screen not updated outside 1680x1050

[FrÃdÃric Bron <frederic dot bron at m4x dot org>]

My screen resolution is 1920x1200.
The X windows are badly updated (sometimes yes, most of the time no)
outside the top-left area 1680x1050.
My problems are seen with xterm, gv, gvim, rxvt-x... so I think comes
from X.org.
To produce the problem: start an X windows program, then move the
window to the right and go back to the left. For gvim, it is
particularly annoying when maximizing the window.

However /var/log/XWin.0.log says it read the good screen dimensions:

Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.7.1.0 (10701000)
Build Date: 2009-11-11

Contact: cygwin-xfree@cygwin.com

XWin was started with the following command line:

XWin -multiwindow -clipboard -silent-dup-error

ddxProcessArgument - Initializing default screens
winInitializeDefaultScreens - w 1680 h 1050
winInitializeDefaultScreens - Returning
2009-12-17 13:37:31 _XSERVTransSocketOpenCOTSServer: Unable to open
socket for inet6
2009-12-17 13:37:31 _XSERVTransOpen: transport open failed for
inet6/VOR-CRV-01660:0
2009-12-17 13:37:31 _XSERVTransMakeAllCOTSServerListeners: failed to
open listener for inet6
2009-12-17 13:37:35 winValidateArgs - g_iNumScreens: 1 iMaxConsecutiveScreen: 1
2009-12-17 13:37:35 (II) xorg.conf is not supported
2009-12-17 13:37:35 (II) See
http://x.cygwin.com/docs/faq/cygwin-x-faq.html for more information
2009-12-17 13:37:35 winPrefsLoadPreferences: /cygdrive/d/Documents/.XWinrc
2009-12-17 13:37:35 winGetDisplay: DISPLAY=:0.0
2009-12-17 13:37:37 winDetectSupportedEngines - Windows NT/2000/XP
2009-12-17 13:37:37 winDetectSupportedEngines - DirectDraw installed
2009-12-17 13:37:37 winDetectSupportedEngines - DirectDraw4 installed
2009-12-17 13:37:37 winDetectSupportedEngines - Returning, supported
engines 00000007
2009-12-17 13:37:37 winSetEngine - Multi Window or Rootless => ShadowGDI
2009-12-17 13:37:37 winAdjustVideoModeShadowGDI - Using Windows
display depth of 32 bits per pixel
2009-12-17 13:37:38 winAllocateFBShadowGDI - Creating DIB with width:
1680 height: 1050 depth: 32
2009-12-17 13:37:38 winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff
2009-12-17 13:37:38 winInitVisualsShadowGDI - Masks 00ff0000 0000ff00
000000ff BPRGB 8 d 24 bpp 32
2009-12-17 13:37:38 null screen fn ReparentWindow
2009-12-17 13:37:38 null screen fn RestackWindow
2009-12-17 13:37:38 InitQueue - Calling pthread_mutex_init
2009-12-17 13:37:38 InitQueue - pthread_mutex_init returned
2009-12-17 13:37:38 InitQueue - Calling pthread_cond_init
2009-12-17 13:37:38 InitQueue - pthread_cond_init returned
2009-12-17 13:37:38 winInitMultiWindowWM - Hello
2009-12-17 13:37:38 winInitMultiWindowWM - Calling pthread_mutex_lock ()
2009-12-17 13:37:38 Screen 0 added at XINERAMA coordinate (0,0).
2009-12-17 13:37:38 winMultiWindowXMsgProc - Hello
2009-12-17 13:37:38 winMultiWindowXMsgProc - Calling pthread_mutex_lock ()
2009-12-17 13:37:38 MIT-SHM extension disabled due to lack of kernel support
2009-12-17 13:37:38 XFree86-Bigfont extension local-client
optimization disabled due to lack of shared memory support in the
kernel
2009-12-17 13:37:39 (II) AIGLX: Loaded and initialized
/usr/lib/dri/swrast_dri.so
2009-12-17 13:37:39 (II) GLX: Initialized DRISWRAST GL provider for screen 0
2009-12-17 13:37:55 winPointerWarpCursor - Discarding first warp: 840 525
2009-12-17 13:37:55 (--) 3 mouse buttons found
2009-12-17 13:37:55 (--) Setting autorepeat to delay=500, rate=31
2009-12-17 13:37:55 (--) winConfigKeyboard - Layout: "0000040C" (0000040c)
2009-12-17 13:37:55 (--) Using preset keyboard for "French (Standard)"
(40c), type "4"
2009-12-17 13:37:55 Rules = "base" Model = "pc105" Layout = "fr"
Variant = "none" Options = "none"
2009-12-17 13:38:00 winInitMultiWindowWM - pthread_mutex_lock () returned.
2009-12-17 13:38:00 winInitMultiWindowWM - pthread_mutex_unlock () returned.
2009-12-17 13:38:00 winMultiWindowXMsgProc - pthread_mutex_lock () returned.
2009-12-17 13:38:00 winGetDisplay: DISPLAY=:0.0
2009-12-17 13:38:00 winMultiWindowXMsgProc - pthread_mutex_unlock () returned.
2009-12-17 13:38:00 winInitMultiWindowWM - DISPLAY=:0.0
2009-12-17 13:38:00 winGetDisplay: DISPLAY=:0.0
2009-12-17 13:38:00 winMultiWindowXMsgProc - DISPLAY=:0.0
2009-12-17 13:38:00 winProcEstablishConnection - Hello
2009-12-17 13:38:00 winInitClipboard ()
2009-12-17 13:38:00 winClipboardProc - Hello
2009-12-17 13:38:00 winProcEstablishConnection - winInitClipboard returned.
2009-12-17 13:38:00 DetectUnicodeSupport - Windows NT/2000/XP
2009-12-17 13:38:00 winInitMultiWindowWM - XOpenDisplay () returned
and successfully opened the display.
2009-12-17 13:38:00 winMultiWindowXMsgProc - XOpenDisplay () returned
and successfully opened the display.
2009-12-17 13:38:01 winGetDisplay: DISPLAY=:0.0
2009-12-17 13:38:01 winClipboardProc - DISPLAY=:0.0
2009-12-17 13:38:02 winClipboardProc - XOpenDisplay () returned and
successfully opened the display.
2009-12-17 13:47:46 winWindowProc - WM_DISPLAYCHANGE - orig bpp: 32,
last bpp: 32, new bpp: 32
2009-12-17 13:47:46 winWindowProc - WM_DISPLAYCHANGE - new width: 1920
new height: 1200

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