Is there a way to force G-Sync ?

Discussion in 'Gaming (Software and Graphics Cards)' started by DRevan, Apr 12, 2019.

  1. DRevan

    DRevan Notebook Virtuoso

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    Hi there!
    I have a predator g5 with G-Sync 75 Hz LG screen and I have purcahsed a 3 ms 144 Hz B173HAN04.0 AUO screen.

    Ater installing the AUO panel it works fine, there are no issues with the displayed image and brighntess control also works correctly.

    However G-Sync gets disabled with this panel...

    Why?

    1) The BIOS does not support this panel for G.Sync?
    2) THe panel itself is not G-Sync certified and thus it is disabled by the driver?
    3) how can I find out who is the culprit ?

    THe seller said it support G-Sync, however after googling this panel I have found that all laptops using this part does not have G-Sync ...

    Is there a way to force G-Sync?
     
  2. saturnotaku

    saturnotaku Notebook Nobel Laureate

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    While I don't know what the secret sauce is for a laptop panel to be G-Sync certified, there is no way to force it on an unsupported one.
     
  3. DRevan

    DRevan Notebook Virtuoso

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    Well the VGA supports G-Sync and is working with the 75 Hz LG panel...

    Installing latest NVidia drivers ofcourse did not enable it ...

    is there a way to check who is at fault?
    The panel? The laptop? or both ?
     
  4. Kevin

    Kevin Egregious

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    Nvm give me a sec
     
  5. saturnotaku

    saturnotaku Notebook Nobel Laureate

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    It's likely a combination of factors. When I first had my MSI 16L13 (Eurocom Tornado F5), it came with a 1080p/60 panel that worked with G-Sync when the machine had its original i7 7700K CPU. When I upgraded to the Core i7 8086K, G-Sync functionality went away.
     
  6. DRevan

    DRevan Notebook Virtuoso

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    What? How? CPU component change should not affect G-Sync functionality. Did you have to do a BIOS upgrade for the new CPU?
     
  7. yrekabakery

    yrekabakery Notebook Virtuoso

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    Believe it or not, internal G-Sync functionality can be affected by the CPU. Someone with my unit could not use G-Sync until he upgraded from an i3 to i5, on the same BIOS version.
     
  8. DRevan

    DRevan Notebook Virtuoso

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    Wow, Nvidia really made laptop G-Sync a mystery ...

    Ever since it became available, no one from the community were able to actually tell us how laptop GSync work down to the most detailed level and what are the requirements and maybe how to bypass or mod 1-2 of them ...

    Everyone who explained laptop GSync only told parts that are just the tip of the iceberg.
     
    Last edited: Apr 12, 2019
  9. hacktrix2006

    hacktrix2006 Hold My Vodka, I going to kill my GPU

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    G-Sync has a cookie that cookie requires a hash / checksum to match, it take the Panel, GPU card, CPU to match and is tied also to the SMBIOS DMI area. If any of the links break no G-Sync, changing CPU will break at the DMI point whilst changing a panel that's not whitelisted will break at the panel. I am still learning about how G-Sync laptops works and this is what I have found so far.

    For CPU change check the marketing name in the bios as that might have changed and relates to DMI area which can not be modified due to a DXE Recovery module that reflashes correct info as this is also got checksum checks.

    Sent from my LLD-L31 using Tapatalk
     
  10. Casowen

    Casowen Notebook Consultant

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    Any Panel can be Gsync, but its that nvidia coding that whitelist for gsync. Who knows, with a little soldering from you might be able to pull off what many have been trying to do for awhile now.
     
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