Problem losing mouse pointer visibility

[Damien Cymbal]

I am looking for any ideas on how to either resolve or debug this problem to 
the next level.  I am currently using 6.8.99.901-4 of XWin, although I have 
had the following problem through several cygwin updates now.

I am using XWin to start an XDMCP session to an Ubuntu box running a GNOME 
desktop via gdm.  The current version of Ubuntu is 7.04 although I have had 
this problem going against 6.10 and 6.06 as well.

Everything runs fine for me for some intermittent amount of time and then I 
inevitably wind up losing the visibility of the mouse pointer in the X 
server.  Sometimes I can run for 2 days, sometimes only for 2 hours.  I have 
not been able to find a pattern of when this happens.  The mouse if still 
"functional" in that you can move around and click, you just can't see where 
you are because it's invisible.  This is only when the pointer is in the X 
window, it I bring the mouse outside of X and back onto the window's desktop 
or other window's application it reappears.  Moving back over the X window 
causes it to disappear again.  If I kill the X server and restart it, things 
will come up fine and work again for some random time before the problem 
happens again.

If I ALT-F4 to kill the X server, I notice that the "Exiting will close all 
screens running on this display..." dialog that pops up also refuses to show 
the pointer, so it is as if there is some weird hide/show bug effecting the 
XWin process.

Here are some system details.  Please let me know if there is anything I can 
try or any other data I can provide.

Thank You.

I start the X server using the command: XWin :0 -kb -clipboard -query 
hostname

cygcheck -c:

X-start-menu-icons   1.0.4-1            OK
X-startup-scripts    1.0.11-1           OK
Xaw3d                1.5D-5             OK
XFree86-lib-compat   4.3.0-2            OK
xorg-x11-base        6.8.99.901-1       OK
xorg-x11-bin         6.8.99.901-1       OK
xorg-x11-bin-dlls    6.8.99.901-1       OK
xorg-x11-bin-lndir   6.8.99.901-1       OK
xorg-x11-etc         6.8.99.901-1       OK
xorg-x11-fenc        6.8.99.901-1       OK
xorg-x11-fnts        6.8.99.901-1       OK
xorg-x11-libs-data   6.8.99.901-1       OK
xorg-x11-xwin        6.8.99.901-1       OK
xwinclip             1.2.0-1            OK

$ XWin --version
Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 6.8.99.901-4

------------------
System Information
------------------
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2  
(2600.xpsp_sp2_gdr.070227-2254)
Language: English (Regional Setting: English)
System Manufacturer: Dell Computer Corporation
System Model: Precision WorkStation 360
BIOS: Phoenix ROM BIOS PLUS Version 1.10 A04
Processor: Intel(R) Pentium(R) 4 CPU 2.60GHz (2 CPUs)
Memory: 1022MB RAM
DirectX Version: DirectX 9.0c (4.09.0000.0904)

---------------
Display Devices
---------------
Card name: NVIDIA Quadro NVS with AGP8X
Manufacturer: NVIDIA
Chip type: Quadro NVS with AGP8X
DAC type: Integrated RAMDAC
Display Memory: 64.0 MB
Current Mode: 1600 x 1200 (32 bit) (60Hz)
Driver Name: nv4_disp.dll
Driver Version: 6.14.0010.5216 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Video Accel: ModeMPEG2_A ModeMPEG2_B ModeMPEG2_C ModeMPEG2_D

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