This is a copy of a bug report sent to XF86.org. The Xserver startup output
is copied below.

XFree86 Version: 3.3.6


OS: other
    Linux x86 system, Linux operating system 2.2.5-22smp i686 [ELF] (Red
Hat 6.2)

Area: Xserver

Server: XF86_Mach64

Video Card:

ATI Graphics Pro Turbo w. AT&T 20C408 RAMDAC
SuperProbe info: Chipset ATI 88800GX-D
Memory: 2048 KB
RAMDAC: AT&T 20C408; 15/16/24-bit DAC w/clock (with 6-bit wide lookup
tables (or in 6-bit mode))
(programable for 6/8-bit wide lookup tables)
Attached Graphics Coprocessor: Chipset MACH 64; memory 2048 KB

Description:



XFree86 Version 3.3.6 / X Window System
(protocol Version 11, revision 0, vendor release 6300)
Release Date: January 8 2000
	If the server is older than 6-12 months, or if your card is newer
	than the above date, look for a newer version before reporting
	problems.  (see http://www.XFree86.Org/FAQ)
Operating System: Linux 2.2.5-22smp i686 [ELF]
Configured drivers:
  Mach64: accelerated server for ATI Mach64 graphics adaptors (Patchlevel
1)
(using VT number 7)

XF86Config: /usr/X11R6/lib/X11/XF86Config
(**) stands for supplied, (--) stands for probed/default values
(**) XKB: keymap: "xfree86(us)" (overrides other XKB settings)
(**) Mouse: type: Microsoft, device: /dev/mouse, baudrate: 1200
(**) Mouse: buttons: 3, 3 button emulation (timeout: 50ms)
(**) Mach64: Graphics device ID: "ATI Graphics Pro Turbo with AT&T 20C408
RAMDAC"
(**) Mach64: Monitor ID: "My Monitor"
(--) Mach64: Mode "640x480" needs hsync freq of 43.27 kHz. Deleted.
(--) Mach64: Mode "1152x864" needs hsync freq of 43.92 kHz. Deleted.
(--) Mach64: Mode "800x600" needs hsync freq of 48.08 kHz. Deleted.
(--) Mach64: Mode "1024x768" needs hsync freq of 48.36 kHz. Deleted.
(--) Mach64: Mode "640x480" needs hsync freq of 53.01 kHz. Deleted.
(--) Mach64: Mode "1152x864" needs hsync freq of 53.51 kHz. Deleted.
(--) Mach64: Mode "800x600" needs hsync freq of 55.84 kHz. Deleted.
(--) Mach64: Mode "1024x768" needs hsync freq of 56.48 kHz. Deleted.
(--) Mach64: Mode "1280x1024" needs hsync freq of 51.02 kHz. Deleted.
(--) Mach64: Mode "800x600" needs hsync freq of 64.02 kHz. Deleted.
(--) Mach64: Mode "1024x768" needs hsync freq of 62.50 kHz. Deleted.
(--) Mach64: Mode "1152x864" needs hsync freq of 62.42 kHz. Deleted.
(--) Mach64: Mode "1280x1024" needs hsync freq of 64.25 kHz. Deleted.
(--) Mach64: Mode "1024x768" needs hsync freq of 70.24 kHz. Deleted.
(--) Mach64: Mode "1152x864" needs hsync freq of 70.88 kHz. Deleted.
(--) Mach64: Mode "1280x1024" needs hsync freq of 74.59 kHz. Deleted.
(--) Mach64: Mode "1600x1200" needs hsync freq of 75.00 kHz. Deleted.
(--) Mach64: Mode "1152x864" needs hsync freq of 76.01 kHz. Deleted.
(--) Mach64: Mode "1280x1024" needs hsync freq of 78.86 kHz. Deleted.
(--) Mach64: Mode "1024x768" needs hsync freq of 80.21 kHz. Deleted.
(--) Mach64: Mode "1280x1024" needs hsync freq of 81.13 kHz. Deleted.
(--) Mach64: Mode "1600x1200" needs hsync freq of 87.50 kHz. Deleted.
(--) Mach64: Mode "1152x864" needs hsync freq of 89.62 kHz. Deleted.
(--) Mach64: Mode "1280x1024" needs hsync freq of 91.15 kHz. Deleted.
(--) Mach64: Mode "1600x1200" needs hsync freq of 93.75 kHz. Deleted.
(--) Mach64: Mode "1600x1200" needs hsync freq of 105.77 kHz. Deleted.
(--) Mach64: Mode "1280x1024" needs hsync freq of 107.16 kHz. Deleted.
(--) Mach64: Mode "1800X1440" needs hsync freq of 96.15 kHz. Deleted.
(--) Mach64: Mode "1800X1440" needs hsync freq of 104.52 kHz. Deleted.
(--) Mach64: Mode "320x240" needs hsync freq of 39.38 kHz. Deleted.
(--) Mach64: Mode "400x300" needs hsync freq of 48.08 kHz. Deleted.
(--) Mach64: Mode "480x300" needs hsync freq of 39.56 kHz. Deleted.
(--) Mach64: Mode "480x300" needs hsync freq of 48.00 kHz. Deleted.
(**) FontPath set to
"/usr/X11R6/lib/X11/fonts/misc/,/usr/X11R6/lib/X11/fonts/75dpi/:unscaled,/u
sr/X11R6/lib/X11/fonts/Type1/,/usr/X11R6/lib/X11/fonts/Speedo/,/usr/X11R6/l
ib/X11/fonts/75dpi/"
(--) Mach64: Mach64 GX rev 1, Aperture @ 0x00000000, Sparse I/O @ 0x02ec
(--) Mach64: Card type: ISA
(--) Mach64: Memory type: DRAM (0)
(--) Mach64: Clock type: ATI18818-1/ICS2595
(--) Mach64: Maximum allowed dot-clock: 135.000 MHz
(**) Mach64: Mode "640x480": mode clock =  31.500
(**) Mach64: Mode "800x600": mode clock =  40.000
(**) Mach64: Mode "1024x768": mode clock =  44.900
(--) Mach64: There is no mode definition named "1280x1024"
(--) Mach64: Removing mode "1280x1024" from list of valid modes.
(--) Mach64: Virtual resolution: 1024x768
(--) Mach64: Video RAM: 2048k
(--) Mach64: Using hardware cursor
(--) Mach64: Using 4 MB aperture @ 0x04000000
(--) Mach64: Ramdac is AT&T20C408
(--) Mach64: Ramdac speed: 135 MHz
(--) Mach64: Using 8 bits per RGB value
xinit:  Resource temporarily unavailable (errno 11):  unexpected signal 1^M


