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<== Date ==> <== Thread ==>

Subject: Re: Focus deadlock
From: "Jennings, Guy" <jennings@aps.anl.gov>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Fri, 24 Oct 2014 16:10:26 +0000
Doesn’t the common factor seem to be motif?

> On Oct 24, 2014, at 9:50 AM, Specht, Eliot D. <spechted@ornl.gov> wrote:
> 
> Pete,
>  
> Can you help me to make a well-posed question for the Winteracter developer? What kind of events are created by the EPICS system which could be picked up by an application which is not EPICS-aware? That is, how would you describe a CA monitor event to a developer who is unfamiliar with EPICS?
>  
> Eliot Specht
>  
> Subject:               Re: Focus deadlock
> From:    Pete Jemian <jemian@anl.gov>
> To:          <tech-talk@aps.anl.gov>
> Date:     Fri, 24 Oct 2014 07:50:49 -0500
> Can this be a an issue where the GUI is receiving CA monitor events directly and focusing the associated window with each event? If so, can you throttle widget updates in Winteracter to a fixed interval rather than updating the GUI for each CA monitor event received?
>  
> On 10/24/2014 7:36 AM, Specht, Eliot D. wrote:
> I’m seeing a conflict between:
>  
> “medm pilatusDetector.adl” and a Winteracter program.  Winteracter
> creates GUIs for Fortran programs using Motif. The Winteracter program
> is simply waiting for input while the problem occurs. The result is that
> input focus shifts rapidly between two Winteracter windows. The medm
> windows do not get input focus, so it’s hard to understand how medm
> contributes to the problem.
>  
> Subject:               Re: Focus deadlock
>  
> From:    Pete Jemian <jemian@anl.gov>
>  
> To:          <tech-talk@aps.anl.gov>
>  
> Date:     Thu, 23 Oct 2014 13:26:17 -0500
>  
> What are the GUI applications involved?
>  
> On 10/23/2014 1:15 PM, Specht, Eliot D. wrote:
>  
> I’m running an application on a Linux x86_64 machine which opens several
>  
> windows for user input and data display. It runs fine unless I have an
>  
> EPICS areadetector IOC running in the background, in which case I get a
>  
> “focus deadlock”, where focus shifts rapidly between two application
>  
> windows and the screen becomes unresponsive to keyboard or mouse input.
>  
> The problem occurs under Gnome but not KDE. Running KDE is an effective
>  
> fix, but it would be nice to get to the bottom of the problem. Can
>  
> anyone suggest what’s going on?
>  
> Eliot Specht                        Voice: (865)574-7682
>  
> Oak Ridge National Laboratory       FAX:   (865)574-4913
>  
> P.O. Box 2008, MS 6064
>  
> Oak Ridge, TN 37831-6064
>  
> Eliot Specht                        Voice: (865)574-7682
>  
> Oak Ridge National Laboratory       FAX:   (865)574-4913
>  
> P.O. Box 2008, MS 6064
>  
> Oak Ridge, TN 37831-6064
>  
>  
> --
> ----------------------------------------------------------
> Pete R. Jemian, Ph.D.                <jemian@anl.gov>
> Beam line Controls and Data Acquisition, Group Leader
> Advanced Photon Source,   Argonne National Laboratory
> Argonne, IL  60439                   630 - 252 - 3189
> -----------------------------------------------------------
>    Education is the one thing for which people
>       are willing to pay yet not receive.
> -----------------------------------------------------------
>  
> Eliot Specht                        Voice: (865)574-7682
> Oak Ridge National Laboratory       FAX:   (865)574-4913
> P.O. Box 2008, MS 6064
> Oak Ridge, TN 37831-6064
>  
>  



Replies:
RE: Focus deadlock Mark Rivers
References:
Re: Focus deadlock Specht, Eliot D.

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