EDM screens not updating on Linux

[Brian Bevins <bevins@jlab.org>]

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

--
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