Mobile G-Sync on DP1.2a monitors hypothetically possible.

[therealnickdanger]

We know that Mobile G-Sync uses Adaptive Sync on eDP. We know that FreeSync uses Adaptive Sync on eDP for mobile (old demo) and DP1.2a for desktop. In both scenarios, a portion of the GPU is used to calculate, coordinate, and control the panel voltages and refresh rates - this is where the fine-tuning comes into play. Also in both scenarios, the on-board scaler/ASIC/controller of the display needs to provide a relatively open and clear path between the GPU and panel's base functions, free from additional processing, etc. That path may only be configurable for one tech or the other at one time, but hypothetically speaking, it should be possible to adapt any FreeSync display to MG-Sync.

I've been searching high and low for any development on this in light of the module-less MG-Sync implementation on certain eDP laptops.

Is anyone trying to develop (hack, if you will) MG-Sync to work on FreeSync displays? I know that there are some very smart people that can do incredible things with software and hardware modifications, so I'm just curious if anyone has read or heard anything about this? I'm certain that it would involve both altering GPU drivers and also display firmware, so not at all simple. Maybe I'm just expecting mods too early and need to wait longer?

In addition to the complexity of calibrating displays to work with either technology, I suspect that NVIDIA and AMD are actively trying to limit this type of manipulation to protect the R&D costs they put into it as well as the integrity of their respective branding.

Please try to offer constructive, objective input. I'm not looking to start a "versus" thread.

 

[Flapdrol1337]

I've not seen anything like that.

Does mobile gsync use eDP? Maybe the gpu communicates with the panel directly.

 

[therealnickdanger]

I've not seen anything like that. Does mobile gsync use eDP? Maybe the gpu communicates with the panel directly.

Yes, this exactly what happens with MG-Sync. It doesn't work over LVDS, only eDP (embedded DisplayPort) - eDP1.3 to be exact. eDP1.3 = DP1.2a, more or less. eDP1.4a = DP1.3. Somewhere along the line, they got their feature stack and version numbering misaligned. 😀

All of these technologies require an unrestricted path from GPU to display. MG-Sync doesn't work (currently, maybe never) with Optimus since the Intel GPU sits inbetween the NVIDIA GPU and the display. Maybe when/if Intel actively supports Adaptive Sync, there might be a chance for dual-GPU setups to work, but I doubt it.