I may have missed something, but after reading through the settings listing, I do not think it is possible. Eight-bit HDMI is an older standard, I am guessing newer cameras dropped support for it.
You may have some good results with a converter:
But, …., it may be less expensive to upgrade to a recently released field monitor that supports newer standards.
edit: HDMI v2.0 is the minimum standard that supports 10-bit bit-depth, so avoid monitors that only support HDMI v1.4.
I'm using x-s10 with 16-55mm 2.8f lens. A week ago I've got message "turn off the camera and turn on again" without any known for me reason. I took out battery, lens, sd card and after few hours I was able to use it. Next day the same story, so I plugged sd card via card reader to my smartphone, cleared it out. I'm using the newest firmware for the camera and lens. I'm not able to take pictures for 3 days already...
When I point the camera to the ceiling I see that the screen is a little bit wobbling so I suspect that sth is wrong with IBIS.
Have any of you had such an issue with your camera? What have you done in this case?
What you say is suggestive and I will try it out of curiosity. But in fact I bought second hand a Bowens GM500 (€60!!) quite old and it works perfectly with the cable, so the cable was not the problem.