Can't startx: Failed to load module "vga", "vesa", or "ati"

[David Oberlitner]

Hello Xorg list,

I can't startx.

I updated a previously working Gentoo installation to xorg 6.8.0. After 
the upgrade I am not able to load ATI, VESA, or VGA video drivers. The 
attached log file shows an attempt using the vga driver. The VESA and 
ATI drivers yield similar results. The differences are "undefined 
symbol" names and driver.so names.

I looked at the FAQErrorMessages but did not find a solution to my 
problem there.

What can I do to enable loading an appropriate video driver for an ATI 
Rage XL 8MB adapter?

Thank you,

David
---------------------------------------------------
The attached Xorg.0.log file includes the following snippets:

(--) PCI:*(2:0:0) ATI Technologies Inc Rage XL rev 39, Mem @ 
0xfd000000/24, 0xfe9df000/12, I/O @ 0xde00/8, BIOS @ 0xfea00000/17
.
.
LoadModule: "vga"
(II) Loading /usr/X11R6/lib/modules/drivers/vga_drv.so
dlopen: /usr/X11R6/lib/modules/drivers/vga_drv.so: undefined symbol: 
vgaHWUnmapMem
(EE) Failed to load /usr/X11R6/lib/modules/drivers/vga_drv.so
(II) UnloadModule: "vga"
(EE) Failed to load module "vga" (loader failed, 7)
.
.
(EE) No drivers available.

Fatal server error:
no screens found
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