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Connecting Three DVI Monitors to UD7 with Passive DisplayPort Adapters

Problem

When three DVI monitors are connected to a UD7 thin client over passive DisplayPort adapters, only one or two monitors are detected.

Solution

This solution is only persistent if energy saving is switched off.

  1. Open the thin client's Setup.

  2. Go to System > Registry > x > xserver0 > force_reconfig (Registry key: x.xserver0.force_reconfig) and set the value to never. 

  3. Click Ok to save the setting and close the Setup.

  4. Restart the device.
    All three monitors should be detected.