The only way you could switch your Macbook from VGA to DP1 is by executing a DDM comandline from Bootcamp on the Macbook since DDM is a Windows-only program. When the *active* input is VGA on the E2316H there is no communication channel between DDM running on your gaming PC over DP1. In other words, you can't switch to DP1 over DP1; you can only switch to DP1 over VGA and to VGA over DP1.
If I misunderstood your situation, do the following:
1. Close DDM and switch to VGA
2. Start DDM
3. Execute your DP1 shortcut
4. While holding the SHIFT key down, right-click on the DDM system tray icon and select "Save diagnostic report..."
5. Post the content of the report you saved in step 4
swamped1
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October 25th, 2016 10:00
The only way you could switch your Macbook from VGA to DP1 is by executing a DDM comandline from Bootcamp on the Macbook since DDM is a Windows-only program. When the *active* input is VGA on the E2316H there is no communication channel between DDM running on your gaming PC over DP1. In other words, you can't switch to DP1 over DP1; you can only switch to DP1 over VGA and to VGA over DP1.
If I misunderstood your situation, do the following:
1. Close DDM and switch to VGA
2. Start DDM
3. Execute your DP1 shortcut
4. While holding the SHIFT key down, right-click on the DDM system tray icon and select "Save diagnostic report..."
5. Post the content of the report you saved in step 4