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(II) MGA(0): Supported additional Video Mode:
(II) MGA(0): clock: 146.2 MHz Image Size: 433 x 271 mm
(II) MGA(0): h_active: 1680 h_sync: 1784 h_sync_end 1960 h_blank_end 2240 h_border: 0
(II) MGA(0): v_active: 1050 v_sync: 1053 v_sync_end 1059 v_blanking: 1089 v_border: 0
(II) MGA(0): Ranges: V min: 48 V max: 85 Hz, H min: 30 H max: 94 kHz, PixClock max 170 MHz
This information is called EDID information. Creating a `ModeLine` from this is just a matter of putting the numbers in the correct order:
ModeLine <name> <clock> <4 horiz. timings> <4 vert. timings>
So that the `ModeLine` in `Section "Monitor"` for this example would look like this:
Section "Monitor"
Identifier "Monitor1"
VendorName "Bigname"
ModelName "BestModel"
ModeLine "1680x1050" 146.2 1680 1784 1960 2240 1050 1053 1059 1089
Option "DPMS"
Now having completed these simple editing steps, X should start on your new widescreen monitor.
Troubleshooting Compiz Fusion
I have installed Compiz Fusion, and after running the commands you mention, my windows are left without title bars and buttons. What is wrong?
You are probably missing a setting in [.filename]#/etc/X11/xorg.conf#. Review this file carefully and check especially the `DefaultDepth` and `AddARGBGLXVisuals` directives.
When I run the command to start Compiz Fusion, the X server crashes and I am back at the console. What is wrong?
If you check [.filename]#/var/log/Xorg.0.log#, you will probably find error messages during the X startup. The most common would be:
(EE) NVIDIA(0): Failed to initialize the GLX module; please check in your X
(EE) NVIDIA(0): log file that the GLX module has been loaded in your X
(EE) NVIDIA(0): server, and that the module is the NVIDIA GLX module. If
(EE) NVIDIA(0): you continue to encounter problems, Please try
(EE) NVIDIA(0): reinstalling the NVIDIA driver.
This is usually the case when you upgrade Xorg. You will need to reinstall the package:x11/nvidia-driver[] package so glx is built again.