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3.2.1
Minimum Console Revision
The minimum firmware version for ATI RADEON 7500 graphics controller single head
support is V1.0 on hp AlphaServer GS1280, ES80 and ES47 systems. For other Alpha
System types, please refer to your System QuickSpecs for information on minimum
requirements and restrictions.
3.2.2
Multiple Colormaps
Multiple colormaps are not supported. The ATI RADEON 7500 graphics controllers support
only one installed colormap at one time. Exceeding this limit will cause colormap flashing,
also known as "technicolor."
Applications should not install or de-install 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 de-install. You provide this
information using the Xlib function XSetWMColormapWindows(). This function sets
the WM_COLORMAP_WINDOWS property for a given window.
3.2.3
Default Visual Information
The ATI RADEON 7500 graphics controller can only support one visual type at one time.
Supported default visual types are 8-bit PseudoColor, 16-bit TrueColor, and 24-bit
TrueColor. The default depth and visual class is 24-bit TrueColor. To change the default
visual, you must edit the X server's configuration parameters which are located at
/usr/var/X11/Xserver.conf.
As an example, to switch to 8-bit PseudoColor, do the following:
! RADEON Server args start
-pn -bs -su -depth 8 -vclass PseudoColor
! RADEON Server args end
You then need to restart the X server (you must login remotely or via a serial console):
# /sbin/init.d/xlogin stop
# /sbin/init.d/xlogin start
3-2 ATI RADEON 7500 AGP and PCI Graphics Controllers
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