You can create ModeLine entries from the values found in those two files as well. Be sure to only use values for the specific model of monitor that you have. Note that many 14 and inch monitors cannot support higher resolution modes, and often resolutions of x at low dot clocks. This means that if you can't find high resolution modes for your monitor in these files, then your monitor probably does not support those resolution modes.
If you are completely at a loss, and can't find working ModeLine values for your monitor, you can follow the instructions in the VideoModes. While your mileage will certainly vary when attempting to generate ModeLine values by hand, this is a good place to look if you can't find the values that you need.
Lastly, if you do obtain ModeLine values which are almost, but not quite, right, then it may be possible to simply modify the values slightly to obtain the desired result. Also, be sure to check the knobs and controls on the monitor itself! In many cases it is necessary to change the horizontal or vertical size of the display after starting up XFree86 in order for the image to be centered and be of the appropriate size.
Having these controls on the front of the monitor can certainly make life easier. You shouldn't use monitor timing values or ModeLine values for monitors other than the model that you own.
If you attempt to drive the monitor at a frequency for which it was not designed, you can damage or even destroy it.
The next section of the XF86Config file is Device , which specifies parameters for your video card. Here is an example. This section defines properties for a particular video card. Identifier is an arbitrary string describing the card; you will use this string to refer to the card later. Initially, you don't need to include anything in the Device section, except for Identifier. This is because we will be using the X server itself to probe for the properties of the video card, and entering them into the Device section later.
Before we do this, however, we need to finish writing the XF86Config file. The Driver line specifies the X server that you will be using. The Device line specifies the Identifier of the Device section corresponding to the video card to use for this server. Similarly, the Monitor line specifies the name of the Monitor section to be used with this server. The XF86Config file describes all of these options in detail; most of them are icing on the cake and not necessary to get the system working.
The options that you should know about are: Depth. Defines the number of color planesthe number of bits per pixel. Usually, Depth is set to 8.
For the VGA16 server, you would use a depth of 4, and for the monochrome server a depth of 1. If you are using an accelerated video card with enough memory to support more bits per pixel, you can set Depth to 16, 24, or If you have problems with depths higher than 8, set it back to 8 and attempt to debug the problem later. This is the list of video mode names which have been defined using the ModeLine directive in the Monitor section. In the above section, we used ModeLines named "x" , "x" , and "x".
Therefore, we use a Modes line of Modes "x" "x" "x" The first mode listed on this line will be the default when XFree86 starts up. It might be best, when initially configuring XFree86, to use lower resolution video modes, such as x, which tend to work on most systems. Once you have the basic configuration working you can modify XF86Config to support higher resolutions.
Sets the virtual desktop size. XFree86 has the ability to use any additional memory on your video card to extend the size of your desktop. The simplest case is when there is no existing X installation. The installation procedure for this case is as follows:. If you have an existing installation of X, you should make a backup copy of it before installing the new version over the top of it. Before doing anything else, make sure the extract command is executable, and also link it to the name " gnu-tar " so that it can be used as a regular tar command:.
Once that is done, extract the config files from the Xetc. If you have customised any config files in your old installation, you may want to omit those sub-directories, or copy selected files over by hand. If you ignore this warning and run into problems, well, you were warned! If you have an existing X installation, you will be warned that proceeding with this installation will overwrite it.
Only those things that are part of our standard distribution will be overwritten. Other X applications that you may have installed will not be removed. Some configuration files may be overwritten though, but the installer should prompt you before doing so. As the opening greeting says, it is strongly recommended that you backup any existing installation before proceeding.
It is better to make a copy of it, and then install over the top of the original one. If you run into problems and want to revert to the old installation, you can then delete the overwritten one and copy the saved version back. During the first part of the installation over an existing version, the script may remove some old files or directories that would get in the way of the new installation.
If none are listed, then none were removed. The next step when installing over an existing version is to check for existing configuration files. As of XFree86 version 3. The installer will move the existing ones for you and create the necessary symbolic links. Note: for the rare systems that don't have symbolic links, this question will not be asked.
The default answer is "yes" because that is best for most situations. It is our new default. If you don't need these features, then you can safely answer "no" if you don't want them moved. When installing over an existing version, you will be prompted before each set of configuration files is installed.
If you haven't made any Customisations to your existing configuration files, then you can safely answer "yes" for each of these. If you have made customisations, you can try answering "no". If you run into problems later, you may need to manually merge your customisations into the the new version of the configuration files.
The configuration files can all be found in the Xetc.
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