CEC is a standalone pin on HDMI, so if the adapter or cable doesn’t wire that up (for whatever reason) then it won’t work.
And if you’re using DisplayPort output (Which is probably the case, since HDMI has a load of issues), then you need to ensure whatever adapter you’re using supports translating from the DP encoding to the HDMI-CEC pin.
If that all works, then you should be fine, as the software side has supported it for ages (i.e. Linux 4.8 added support)
CEC is a standalone pin on HDMI, so if the adapter or cable doesn’t wire that up (for whatever reason) then it won’t work.
And if you’re using DisplayPort output (Which is probably the case, since HDMI has a load of issues), then you need to ensure whatever adapter you’re using supports translating from the DP encoding to the HDMI-CEC pin.
If that all works, then you should be fine, as the software side has supported it for ages (i.e. Linux 4.8 added support)