45 Replies Latest reply on May 10, 2018 8:19 AM by amdmatt

    Is Freesync no longer supported for Samsung CF791?

    ciscoh

      So I bought my Vega 64 and Samsung CF791 monitor in the deals when they were first launched.

      Since 18.1.1, it seems I lost Freesync when using a Displayport cable (tried numerous cables, same result with each). I then moved onto HDMI. At this time I changed to a Vega 64 LC. Then since 18.2 roughly, It seems I have lost Freesync all together.

      It's definitely a software issue as reinstalling 18.1.1 gives me nice smooth Freesync game play.

      At the moment I get ''less'' tearing using HDMI, and unbearable tearing with Display port.

      If it's no longer being supported, why would AMD market this monitor with the launch of Vega?

      To confirm: Freesync Ultimate Engine is enabled on the monitor. Freesync is ''ON'' on Radeon Settings. I've experimented with Chill and FRTC, but these remain off. I've experimented with individual game profiles with AMD optimized Freesync and Freesync ON.

        • Re: Is Freesync no longer supported for Samsung CF791?
          mungo

          Hi. You are not alone with this issue. I created a similar topic in this forum and i submitted a Supportticket at AMD Support. So far so bad.

          • Re: Is Freesync no longer supported for Samsung CF791?
            jd9786

            I as well can't get freesync to work on the newer drivers using the CF791. I believe it's an issue though and not lack of support, because you are still able to turn on freesync in the radeon settings, it just makes no difference.

            • Re: Is Freesync no longer supported for Samsung CF791?
              fuzzmunky

              Freesync issues continue not just on this monitor but on the Nixeus EDG27.

              It may have something to do with multimonitor setup... maybe. I only say that because that is my setup and it was mentioned in a previous bug fix.

              • Re: Is Freesync no longer supported for Samsung CF791?
                fuzzmunky

                I seem to have fixed Freesync with the help of Mr Nixeus.


                He mentioned something about Game DVR, but in the Fall Creators Windows 10 update the Game DVR setting doesn't seem to work. I went into the registry to turn it off using these instructions.

                 

                Open Registry Editor (Run > regedit)

                Navigate to HKEY_CURRENT_USER\System\GameConfigStore

                Set the value of DWORD "GameDVR_Enabled" to 0

                Go to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\

                Create key "GameDVR".

                Create DWORD 32bit called "AllowGameDVR" and set to 0

                Restart your computer.

                 

                After this, my Freesync in games and in Gsync demo is working again in 18.3.4

                The windmill demo still does not work however, but I am told this is because that was old software that doesn't do freesync the way it is programmed now.

                 

                Please let me know if this fixes it for you Samsung users, and maybe amdmatt, you could look into why this is happening?

                  • Re: Is Freesync no longer supported for Samsung CF791?
                    elstaci

                    FYI:an OPS at Nvidia made up a script to disable GAMEDVR and XBOX. One of the expert commentators says it is risky to use and may open Windows to virus/malware. Don't know if this is factual or not. Anyways here is the script from Nvidia:

                    Hello everyone,

                     

                    I have re-posted this here as it made more sense. You can't update drivers to fix this. It takes a lot more to undo the changes in the Win 10 Creators update that are causing so much grief. But there is a fix. To make it quick and simple I wrote a script that does all that is required.

                     

                    There have been many posts claiming to have a fix. In most of these I have seen some really bad advice on what is wrong and how to fix it.

                     

                    If you want to fix this issue once and for all. You don't need to remove your drivers, download any shady apps or wreck your folder permission to fix this. The script I provided is safe. It only changes what is required to undo the root of the problem. The instructions are below. The script must be run in the order top to bottom. So please make sure your first line is ( and the last line is ). This makes it run in series. There is no fat. Every line is required.

                     

                    Simply turning off the XBOX related settings does not stop the "GameBarPresenceWriter.exe" from running while gaming. The script below can be copied and pasted into an admin CMD window or if you have powershell as the default open a powershell admin command-line and type CMD then press enter. Then paste the code below to run. You can also just save it as a .BAT and run as Admin.

