It can be especially convenient if the projector and laptop are not located close to each other or if there is a need to move around the room while presenting. While most projectors come with a wired connection option, connecting a laptop to a projector wirelessly is possible. That will greatly improve the issue, if not remove it altogether.In today’s digital age, it is common to use a projector to display content from a laptop during presentations, meetings, and events. In case of a laptop with hybrid graphics (NVidia + Intel HD graphics) disable the "Hybrid" or "Auto" mode in the Bios and set it to "Discrete".(Please note: Windows defaults to Balanced and, after installing WindowsUpdates Microsoft has the nasty habit of switching back to Balanced, regardless of what was previously selected.) With power-savings set to "balanced" or "maximum power-save" it happens all the time. I know that will drain the battery quicker, but we see the problem almost never in that mode. Make sure the power-saving mode is set to "High Performance".Don't forget to update the display-drivers too. If possible update the BIOS and/or the motherboard firmware.We've got lot's of these laptops at the office and found the following: (Many newer, especially 4K models, want 1024x768 or 1600x900 as a minimum resolution.) The displays go to 640x480 or they go completely dark if the monitor doesn't support that resolution. It seems more related to the Intel HD graphics in these laptops than to the brand of the laptop. Similar issues have also been observed with HP zBook 15 and 17 and the Fujitsu Celsius H760, H770 and H780. (DisplayPort and HDMI attached monitors may show the same behavior.) The T470, T480, T570 and T580 all seem to have issues with additional displays and sleep mode.
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