waiting for X server to shut down .(--) Mach64: Pixmap cache: 2 256x256
slots, 8 128x128 slots, 32 64x64 slots
(--) Mach64: Font cache: 16 fonts
System: `/usr/X11R6/lib/X11/xkb/xkbcomp -w 1 -R/usr/X11R6/lib/X11/xkb -xkm
-m us -em1 "The XKEYBOARD keymap compiler (xkbcomp) reports:" -emp "> "
-eml "Errors from xkbcomp are not fatal to the X server" keymap/xfree86
compiled/xfree86.xkm'
.........
 ^M
xinit:  X server slow to shut down, sending KILL signal.

waiting for server to die


Repeat By:

XF86 3.3.6
Linux 2.2.5-22smp i686 [ELF], Red Hat Linux 6.2
I had to instal Linux in text format because my video card/monitor? was not
recognized
I tried several times, unsuccessfully, to use the Xserver setup screens
provided with Red Hat linux.
I gave up on that, then
I logged in as root
cd /usr/X11R6
xf86config
After keyboard and mouse info
I entered graphics card info listed above
My monitor is AcerView 34T (14 inches). According to specs received from
manufacturer, resolution (preset mode) is 640x480/60 Hz, 640x400/70 Hz,
640x350/70 Hz, 640x480/72 Hz, 800x600/60 Hz, 800x600/72 Hz, 1024x768/60 Hz,
non-interlaced
Horizontal freq. 31.5/37.8/48.09/48.3 KHz
Vert. freq. 50~100
I selected horiz. 31.5-37.9 and vertical 50-100
I selected the server Mach64
I copied the XF86Config file to /usr/X11R6/lib/X11
startx
Monitor froze and showed regularly spaced vertical lines (pinkish) w. some
heavier "blobs" on some of them.