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AMDGPU Fixes For Linux 5.0 Include FreeSync/VRR Properties For eDP Displays

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  • #11
    Originally posted by xiando View Post
    Freesync is nice and all but I'd prefer to be able to turn my monitors off and turn them on again without amdgpu module crashing over variable refresh-rate. This has been a problem since kernel 4.18.20. Could someone please share with me what did they mean by this:
    Do not destroy you monitor power button, control the monitor with software. I made a panel launcher for this script:
    Code:
    #! /bin/bash
    
    sleep 5s
    xset dpms force standby

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    • #12
      Originally posted by davidbepo View Post
      now make it work on hdmi, my monitor is waiting for it
      It is a long wait. AMD is not so much interested about hdmi because displayport is more modern and for computers.

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      • #13
        Originally posted by chithanh View Post
        Now reading the code, I wonder whether FreeSync will also work on Linux if you connect a FreeSync HDMI monitor via DVI->HDMI adapter to a DVI output? This works on Windows.
        No freesync support for hdmi monitors. DVI does not have freesync at all. Only displayport is supported.

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        • #14
          Originally posted by debianxfce View Post
          Do not destroy you monitor power button, control the monitor with software. I made a panel launcher for this script:
          Monitor buttons do not explode when they are pressed. And it doesn't matter if they are turned off with dpms or not, the result is the same.

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          • #15
            Originally posted by davidbepo View Post
            now make it work on hdmi, my monitor is waiting for it
            I'm in the same boat, but apparently my move will just have to be ditching the monitor. Too bad, it was a great monitor for the price, but if its just not going to work properly in Linux then I have no real usage for it as a primary display anyway. I guess freesync doesn't work as a secondary monitor anyway so one of these days I'll just buy a new monitor and push this one to the secondary. Its lame though. They got it to work in Windows they should get it to work in Linux too. But I'm not the one coding this in so I guess that's my problem more than theirs.

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            • #16
              Originally posted by chithanh View Post
              Actually, it may be more common than you think. As FreeSync uses Adaptive-Sync which originally comes from laptop panels, many of those support this "by accident".
              more like by spec. eDP is still Displayport and it has to support Adaptive Sync.

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              • #17
                Originally posted by chithanh View Post
                Actually, it may be more common than you think. As FreeSync uses Adaptive-Sync which originally comes from laptop panels, many of those support this "by accident".

                Some laptops like the HP Envy x360 15z support FreeSync, even though it is not mentioned in marketing material anywhere.
                Others like the Huawei Matebook D (Ryzen Edition) support FreeSync even though not advertised by the EDID even. However with a custom EDID you can get FreeSync to work (at least in Windows).
                My Envy x360 13" does not show freesync compatibility in the radeon settings in W10 as far as i know (i usually only boot it to update BIOS). Would that change if i edit EDID or is there something more to it? Or does Adaptive Sync work even though radeon settings says no freesync support?

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                • #18
                  Originally posted by xiando View Post
                  Freesync is nice and all but I'd prefer to be able to turn my monitors off and turn them on again without amdgpu module crashing over variable refresh-rate. This has been a problem since kernel 4.18.20.
                  Asking for help here isn't the best route for drawing attention to this issue. Have you opened a bug report on their bug tracker? You should also verify the bug can be reproduced on amd-staging-drm-next, and ideally you would bisect to find what commit introduced this bug/regression.

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                  • #19
                    Originally posted by thxcv View Post

                    My Envy x360 13" does not show freesync compatibility in the radeon settings in W10 as far as i know (i usually only boot it to update BIOS). Would that change if i edit EDID or is there something more to it? Or does Adaptive Sync work even though radeon settings says no freesync support?
                    You have to edit the EDID. After that you can enable Freesync in Radeon settings.

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                    • #20
                      Originally posted by debianxfce View Post

                      No freesync support for hdmi monitors. DVI does not have freesync at all. Only displayport is supported.
                      Lol, I've totally hugged up this time, I bought freesync HdmiOnlyMonitor because amdgpu freesync support come
                      ...
                      maybe later will come

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