                     

                    This has fixed The division, Wild-lands, Rocket league, and Doom for me. I have not had the issue return either I might add!

                    Gaming is as smooth as ever for my friends and family. If the direction are still too hard to understand you might want to ask a "Tech" friend to assist you.

                     

                    If a game is still giving issues after running the fix, please post here PM me and maybe I can help you work out why.

                     

                     

                     

                    REM --- copy from here-----

                     

                     

                    (

                    reg add "HKLM\System\CurrentControlSet\Services\xbgm" /v "Start" /t REG_DWORD /d "4" /f

                    sc config XblAuthManager start= disabled

                    sc config XblGameSave start= disabled

                    sc config XboxGipSvc start= disabled

                    sc config XboxNetApiSvc start= disabled

                    schtasks /Change /TN "Microsoft\XblGameSave\XblGameSaveTask" /Disable

                    takeown /f "%WinDir%\System32\GameBarPresenceWriter.exe" /a

                    icacls "%WinDir%\System32\GameBarPresenceWriter.exe" /grant:r Administrators:F /c

                    taskkill /im GameBarPresenceWriter.exe /f

                    move "C:\Windows\System32\GameBarPresenceWriter.exe" "C:\Windows\System32\GameBarPresenceWriter.OLD"

                    schtasks /Change /TN "Microsoft\XblGameSave\XblGameSaveTask" /Disable

                    takeown /f "%WinDir%\System32\bcastdvr.exe" /a

                    icacls "%WinDir%\System32\bcastdvr.exe" /grant:r Administrators:F /c

                    taskkill /im bcastdvr.exe /f

                    move C:\Windows\System32\bcastdvr.exe C:\Windows\System32\bcastdvr.OLD

                    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\GameDVR" /v "AppCaptureEnabled" /t REG_DWORD /d "0" /f

                    reg add "HKCU\Software\Microsoft\GameBar" /v "UseNexusForGameBarEnabled" /t REG_DWORD /d "0" /f

                    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\GameDVR" /v "AudioCaptureEnabled" /t REG_DWORD /d "0" /f

                    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\GameDVR" /v "CursorCaptureEnabled" /t REG_DWORD /d "0" /f

                    reg add "HKCU\Software\Microsoft\GameBar" /v "ShowStartupPanel" /t REG_DWORD /d "0" /f

                    reg add "HKCU\System\GameConfigStore" /v "GameDVR_Enabled" /t REG_DWORD /d "0" /f

                    reg add "HKLM\Software\Policies\Microsoft\Windows\GameDVR" /v "AllowgameDVR" /t REG_DWORD /d "0" /f

                    reg add "HKCU\Software\Microsoft\GameBar" /v "AllowAutoGameMode" /t REG_DWORD /d "0" /f

                     

                    )

                     

                     

                    REM ---End Copy Here---

                     

                    This RE-ENABLE GAMEDVR/XBOX script was made by another User after I made a comment about undoing what the first script had done to the Registry:

                     

                    A couple of corrections have been made to the script to re-enable Game Bar / Game DVR folks... I had some things backwards but it's working 100% now, I've tested it. Windows Update won't know the difference, because it also restores the original permissions and ownership to the files affected. You will need to restart your computer, though.

                     

