xorg.conf strange behavior after updating xserver

[Chris Pemberton]

Hello,

Intel 945GM

To get the latest intel driver, I updated the following via git yesterday:

pixman
drm
xf86-video-intel
mesa
xserver

Tried to startx X and it failed complainig about keyboard and mouse.  So 
I updated the following via git:

xf86-input-keyboard
xf86-input-mouse

Now X loads and both integrated and external USB keyboards work, but 
neither trackpad or USB mouse work.  So I disabled my synaptics entry in 
my xorg.conf, fired X back up, but still no trackpad or USB mouse.

Finally I removed all xorg.conf files and let the intel driver figure 
everything out... and every thing worked!  Trackpad, USB mouse, 
integrated and USB keyboards and display are all working.  Thank you.

Unfortunately, now I get a glx errors in the logs:

(EE) Unable to locate/open config file
(EE) Failed to load /usr/lib/xorg/modules/extensions//libglx.so
(EE) Failed to load module "glx" (loader failed, 7)
(EE) module ABI major version (1) doesn't match the server's version (2)
(EE) Failed to load module "fbdev" (module requirement mismatch, 0)
(EE) module ABI major version (1) doesn't match the server's version (2)
(EE) Failed to load module "vesa" (module requirement mismatch, 0)
(EE) module ABI major version (1) doesn't match the server's version (2)
(EE) Failed to load module "vga" (module requirement mismatch, 0)
(EE) intel(0): [dri] I830CheckDRIAvailable failed: glx not loaded
(EE) intel(0): Non-contiguous GTT entries: (6295552,0x167ffbe000) vs 
(131072,0x        7f820000)

Here is the output of glxinfo:

glxinfo
name of display: :0.0
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual
   visual  x  bf lv rg d st colorbuffer ax dp st accumbuffer  ms  cav
 id dep cl sp sz l  ci b ro  r  g  b  a bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
0x21 24 tc  1  0  0 c  .  .  0  0  0  0  0  0  0  0  0  0  0  0 0 None
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
0x22 24 dc  1  0  0 c  .  .  0  0  0  0  0  0  0  0  0  0  0  0 0 None
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
0x55 32 tc  1  0  0 c  .  .  0  0  0  0  0  0  0  0  0  0  0  0 0 None

So I have a series of questions:

1.  Do I no longer need a synaptics driver?
2.  What could be causing the new glx errors?
3.  Why would an xorg.conf from 3 days ago not work with these updates?

Thanks,

Chris