Power Computing provided the information in this article and it was deemed accurate as of 14 November 1997. Apple Computer, Inc. is not responsible for its content. This article is being provided as is and will not be updated in the future.

I have a IMS Twin Turbo 128 PCI video card and when I boot up my machine, the monitor has a green cast to it. When I go into the Twin Turbo control panel and turn sync on green off, the cast goes away. However, when I restart, it comes back. What can I do?

Versions of the Twin Turbo software prior to version 3.1 may have difficulty
preserving the sync on green setting. Users experiencing this problem who do not
have version 3.1 or later should install version 3.1 as it provides a fix for
this issue.

There are three parts to the Twin Turbo 3.1 software: the Twin Turbo extension,
the Twin Turbo control panel, and a startup item called Gamma Loader. If the
Gamma Loader application is not present in the Startup Items folder at boot
time. Customers may still see Sync on Green come back, even with the other two
parts installed.

IMS further suggests that customers disable both listed in General Controls in
the Twin Turbo control panel.

Customers with 4MB cards can disable sync on green via hardware by:

1. REMOVE the IMS card from the computer.

2. LOCATE jumper JP4 at the rear of the card, right behind the Macintosh video
port.

3. REMOVE the jumper from the top and middle pins.

4. PLACE the jumper on the middle and bottom pins.

The software fix is the preferred and should be recommended before the hardware
fix. 8MB Twin Turbo cards do not have a removable JP4 jumper and thus no
hardware fix for this problem. There is no hardware workaround available for 8MB
users.


Machines Affected: All Power systems