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This means that the x server can't find an entry in the 'screen' section of your XF86Config file matching the mode 640x400. Depending on your video card you may have to run the Superprobe program to probe for the dot clocks for your card. What type of card (chipset, memory, etc) do you have? Was it running before or are you setting up X for the first time?<br />
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This means that the x server can't find an entry in the 'screen' section of your XF86Config file matching the mode 640x400. Depending on your video card you may have to run the Superprobe program to probe for the dot clocks for your card. What type of card (chipset, memory, etc) do you have? Was it running before or are you setting up X for the first time?



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when I run the startx command I get the message:<br />
&quot;there is no defined dot-clock matching mode &quot;640x400&quot;&quot;<br />
I have no idea what a dot-clock is or where I have to<br />
enter it in the XF86Config file !!!
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when I run the startx command I get the message:
"there is no defined dot-clock matching mode "640x400""
I have no idea what a dot-clock is or where I have to
enter it in the XF86Config file !!!

problems at startx

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.