Re: Focus deadlock

[<nick.rees@diamond.ac.uk>]

This sounds really wierd. Is it possible you are running out of resources somewhere? The other wild idea is that Aravis uses some of the Gnome libraries and so if you are running a GigE camera with the Aravis driver, maybe there is an unexpected feature of the Gnome libraries...

Cheers,

Nick Rees
Principal Software Engineer           Phone: +44 (0)1235-778430
Diamond Light Source                  Fax:   +44 (0)1235-446713


-------- Original message --------
From: Mark Rivers
Date:23/10/2014 20:40 (GMT+01:00)
To: "Specht, Eliot D." ,tech-talk@aps.anl.gov
Subject: RE: Focus deadlock

When you say "areaDetector IOC running in the background" what exactly do you mean?  Do you have an areaDetector viewer of some sort running, and if so which one?  Is the focus switching between that display and one of your application's windows, or between 2 of your application's windows?

I have never heard of such a problem.

Mark

________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of Specht, Eliot D. [spechted@ornl.gov]
Sent: Thursday, October 23, 2014 1:15 PM
To: tech-talk@aps.anl.gov
Subject: Focus deadlock

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




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