Reproducing the cygwin X clipboard problems

[Jon TURNEY]

Jon TURNEY wrote:
> Thanks very much for this information on the clipboard problems.  I've 
> been able to reproduce something similar to the problems you describe, 
> so I will spend some time trying to fix it.

I've looked into this a bit and it seems to me that the patch in [1] can 
interact badly with other clipboard viewer applications (like clipbrd.exe, VNC 
viewer, and probably other clipboard helper applications and maybe VMs as well)

On my PC, just running the tightvnc viewer and X server and copying something 
into the X clipboard sends the CPU load to 100% as we seem to be constantly 
converting the selection onto the windows clipboard and then clearing it.

I've built a version of 1.5.3-7, with this patch reverted and lots more 
clipboard debugging added.  You can download it from [2]

It would be most helpful if you could try this and see if the clipboard 
problems you are seeing are changed at all.

If the problems still persist, could you please run the X server with the 
extra parameter '-logverbose 3' and post a relevant section from the log 
output along with a description of the behaviour.  (Note that running with 
this level of logging will make your log file get very big quite quickly and 
probably slow down the X server)

[1] http://bugs.freedesktop.org/show_bug.cgi?id=5735
[2] ftp://cygwin.com/pub/cygwinx/XWin.20090225214130.exe.bz2

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