I have a HP SPECTRE X360 13-AC033DX notebook, and love it so far other than one issue. I have a USB-C multiport adapter (actually 2 of them - 1 Cable Matters USB-C Multiport Adapter with 4K HDMI, 2x USB, Ethernet, and Power Delivery in Black (Thunderbolt 3 Port Compatible) and a JCreate JCA374) and use this to power my notebook, connect it to ethernet, and HDMI to connect to an external monitor. When I am sitting at my desk and using a 27" Samsung monitor, it works great - I have had zero issues with the Samsung monitor being picked up.
However, I was presenting at a conference and when I connected my notebook using an hdmi cable with both these adapters to the projector, I had issues with getting the external display to show up - it kept saying "no signal". I have also observed the same issue when connecting to larger 65" LG TVs in my office conference rooms - when I see this issue, I can see in "Intel Graphic Settings", that it is picking up the external LG TV (it even says so), but the LG TV says that it is not receiving a signal - very weird. Even weirder, I was tinkering around with the LG TV settings in "Intel Graphic Settings", changing the refresh rate and resolution, and I managed to get one of the LG TVs to reliably display. However, try as I might with the other LG TV, I have been unsuccessful in getting that to work.
- Anybody else have a similar issue? Any suggestions on how to solve it?
- I have tried connecting to a TV that was already on; I have tried connecting the hdmi cable with the TV off and then powering on the TV; I have tried connecting the multiport adapter to the TV first, and then connecting to my notebook - no pattern to why it works with 1 LG tv but not the other.
- Given that I got this to work consistently with 1 tv without changing the hardware or software (but no idea what did it), I wonder where the problem lies - some gremlins lurking here I guess.