On some reasons by default these modules are not present in X11 config, but, to the measure for me these modules in 2 times accelerate the capacity of performance.
First you need to take the backup of your xorg.conf file using the following command
cp /etc/X11/xorg.conf /etc/X11/xorg.conf.back
Now you need to edit /etc/X11/xorg.conf file using the following command
sudo gedit /etc/X11/xorg.conf
Add the following lines
Section "Module"
Load "i2c"
Load "bitmap"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx" # If you have VESA driver, comment this.
Load "int10"
Load "vbe"
EndSection
Save and exit the file.
Saturday, 24 May 2008
Howto Increase video performance in Ubuntu
Howto Setup Lexmark Z55 printer in Ubuntu Hardy Heron
This tutorial describes how to install a Lexmark Z55 printer on Hardy Heron.
By default the wrong driver is installed for the Z55 which causes the printer to squeal and fail to print. A driver is available from the Lexmark website for Linux rpm distributions.
1. Download
Download the file CJLZ55LE-CUPS-1.0-1.TAR.GZ from the Drivers and Downloads section of the Lexmark website. Select a Linux distribution such as Mandrake.
2. Uninstall the existing driver
System->Administration->Printing
Expand "Local Printers"
Click on "Lexmark_Z55" to select it
Press the "Delete" button and confirm with OK
3. Create directory
Create a directory to work in and move the downloaded file into this new directory.
mkdir lexmark
mv CJLZ55LE-CUPS-1.0-1.TAR.GZ lexmark
4. Extract rpm files from the download
tail -n +143 lexmarkz55-CUPS-1.0-1.gz.sh > install.tgz
tar -xvzf install.tgz
5. Convert rpm files into deb packages
First install the alien package if you have not already done so.
sudo apt-get install alien
Now convert the files ignoring any warnings.
sudo alien lexmarkz55-CUPS-1.0-1.i386.rpm
sudo alien z55llpddk-2.0-2.i386.rpm
Save the deb files in a safe place. For subsequent installations you can use these files.
6. Install the packages
The deb files can now be installed using any method you prefer. To install from the command line type:
sudo dpkg -i z55llpddk_2.0-3_i386.deb
sudo dpkg -i lexmarkz55-cups_1.0-2_i386.deb
7. Unzip ppd file
cd /usr/share/cups/model
sudo gunzip Lexmark-Z55-lxz55cj-cups.ppd.gz
8. Install the new driver
System->Administration->Printing
Press the "New Printer" button
Select "Lexmark Z55 USB #1"
Press "Forward"
Select "Provide PPD file"
Click on the file icon on the right hand side of the box below
Using the file picker select /usr/share/cups/model/Lexmark-Z55-lxz55cj-cups.ppd
Press "Forward"
Press "Apply"
Thursday, 22 May 2008
Auto-mounting internal drives in Ubuntu
So I've noticed when running Ubuntu that while my external drives will show up on my desktop when I turn the computer on, my internal drives don't. They were still accessible from the Places Menu, but they had to mount on the first click, and then I could open them. Obviously, this is not the desired behavior. So I did a bit of digging and I found the problem. HAL apparently tells gnome-volume-manager not to auto-mount internal drives. I found the file containing this policy, and fixed the problem.
The file is this one:
/etc/hal/fdi/policy/preferences.fdi
sudo gedit /etc/hal/fdi/policy/preferences.fdi
To fix it so that internal drives will show up on your desktop when you boot up, change this line
PDF printing from Firefox in Ubuntu Hardy
Hopefully, this will prove useful to anyone who is trying to print a webpage using the CUPS-PDF virtual printer only to find that the resulting file has truncated text because the webpage was too wide (e.g. menu frame on the side).
Resizing the page using Zoom only changes what you see on the screen rather than what you print.
1. In Firefox, use FILE - PAGE SETUP to change the size to something larger, e.g. A3
2. Then CTRL+P to print, but instead of using the 'Print to PDF' option, choose 'Print to File instead. In the window that opens, then select PDF as 'Output Format'.
Getting your Dell service tag number from command line in Ubuntu
If you’re using Ubuntu with a Dell computer, there is a handy command to get your service tag number. This is handy in support situations when the service tag number can’t be read because it’s inaccessible, too small, or simply gone.
Open the terminal window in the Accessories > Applications menu and type the following command
sudo dmidecode -s system-serial-number
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