Compaq VX1 manual Restrictions and Limitations, Minimum Console Revision, Multiple Colormaps

3.2Restrictions and Limitations

This section of the document contains limitations and restrictions of the OXYGEN VX1 hardware and software.

3.2.1Minimum Console Revision

The minimum Tru64 UNIX firmware version for 3Dlabs OXYGEN VX1 PCI graphics controller single head support is V5.8 (V5.9 for multihead configurations – see Section 3.4).

3.2.2Multiple Colormaps

Multiple colormaps are not supported. The 3Dlabs OXYGEN VX1 PCI graphics controller supports only one installed colormap at one time. Exceeding this limit will cause colormap flashing, also known as "technicolor."

Applications should not install or deinstall colormaps themselves. The window manager should perform these actions. However, the application is responsible for providing the window manager with hints as to which colormaps to install or deinstall. You provide this information using the Xlib function XSetWMColormapWindows(). This function sets the WM_COLORMAP_WINDOWS property for a given window.

3.2.3Default Visual Information

The 3Dlabs OXYGEN VX1 board can only support one visual type at one time. Supported visual types are 8-bit PseudoColor, 16-bit TrueColor, and 24-bit TrueColor. By default, the default depth and visual class is 8-bit PseudoColor. To change the default visual, you must edit the X server's configuration file which is located at /usr/var/X11/Xserver.conf.

As an example, to switch to 24-bit TrueColor:

! Permedia VX1 Server args start

-pn -bs -su -nice -2 -depth 24 -vclass TrueColor ! Permedia VX1 Server args end

You then need to restart the X server. When logged in remotely:

/usr/sbin/init.d/xlogin restart

3-2 3Dlabs OXYGEN VX1 PCI Graphics Controller Installation Guide