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XF86_Mach64 failure in 16 bpp mode
Hello.
I have problem with running Mach64 server from 3.2 release
in 16 bpp mode. When I do 'startx -- -bpp 16' I get something
VERY strange in 800x600 mode: the narrow leftmost strip of the
screen is duplicated many times and fills up the whole screen.
When I do Ctrl-Alt-+ to 640x480 mode everything is OK. Switching
back to 800x600 gives back this weird behavior. The same 800x600
mode works fine with 8 bpp.
When I used beta versions from 3.1.2 release ( 3.1.2D and up),
I had no such problems while using exactly the same setting for
800x600 mode .
======================================================
Here is description of my video card.
=======================================================
First video: Super-VGA
Chipset: ATI 264CT (Port Probed)
Memory: 1024 Kbytes
RAMDAC: ATI Mach64 integrated 15/16/24/32-bit DAC w/clock
(with 6-bit wide lookup tables (or in 6-bit mode))
(programmable for 6/8-bit wide lookup tables)
Attached graphics coprocessor:
Chipset: ATI Mach64
Memory: 1024 Kbytes
=======================================================
The relevant parts of XF86Config file :
=======================================================
Modeline "800x600" 50 800 872 992 1040 600 637 643 666 +hsync +vsync
Subsection "Display"
Depth 16
Modes "800x600" "640x480"
ViewPort 0 0
Virtual 800 600
EndSubsection
========================================================
I use Slackware96 distribution and fvwm95 window manager.
I would appreciate your help
Boris Zingerman.