Re: pkg/53718 (xfwm4 does not allow positioning of windows any more)

[coypu%sdf.org@localhost]

The following reply was made to PR pkg/53718; it has been noted by GNATS.

From: coypu%sdf.org@localhost
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: pkg/53718 (xfwm4 does not allow positioning of windows any more)
Date: Tue, 8 Jan 2019 11:52:08 +0000

 Hi,
 
 can someone with the problem send the following:
 
 - Output of 'glxinfo'
 - config.log for xfce4-wm, (does it have HAVE_PRESENT_EXTENSION)
 Or,
 - output of `xfwm4 --version`
 
 
 Going by a diff,
 
 
 +4.3) VSYNC and tearing
 +======================
 +
 +Starting with version 4.13, xfwm4 now supports VSYNC via two different
 +method, either using OpenGL or the Present X11 extension.
 +
 +xfwm4 relies on libepoxy for OpenGL, and on libXpresent for Present support.
 +
 +Support for those features can be checked using "xfwm4 --version":
 +
 +	Build configuration and supported features:
 +        ...
 +	- Xpresent support:                             Yes
 +	- Embedded compositor:                          Yes
 +	- Epoxy support:                                Yes
 +        ...
 +
 +If both VSYNC methods are available, xfwm4 will prefer Present over OpenGL.
 
 I can imagine a scenario where it waits for a vblank to update the
 changed windows but it never comes.
 
 It would be nice if someone is adventurous, to force disable xpresent.
 Add
 CONFIGURE_ARGS+=--disable-xpresent
 to xfce4-wm Makefile, make replace.
 
 Thanks.