sudo apt-get remove compiz-core

5. exit

6. Select “resume      Resume normal boot”

You should now be up and running!  If you want to try to use compiz later install it through the Synaptic Package Manager.

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August 15, 2008

Add User to “sudoers” File

Filed under: Linux, ubuntu — Tags: , — Benaiah @ 10:17 am

To give a user the ability to use the “sudo” command you must add them to the “sudoers” file.  Here’s how.

Thanks to ubuntucat (see comment below) for the following suggestion!  The easiest way to allow a user to sudo is to simply run the following command from the Terminal:

To open the Terminal:

Applications >> Accessories >> Terminal

Once the Terminal is open type:

sudo adduser username admin

This must be done from an account that already has sudo abilities or else from the root account.

If for some reason you have to manually edit the “sudoers” file keep reading!

Open the file “sudoers” located at /etc/sudoers using your favorite text editor.  You must have root permissions to be able to edit this file so you will want to open your editor from the command line.

To use gedit you would do the following:

Open the Terminal and type:

sudo gedit /etc/sudoers

If you want to use vim you can simply enter the following into the Terminal:

sudo visudo

Once you have the sudoers file open, scroll down to the line:

root   ALL = (ALL)    ALL

Add the folling line below the root line (replacing “user” with the name of the account you wish to give sudo access to)

user   ALL = (ALL)    ALL

Save and close the file.  The new user has now been added to the “sudoers” file and can use the “sudo” command.

May 31, 2008

Fix Broken Windows Updater after IE7 Install

Filed under: computer help, install, windows, windows maintenance — Tags: , , — Benaiah @ 8:00 pm

I have had this problem twice after first installing SP3 for Windows XP and then installing IE7 through Windows Update.  Windows Upadate breaks, it will download the updates but it fails when it tries to install them.  Here is how I fixed the problem.

1)  I created a folder called  “WUAGENT” on my C drive.  The address is C:\WUAGENT  This name is irrelevant,  you can call it whatever you want.

2) Download “WindowsUpdateAgent30-x86.exe” to the folder you just created. Click here to download it.

3) Open a command prompt (Start >> Run and type “cmd”).  Run the following command to force run the exe file you just downloaded.

C:\WUAGENT\WindowsUpdateAgent30-x86.exe /wuforce

Windows Updater should now work again!

May 19, 2008

Ubuntu Command-Line Reference

Filed under: Linux, ubuntu — Tags: , , — Benaiah @ 8:06 pm

Here is a nice reference sheet I found for the linux command line.  Click the link to download the PDF.

Ubuntu Reference Sheet

May 12, 2008

Installing Flash Pulgin for Firefox in Ubuntu

Filed under: flash, install, Linux, plugins — Benaiah @ 8:07 am

Simply run this command from the terminal:

sudo apt-get install flashplugin-nonfree

Restart Firefox.

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