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- Projector showing "no signal" when connected via HDMI

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01-23-2018 06:31 AM
Product: HP ProBook 450 G5 Notebook PC
Operating System: Microsoft Windows 10 (64-bit)
When connecting the notebook via HDMI cable to Panasonic PT-VZ575N the projector shows "no signal". The HDMI cable is 1m long. The following things have already been figured out and tested:
- when laptop is connected to the projector it detects it as another display, but the picture doesn't transmit
- when laptop is connected to external USB-C dock and the projector is connected with dock HDMI port everything works
- when laptop is connected to an EliteDisplay E242 with the same hdmi cable it works
- when a different laptop (Lenovo) is connected to the projector with the same cable it also works
- the error occurs on all 10 of 450G5 notebooks
- when laptop is connected to the projector via VGA it works
The notebook in question has discrete Nvidia GeForce 930MX graphics card with Nvidia Optimus technology.

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