We have a similar problem. We use an HDMI-connected Optoma projector. There are 1 or more single-pixel horizontal lines of white on the projected image with some visiting Dell and other laptops, sometimes flickering. Other laptops work perfectly on this projector, and the "troublesome" laptops work correctly on other projectors. The laptops involved have all had native HDMI, not converted. Could this be a driver issue? I can't reproduce it with the laptops I have available, and the service agents can't find any problem with the projector. Does anyone have a suggestion? I'm wondering about trying an HDMI to VGA converter plus separate sound lead.
Bill_RW
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October 27th, 2021 04:00
We have a similar problem. We use an HDMI-connected Optoma projector. There are 1 or more single-pixel horizontal lines of white on the projected image with some visiting Dell and other laptops, sometimes flickering. Other laptops work perfectly on this projector, and the "troublesome" laptops work correctly on other projectors. The laptops involved have all had native HDMI, not converted. Could this be a driver issue? I can't reproduce it with the laptops I have available, and the service agents can't find any problem with the projector. Does anyone have a suggestion? I'm wondering about trying an HDMI to VGA converter plus separate sound lead.