Matrox G100/G200/G400/G450/G550 driver for (open)BeOS


You use this software at your own risk! Although I don't expect it to damage your PC, videocard or Monitor, I cannot guarantee this!

OK, now that's said let's get to it ;-)

In contrary to what I have said before you don't need to de-install official Be drivers for this driver to work correctly. This driver will install in the user part of the BeOS, so not in the system part where the official drivers are.
BeOS first checks (during boot) if there are 'user-addons' that should be loaded for a device. If not, it loads it's own drivers (if any). You can select which driver should be loaded by hitting the spacebar as soon as the BeOS 'icons' screen appears. If you select disable user addons the system will load it's own drivers. If you don't do anything, the system will load the (open)BeOS Matrox MGA driver.

Since BeOS only supports all Matrox cards upto and including G400 you will end up in VGA grayscale videomode if you have a G450 or G550. Otherwise, you will have a normal colorfull Desktop. Only BeOS will be using it's own official drivers in this case...

Note: This might turn out to be handy if you run into trouble upon testing the driver, or if you are 'tweaking' the mga.settings file...

actual INSTALLATION, part 1:

If you used Mark Watson's G400 driver (upto and including V0.12), or the (open)BeOS driver V0.13 alpha1 (which was based on Mark's driver directly), you need to do an extra manual step *once* in order to activate the new driver:

You must remove Mark's driver manually. (If you don't, the new driver won't be loaded!)
In order to do this, you need to delete two files (and reboot afterwards). Here's how:
If you install a new version of the (open)BeOS MGA driver later on you won't encounter this manual thing again: it's a one-time thing only.

actual INSTALLATION, part 2:

Doubleclick on the file and follow the instructions. You have to reboot in order to load the driver. Make sure you read the Settings information below before you do that...

alternate INSTALLATION (part 2) method:

Unzip the zip file that contains the driver to the root folder. Now reboot and you should be using the new driver.


Currently there's no uninstall script included. Just do it manually:

Delete the mga.accelerant file in home/config/add-ons/accelerants/
Delete the mga.driver file in home/config/add-ons/kernel/drivers/bin/
Delete the mga.settings file in home/config/settings/kernel/drivers/
Delete the mga.driver shortcut in home/config/add-ons/kernel/drivers/dev/graphics/ which pointed to the file mga.driver.

You have to reboot in order to apply the original configuration.


Please read this information carefully *before* installing and using the (open)BeOS Matrox MGA driver. It might spare you some trouble afterwards..

The driver uses a file named mga.settings to determine how to use your card. After installation this file will be located at home/config/settings/kernel/drivers/. How you should setup this file depends on what you want to do with the driver. While it has a 'failsave' default configuration, you might be able to do better than that... Anyway, read the nifty details below.

Note: The driver only reads this file during it's initialisation. This means that you have to reboot in order to let changes take effect.

mga.settings driver configuration:



(Page last updated on June 12, 2004)