The forms given below are the preferred forms. On a cold-booted system this might be the appropriate value to use at the text console see the ” TextClockFreq ” option , as many flat panels will need a dot clock different than the default to synchronise. For instance, the line. Try a lower dot clock. Hi-Color and True-Color modes are implemented in the server. However luckily there are many different clock register setting that can give the same or very similar clocks. If you find you truly can’t achieve the mode you are after with the default clock limitations, look at the options ” DacSpeed ” and ” SetMClk “.

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Org releases later than 6.

A general problem with the server that can manifested in many way such as drawing errors, wavy screens, etc is related to the programmable clock. However there are many differences at a register level. If you exceed the maximum set by the memory clock, you’ll get corruption on the screen during graphics operations, as you will be starving the HW BitBlt engine of clock cycles.

This chip is nad identical to the It has the same ID and is identified as a when probed. The Chips and Technologies chipsets supported by this driver have one of three basic architectures. Alternatively the user can use the ” TextClockFreq ” option described above to select a different clock for the text console.

Chips and Technologies

You can avoid this by either using the ” NoStretch ” option or removing the HWcursor ” option. If you are driving the video memory too fast too high a MemClk you’ll get pixel corruption as gech.65550 data actually written to the video memory is corrupted by driving the memory too cbips. For x chipsets the server assumes that the TFT bus width is 24bits. Most of the Chips and Technologies chipsets are supported by this driver to some degree.


Information for Chips and Technologies Users

Many laptops use the programmable clock of the x chips at the console. The HiQV chipsets contain a multimedia engine that allow a 16bpp window to be overlayed on the screen.

The default behaviour is to have both the vhips panel and the CRT use the same display channel and thus the same refresh rate. For chipsets incapable of colour depths greater that 8bpp like thethe dotclock limit is solely determined by the highest dotclock the video processor is capable of handling.

Also the maximum size of the desktop with this option is x, as this is the largest window that the HiQV multimedia engine can display. Many potential programmable clock register setting are unstable. Therefore to use this option the server must be started in either 15 or 16bpp depth.

Except for the HiQV chipsets, it is impossible for the server to read the value of the currently used frequency for the text console when using programmable clocks. A basic architecture, the WinGine architecture which is a modification on this basic architecture and a completely new HiQV architecture. When the size of the mode used is less than the panel size, the default behaviour of the server is to align the left hand edge of the display with the left hand edge of the screen. This information will be invaluable in debugging any problems.


However luckily there are many different clock register setting that can give the same or very similar clocks. Dual refresh rate display can be selected with the ” DualRefresh ” option described above. In addition anx this many graphics operations are speeded up using a ” pixmap cache “. Many DSTN screens use frame acceleration to improve the performance of the screen. For this reason, the maximum colour depth tevh.65550 resolution that can be supported in a dual channel mode will be reduced compared to a single display channel mode.

Try this if the cursor seems to have problems.

This is useful for the chipset where the base address of the linear framebuffer must be supplied by the user, or at depths 1 and 4bpp. The total memory requirements in this mode of operation is therefore similar to a 24bpp mode.

For this reason the default behaviour of the server is to use the panel timings already installed in the chip. It is possible to use the fixed clocks supported by the chip instead by using this option. The Chips and Technologies driver release in X11R7.

This is a very similar chip to the These option individually disable the features of the XAA acceleration code that the Chips and Technologies driver uses. A similar level of acceleration to the is included for this driver.