X session turns white after display is turned back on

[Natarajan Murugaiyan <vasanthappa at gmail dot com>]

I am using cygwin on a Dell windows 7 laptop, running X windows
through startx command with fvwm2 window manager.

The laptop display gets turned off after a period of inactivity. When
I log back in, the X
session and all clients inside  it are white. I have no problems with
the X session prior
to when display got turned off.


tail of /var/log/Xwin/XWin.0.log:
    [ 19432.919] winClipboardProc - XOpenDisplay () returned and
successfully opened the display.
    [ 19506.037] winWindowProc - WM_DISPLAYCHANGE - new width: 0 new
height: 0 new bpp: 0
    [ 19603.148] winWindowProc - WM_DISPLAYCHANGE - new width: 0 new
height: 0 new bpp: 0
    [ 19682.599] winWindowProc - WM_DISPLAYCHANGE - new width: 0 new
height: 0 new bpp: 0
    [ 19682.599] winCreatePrimarySurfaceShadowDDNL - Could not create
primary surface: 8876024e

Ran cygwin setup to update laptop to latest version of cygwin. Problem
is present after cygwin update.
Versions of X11 related packages:
  fvwm                            2.5.21-1
  xfig                            3.2.5b-2
  xfig-lib                        3.2.5b-2
  xorg-cf-files                   1.0.3-1
  xorg-docs                       1.5-1
  xorg-scripts                    1.0.1-1
  xorg-server                     1.9.4-1
  xorg-server-dmx                 1.9.4-1
  xorg-sgml-doctools              1.5-1
  xorg-util-macros                1.10.0-1
  xorg-x11-bin-dlls               7.4-1

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