Occasional no signal on TV when powering on

Have a gremlin I can’t figure out.

Setup:

Nvidia shield —> Samsung q90r sound bar —>

hdmi splitter —> LG UJ6470

^—> capture card/raspPI

Splitter:

15 ft hdmi cable from shield to sound bar:

All other HDMI cables:

I’m using the Nvidia shield remote control to power on the shield, the tv via ir, and sound bar via ir.

All CEC options on all devices disabled.

Occasionally, when I press the power button on the remote to turn the system on, the TV will act like it’s not getting a signal, however the capture card / rasp Pi / Hyperion and LEDs all are working as intended. When this happens, the only way I can figure out to fix the no signal is to pull the power plug on the tv and plug it back in, then everything works as intended. The length of time that the system is off doesn’t seem to matter.

The Nvidia shield output is 4k@59hz

If I set output of the shield to 1080, I don’t get the issues.

Could it be the sequence of devices powering up?? Not quite sure what’s going on.

Thank you for any insight!

Zitat von pclin

Probably the 15 ft cable that is not 18 Gbps according to the description, and if it works with lower resolution that is another indication.

regards pclin

Do you think this would work:

Looking for thin cable to run through moldings

I have something like this too, do they actually do anything?

MyCableMart HDMI-HDMI Male to Female 5v Power Injector Adapter Cable via USB