Elite Display E222 Blinking Issue

[RIchardM1966]

Recently, our team updated our hardware from a standard PC to a laptop/docking station for each of our users.  Each docking station is connected to two EliteDisplay E222 via DisplayPort cable.  Prior to the refresh, the monitors worked perfectly and there were no display issues.  However, now that they are connected to the docking station, they will randomly blink, lasting for a few seconds.  Windows does not seem to notice since none of the desktop items move to the other screen as if the hardware is no longer being recognizes.  Nor do the monitors blink at the same time and it does not seem to happen on a regular interval.

I have already tried the latest drivers, replaced the docking station, turned down the brightness from 90% to 80% and turned off Auto-Sleep Mode.

Current hardware is:

Elitebook 840 G3

2013 Ultraslim Docking Station

EliteDisplay E222

2 Displayport cables (HP issued with unrelated PC hardware)

I have yet to try replacement DisplayPort cables since both monitors had no issus when in use while connected to the PC (for almost a month).

I have also not tried a third docking station.

Thank you for your assistance.

[RIchardM1966 · Accepted solution]

Here is the official response.  I have not yet had an opportunity to see if it works:

**************

With reference to our last interaction regarding display flickering issue with HP EliteBook 840 G3 Notebook PC.

Please update the bios from the below link:

http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=7815295&swItemId=ob_178204_1&swEnvOid=419...

After update the BIOS, please install HP softpaq and update all the drivers on the unit, please update all the drivers using hp softpaq.

https://ftp.hp.com/pub/caps-softpaq/HP_SDM_Setup.exe

Also, update the docking station firmware from the below link:

http://h20564.www2.hp.com/hpsc/swd/public/readIndex?sp4ts.oid=7815295&swLangOid=8&swEnvOid=4192