No cursor visible on XTerms after upgrading to Cygwin 2.5.2

[Jon Turney]

On 26/06/2016 19:15, Mark Hansen wrote:
> On 6/26/2016 6:58 AM, Mark Hansen wrote:
>> I'm having a problem since upgrading to Cygwin 2.5.2 yesterday. I
>> was running 2.5.1 previously.
>>
>> When running X applications, the mouse cursor is not visible as I
>> move the mouse over the application window. When moving the mouse
>> across the display, I can see it change to the resize cursor when
>> hitting the edge of the XTerm window, but as soon as it moves
>> inside the application window, it vanishes.
[...]
> After playing with this some, I found the -swcursor option to the
> XServer was causing the problem. If I remove that, then the mouse
> cursor is drawn in the X clients as expected.
>
> I don't remember why I was using this option (I got the startup
> options too long ago to remember) but in looking for information on
> this option, there's not much in the way of an explanation.
>
> So, I think the -swcursor option is broken as of 2.5.2, but do I
> need it? I'm guessing I don't and so I'm going without it for now.

Thanks for reporting this issue.

This is actually caused by a recent change in the xserver 1.18.3-1 
package [1], where -compositewm was made the default.

-swcursor is not compatible with -compositewm (because the window 
contents are drawn from an off-screen pixmap, not from the screen 
pixmap, where the software cursor will be drawn).

I'll update the man page to note this and look at ignoring or rejecting 
-swcursor when -compositewm is enabled.

I don't know why anyone would need to use -swcursor.

[1] https://cygwin.com/ml/cygwin-announce/2016-06/msg00045.html

-- 
Jon Turney
Volunteer Cygwin/X X Server maintainer

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