Re: XServer draws to incorrect window when using VirtuaWin

[Pete <sneakypete81@gmail.com>]

On 13 August 2010 11:38, Pete <sneakypete81@gmail.com> wrote:
> VirtuaWin (http://virtuawin.sourceforge.net/) is a virtual desktop
> manager for Windows that lets you switch between several "virtual
> desktops", similar to those provided in KDE & Gnome.
>
> When switching between desktops that have CygwinX windows open,
> occasionally the Xserver draws to the wrong window. This is difficult
> to describe, so will continue with an example:
>
> Using Windows 7, Cygwin/X v1.8.0
>
> Steps to reproduce:
> 1) Install VirtuaWin from http://virtuawin.sourceforge.net/
> 2) Start the CygwinX server
> 3) Open a (DOS) cygwin window
> 4) Type "xterm &" twice, to open two xterm windows. Maximise these two
> windows to full screen.
> 5) Move one of these windows to desktop2
> 6) Type "ping google.com -n 1000" to get a stream of data appearing in
> the xterm window on desktop2
> 7) Go back to desktop1, and make sure the DOS cygwin window is selected
> 8) Switch back to desktop2. The "ping" xterm window should be selected.
> 9) Switch back to desktop1. The cygwin window should be selected.
>
> What should happen:
> The empty xterm session on desktop1 should be displayed in the window
> behind the cygwin window
>
> What happens:
> The ping data stream appears in the xterm window on desktop1, and
> continues receiving updates every second.
> Selecting the xterm window causes the ping data to disappear and the
> empty xterm session to be displayed correctly.
>
> This is reproducible every time. The critical thing is that if the
> xterm window on desktop1 is not selected after a desktop switch, it
> shows the data from the xterm window on desktop 2.
>
> FWIW, this problem doesn't exist with xming, and I haven't seen the
> issue with any other applications.
>
> Any questions, please let me know.
> Thanks,
> Pete
>

Is there anything else I can do to help debug this? Unfortunately it
is necessary to install VirtuaWin to reproduce the issue, but it's
very reproducible.

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