This is on a server 2019 Standard install. Multiple HP mfps, color and mono.
HP E87650 and E52645. Running the latest firmware 5.5. Tested using the latest HP V4 drivers to try to duplicate the issue on windows 10 desktops.
Testing Duplex as Installed and Not installed in the device settings on the driver, I am not testing duplex settings as a print preference.
When the V4 driver is installed on the server, all device settings are set as enabled/installed or disabled/not installed. I have duplex installed and enabled on both these printers on the print server driver. I connect and add the printer queue from the print server to the test pc. Everything prints fine, 1S, 2S from office/chrome/edge etc. Duplex is enabled and works fine.
But sometimes (not every-time). When the printer is power cycled or rebooted. The driver on the server has the duplex setting in device settings flip from installed to not installed and users complain they can;t duplex anymore since the print server driver has set duplex to not installed. The driver doesn't have it set as auto detect or auto config, only as installed or not installed.
Has anyone else had a similar issue and a resolution to this problem?
I looked at using the HP PARK util to lock down settings but it doesn't apply or work on V4 drivers, only their UPD drivers... But that setting should not be changing on the server anyway. What is causing it to change settings and usually tied to a printer power cycle which I did duplicate twice.