Is a caRepeater bug was introduced starting from Epics 3.14.12?

It is intermittent, and may occur when "Related Display" button on an medm screen is pressed.

We were able to reproduce "Virtual circuit disconnect" message (see below) with Epics 3.14.12, Epics 3.14.12.1, and Epics 3.14.12.2 but not with Epics 3.14.11.

Other observations:

1) Workstations with Epics 3.14.11 do not experience such "Virtual circuit disconnect" problem with the same IOC, so this bug is likely on a client side.

2) MEDM build with Epics 3.14.12.2 does not experience such "Virtual circuit disconnect" problem while running on a workstation with Epics 3.14.11 installed.

Is this bug in the caRepeater code?

Any suggestions?

Regards,

Oleg Makarov

Mon Feb 06 18:19:30 CST 2012

medmCAExceptionHandlerCb: Channel Access Exception:

Channel Name: Unavailable

Native Type: Unavailable

Native Count: 0

Access: Unavailable

IOC: Unavailable

Message: Virtual circuit disconnect

Context: bl3ioc1.gmca.aps.anl.gov:5064

Requested Type: TYPENOTCONN

Requested Count: 0

Source File: ../cac.cpp

Line number: 1214