PGX24 graphics on a Sun Ultra 5

Can someone tell me what versions of Linux support
PGX24 graphics on a Sun Ultra 5 and how to get PGX24
working?

I just got an Ultra 5, 270Mhz with a 21” Sun
GDM-5010PT monitor. I installed RedHat SPARC/Linux 6.2
on it. It’s running good except the graphics is poor
quality. I think it may be running PGX graphics in 8
bit mode.

I ran Xconfigurator and PCI probing finds:
PCI Entry: ATI 3D Rage Pro 215GP
Xserver: Mach64 

Under monitor setup the Sun GDM-5010PT monitor is not
listed so I selected the option for Sun 21-inch N3.

Xconfigurator set the default video mode to:
Color Depth: 32 bits per pixel
Resolution: 1152x864

I have read that Solaris allows changing PGX graphics
mode between 8 bit mode or 24 bit mode. Is there a way
to change graphics mode from 8 bit to 24 bit running
Linux?

Thanks for helping,

Ken


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