How To Fix Undetected Monitor Specs on Ubuntu
Thursday, April 3rd, 2008Do you Ubuntu lovers? I was use ubuntu for few month before I decided to purchased MacBook Pro. For me, Ubuntu is the perfect linux system. Powerful, great members and free!.
Have you ever found any problem with your ubuntu? such as Undetected Monitor Specs? I will show you how to fix it. Just do like this
Open the file /etc/X11/xorg.conf in your favorite text editor. I’ll assume you are using nano for an editor as it is fairly straight forward:
[source:c++]sudo nano /etc/X11/xorg.conf[/source]
Now look for a section in that file called Section “Monitor”. Once you find this section, look at the lines of text between Section “Monitor” and EndSection. There should be two lines in there that begin with the words HorizSync and VertRefresh. If those lines don’t appear there, don’t worry. There is a good chance that we’ve found the problem already!
You will need to gather two bits of information for your monitor now, either from your Monitor User’s Manual, the command line, or from online. Finding these values usually just involves searching [WWW] Google with the model of your monitor. One extensive list is at the [WWW] Lapis forum
We need the horizontal sync frequency (usually measured in kHz) and the vertical refresh rate (usually in Hz). Both of these values are typically given in a range such as “30-98 kHZ” or “50-160 Hz”.
Alternatively, if your monitor supports it, you can just run the following command (install the ‘xresprobe’ package if the command is not available):
[source:c++]sudo ddcprobe | grep monitorrange[/source]
And follow the instructions. and restart you Ubuntu and done 