Experimental Physics and
Industrial Control System

I have seen a similar behaviour in EDM.  The most recent was: EDM was
running and was displaying correctly data from an IOC.  I restarted
the IOC, the EDM displays went white, as they should, but never
showed that the EDM reconnected untill I placed it in edit then
immediately in execute mode.  It was not the IOC because for a few
minutes I was monitoring one of the PV's with a caget; the IOC was
publishing its data on the CA long before (minutes) I made EDM
recover.  I am using edm version 1-11-0zb running on RHEL4. Zen

-----Original Message----- From: [email protected]
[mailto:[email protected]] On Behalf Of Dirk Zimoch Sent: Thursday, November 08, 2007 1:05 AM To: Brian Bevins Cc: EPICS
Techtalk Subject: Re: EDM screens not updating on Linux

Hi Brian,

we have seen the same effect with MEDM. I suspect a problem with
either the X-server or the motif library. It is very strange that the
effect appears only on some computers.

It seems that the screens don't get update requests when new values
arrive. Minimizing and maximizing, or just "wiping" the screen with
some other window generates the update events and the current value
is shown. From this I conclude that there is no problem in EPICS and
the monitor events correctly arrive. The values are just not updated
on the screen. Can you verify this with EDM?

Dirk

Brian Bevins wrote:

We are in the process of converting our control room machines from
 HP-UX 11.11 to RedHat Enterprise Linux (rhel) 4WS. Most things
seem to be working fine, but an odd problem has cropped up with EDM
that we did not have on HP-UX.

Every now and then an EDM display will simply stop showing any
updates to the PV's. Closing and re-opening the display gets it
working again. Writes from the screen to the ioc's seem to work
normally.

Has anybody else experienced a problem like this?

We are using EDM 1-10-2 on rhel 4WS (Nahant Update 5). This is the
 same version we have bee using on HP-UX with no problems.

Our operators love how zippy EDM runs on their new Linux boxes compared to the ancient HP hardware, but this is really denting
their enthusiasm.

Thanks, --Brian

-- Dr. Dirk Zimoch Paul Scherrer Institut, WBGB/006 5232 Villigen
PSI, Switzerland Phone +41 56 310 5182

--
Brian S. Bevins, PE
Computer Scientist / Mechanical Engineer
Thomas Jefferson National Accelerator Facility

     "Progress, far from consisting in change,
      depends on retentiveness. Those who cannot
      remember the past are condemned to repeat it."
                                         -- George Santayana

Replies:

RE: EDM screens did not reconnect Jeff Hill

References:

EDM screens not updating on Linux Brian Bevins

Re: EDM screens not updating on Linux Dirk Zimoch

RE: EDM screens not updating on Linux Szalata, Zenon M.

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