Still can't run XServer or any apps that require it

["David M. Karr" <davidmichaelkarr@gmail.com>]

Cygwin 1.7.9 on Win7SP1.

Almost a week ago now, I've been unable to run my XServer, and thus any 
of the apps that normally run with it, like Emacs.  When I run 
"startxwin", it just says "failed to activate core devices".

Here's the XWin.0.log:
--------------------------------
Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.10.1.0
OS: Windows 7 Service Pack 1 [Windows NT 6.1 build 7601] (Win32)
Package: version 1.10.1-1 built 2011-04-22

XWin was started with the following command line:

X :0 -multiwindow

ddxProcessArgument - Initializing default screens
winInitializeScreenDefaults - primary monitor w 1920 h 1080
winInitializeDefaultScreens - native DPI x 96 y 96
[498341.590] (II) xorg.conf is not supported
[498341.590] (II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html for 
more information
[498341.590] LoadPreferences: /home/David/.XWinrc not found
[498341.590] LoadPreferences: Loading /etc/X11/system.XWinrc
[498341.605] LoadPreferences: Done parsing the configuration file...
[498341.652] winDetectSupportedEngines - DirectDraw installed, allowing 
ShadowDD
[498341.652] winDetectSupportedEngines - Windows NT, allowing PrimaryDD
[498341.652] winDetectSupportedEngines - DirectDraw4 installed, allowing 
ShadowDDNL
[498341.730] winDetectSupportedEngines - Returning, supported engines 
0000001f
[498341.730] winSetEngine - Multi Window or Rootless => ShadowGDI
[498341.730] winScreenInit - Using Windows display depth of 32 bits per 
pixel
[498341.746] winAllocateFBShadowGDI - Creating DIB with width: 1920 
height: 1080 depth: 32
[498341.746] winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff
[498341.746] winInitVisualsShadowGDI - Masks 00ff0000 0000ff00 000000ff 
BPRGB 8 d 24 bpp 32
[498341.746] winInitMultiWindowWM - Calling pthread_mutex_lock ()
[498341.761] Screen 0 added at virtual desktop coordinate (0,0).
[498341.761] winMultiWindowXMsgProc - Calling pthread_mutex_lock ()
[498341.761] MIT-SHM extension disabled due to lack of kernel support
[498341.761] XFree86-Bigfont extension local-client optimization 
disabled due to lack of shared memory support in the kernel
[498341.808] (II) AIGLX: Loaded and initialized /usr/lib/dri/swrast_dri.so
[498341.808] (II) GLX: Initialized DRISWRAST GL provider for screen 0
[498341.808] [dix] Could not init font path element 
/usr/share/fonts/OTF/, removing from list!
[498341.808] [dix] Could not init font path element 
/usr/share/fonts/Type1/, removing from list!
[498341.949] (EE) XKB: Could not invoke xkbcomp
[498341.949] (EE) XKB: Couldn't compile keymap
[498341.949] (EE) XKB: Failed to load keymap. Loading default keymap 
instead.
[498342.089] (EE) XKB: Could not invoke xkbcomp
[498342.089] (EE) XKB: Couldn't compile keymap
[498342.089] XKB: Failed to compile keymap
[498342.089] Keyboard initialization failed. This could be a missing or 
incorrect setup of xkeyboard-config.
[498342.089]
Fatal server error:
[498342.089] Failed to activate core devices.
------------------------------

I looked in the FAQ for the entry corresponding to this error, but none 
of the steps found any issues.  I've tried doing "rebaseall" according 
to the instructions, but that hasn't made any difference.  In fact, my 
problems started when I ran "rebaseall" to fix a different problem.  I 
was getting "Doing vfork: resource temporarily unavailable" when I 
started up Emacs, and some advice I found suggested running "rebaseall".

I've run "cygcheck -c" and got all OK.  I ran "cygcheck -s" and the only 
part that seemed vaguely suspicious was this excerpt:

    12k 2010/08/03 C:\/usr/bin/cygrunsrv: warning: OpenService failed 
for 'DcomLaunch': Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'pla': Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'QWAVE': Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'RpcEptMapper': 
Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'RpcSs': Win32 error 5
Access is denied.
cygwin\bin\cygXcomposite-1.dll


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