For a complete discussion on the dot clock limitations, see the next section. Many potential programmable clock register setting are unstable. It is possible that the chip could be misidentified, particular due to interactions with other drivers in the server. If you use the ” overlay ” option, then there are actually two framebuffers in the video memory. This option allows the user to force the server the reprogram the flat panel clock independently of the modeline with HiQV chipset.

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So the value actually used for the memory clock might be significantly less than this maximum value.

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You can use the ” SetMClk ” option in your xorg. Leaving too little memory available for the cache will only have a detrimental effect on the graphics performance. There is the limit of the maximum dotclock the video processor can handle, and there is another tcehnologies of the available memory bandwidth.

This option might also be needed to reduce the speed of the memory clock with the ” Overlay ” option. Using an 8bpp, the colour will then be displayed incorrectly. Linear addressing is not supported for this card in the driver. This is usually due to a problem with the ” LcdCenter ” option. Also check the BIOS settings.

This is a problem with the video BIOS not knowing about all the funny modes that might be selected.

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Use caution with this option, as driving the technologiex processor beyond its specifications might cause damage. By default linear addressing is used on all chips where it can be set up automatically. This might cause troubles with some applications, and so this option allows the colour transparency key to be set to some other value.

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On a cold-booted system this might be the appropriate value to use at the text console see the ” TextClockFreq ” optionas many flat panels will need a dot clock different than the default to synchronise. Using this option, when the virtual desktop is scrolled away from the zero position, chipd pixmap cache becomes visible. Similar to the but has yet higher maximum memory and pixel clocks. If you are driving the video memory too fast too high tcehnologies MemClk you’ll get pixel corruption as the data actually written to the video memory is corrupted by driving the memory too fast.

A ” letterbox ” effect with no stretching can be chios using this option. The lower half of the screen is not accessible. With this option all of the graphics are rendered into a copy of the framebuffer that is keep in the main memory of the computer, and the screen is updated from this 65550. Many DSTN screens use the top of video ram to implement a frame accelerator.

It also includes a fully programmable dot clock and supports all types of flat panels.

Information for Chips and Technologies Users

Some users prefer to use clocks that are defined by their BIOS. This option, selects an 18 bit TFT bus. With the chips and later or thethe default is to use the programmable clock for all clocks. Which results in the x mode only expanded to x For this reason the default behaviour of the server is to use the panel chipw already installed in the chip.


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You are using a mode that your screen cannot handle. Note that increasing the memory clock also has its own problems as described above.

It should be noted that if a flat panel is used, this it must be allocated to ” Screen 0 “. This option allows the user to force the server the reprogram the flat panel clock independently of the modeline with HiQV chipset.

Which is the reason for the drop in the dot clock. Some machines that are known to need these options include. The Xserver assumes that the framebuffer, if used, will be at the top of video ram.

The ” FixPanelSize ” can be used to force the modeline values into the panel size registers. Alternatively the user can use the ” TextClockFreq ” option described above to select a different clock for the text console.