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Title: TFT-Displays and Trident Cyber chipsets

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TFT-Displays and Trident Cyber chipsets

Applies to

XFree86: Versions since 3.3.3

Symptom:

Running XFree86 on a laptop using a TFT display in combination with a Trident Cyber video chipset sometimes leads to a distorted display and a white glowing screen, which can even damage the display permanently.

Cause:

Certain BIOS settings negatively affect the behaviour of the X-Server.

Solution:

You must disable the "Panel Stretch" or "Extend Panel" option in the Laptop BIOS. This is the option that creates the full screen 640x480 and 80x25 text mode on these laptops.

Once you disable this option in the BIOS, the "glowing white screen" effect is gone. Then it takes some playing with options like "cyber_shadow" to get the display working. See the XFree86 Release Notes for Trident chipsets at /usr/doc/packages/xf86/README.trident for further info. Additionally, you must not use vesafb together with the X server it seems.

Update (8/5/99):
Obviously this phenomenom is also dependent on the BIOS-version of the Computer. Upgrading the System BIOS to the latest revision has solved the problem in one reported case (thanks to Martin Kolde for reporting this). The Option "cyber_shadow" has not been used in this case.

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Keywords: TFT, LCD, NOTEBOOK, TRIDENT, CYBER, 9385, XFREE, XSERVER, LAPTOP

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Categories: XFree86 , Graphic cards , X Window System

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Mainpage o Searchform o History o Versions o Categories o Contents
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SDB-grimmer_cyber9385, Copyright SuSE GmbH, Nuremberg, Germany - Version: 30. Jul 1999
SuSE GmbH - Last generated: 07. Oct 1999 16:40:19 by maddin with sdb_gen 1.00.0