I configured 3 X HP t5545 thin clients in the workplace some 4 months ago and they were working a treat. They still work well but in the last few days have displayed some consistently strange behavior.
After a period of seemingly between 15-20 minutes of inactivity - the units do not entirely time out - however upon the next keystroke or move of the mouse - disconnect and reconnect quite quickly - and then continue as normal, until the next 15-20 mins of inactivity.
It's almost like they have gone into standby and are coming out of standby upon keys being pressed or mouse movement.
The screen saver etc in the HP thin client config has been disabled from day one, they were flashed with the latest image, all other sleep/power options that I was able to find were indeed disabled. The operating system session they connect to also have screen savers, power options etc disabled.
They have not been touched in 4 months and then this isseu began. Onlyt hing I can perhaps point out is the weekend just passed saw us move to a new domain controller, and the dhcp scope was moved. We've observed no other issues beside this problem with the thin clients.
I hard reset them, only for them to display the same behavior after exactly 15-20 minutes. I've allocated the IPs with reservations in case the IP was being lost - still no fix.
I'm checking everywhere for some hidden option but can't find anything (yes I have checked admin mode on them as well - still nothing).
The guest sessions are XP VMs, they connect back to a server 08 hyper v host. All NICs etc have power saving disabled. The VMs have static IPs etc all configured correctly.
Any help from anyone who has experience with these units or a similar issue would be greatly appreciated.