                    • @echo off
                    • goto check_Permissions
                    • :check_Permissions
                    •   echo Administrative permissions required. Detecting permissions...
                    •   net session >nul 2>&1
                    •    if %errorLevel% == 0 (
                    •   echo Success: Administrative permissions confirmed.
                    • move "C:\Windows\System32\GameBarPresenceWriter.OLD" "C:\Windows\System32\GameBarPresenceWriter.exe"
                    • icacls "%WinDir%\System32\GameBarPresenceWriter.exe" /setowner "NT Service\TrustedInstaller" /c
                    • icacls "%WinDir%\System32\GameBarPresenceWriter.exe" /grant:r Administrators:RX /c
                    • schtasks /Change /TN "Microsoft\XblGameSave\XblGameSaveTask" /Enable
                    • move C:\Windows\System32\bcastdvr.OLD C:\Windows\System32\bcastdvr.exe
                    • icacls "%WinDir%\System32\bcastdvr.exe" /setowner "NT Service\TrustedInstaller" /c
                    • icacls "%WinDir%\System32\bcastdvr.exe" /grant:r Administrators:RX /c
                    • schtasks /Change /TN "Microsoft\XblGameSave\XblGameSaveTask" /Enable
                    • sc config XblAuthManager start= auto
                    • sc config XblGameSave start= auto
                    • sc config XboxGipSvc start= auto
                    • sc config XboxNetApiSvc start= auto
                    • reg add "HKLM\System\CurrentControlSet\Services\xbgm" /v "Start" /t REG_DWORD /d "3" /f
                    • reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\GameDVR" /v "AppCaptureEnabled" /t REG_DWORD /d "1" /f
                    • reg add "HKCU\Software\Microsoft\GameBar" /v "UseNexusForGameBarEnabled" /t REG_DWORD /d "1" /f
                    • reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\GameDVR" /v "AudioCaptureEnabled" /t REG_DWORD /d "1" /f
                    • reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\GameDVR" /v "CursorCaptureEnabled" /t REG_DWORD /d "1" /f
                    • reg add "HKCU\Software\Microsoft\GameBar" /v "ShowStartupPanel" /t REG_DWORD /d "1" /f
                    • reg add "HKCU\System\GameConfigStore" /v "GameDVR_Enabled" /t REG_DWORD /d "1" /f
                    • reg add "HKLM\Software\Policies\Microsoft\Windows\GameDVR" /v "AllowgameDVR" /t REG_DWORD /d "1" /f
                    • reg add "HKCU\Software\Microsoft\GameBar" /v "AllowAutoGameMode" /t REG_DWORD /d "1" /f
                    •    ) else (
                    •   echo Failure: Current permissions inadequate.
                    •    )
                    •   Pause > null

                    If you had attempted to use the re-enable script previously, you'll need to run the disable script again, then the updated re-enable script for it to finally be successful.

                  • Re: Is Freesync no longer supported for Samsung CF791?
                    ciscoh

                    Just wanted to update with my specs.

                    System Configuration:

                    Motherboard: MSI Z97i Gaming ACK (Bios: A.4)
                    CPU: Intel i7 4790k
                    Memory: 16GB DDR3
                    GPU: MSI Vega 64 LC
                    VBIOS: 115-D0500500-103
                    Driver: 18.3.4
                    OS: Windows 10 Home, Ver: 1709, OS Build: 16299.309

                    Monitor: CF791 Samsung

                    Steps to Reproduce:

                    1. Install necessary driver, GPU and medium-end CPU
                    2. Enable Free Sync
                    3. Any Graphical Setting
                    4. Screen Tearing experienced
                    5. Most noticeable with HDMI than DP

                    Expected Behavior:

                    Game runs smoothly with good performance with no visible issues

                    Actual Behavior:

                    Constant Tearing, oddly more visible on DP than HDMI

                    Tried Samsungs ''driver'' for the monitor, this creates a 'purple filter' across the screen. Tearing still apparent. Currently using the ''Generic PnP'' for the monitors as samsung' seems to make 0 difference. Patch 18.1.1 is the last working patch for me with Freeesync.

                    • Re: Is Freesync no longer supported for Samsung CF791?
                      jd9786

                      Any updates guys? Is this issue being looked at, is there anything else we need to share?

                      • Re: Is Freesync no longer supported for Samsung CF791?
                        mungo

                        Maybe we should start to compare our Firmwareversions for the CF791. It seems there was a Firmwareupdate by Samsung last Year.

                        • Re: Is Freesync no longer supported for Samsung CF791?
                          jd9786

                          Couldn't find anything related to the firmware either. But it seems there are different models. Mine is LC34F791WQUXEN, but there is also LC34F791WQNXZA. What model do you guys have?

                          • Re: Is Freesync no longer supported for Samsung CF791?
                            jd9786

                            I'm not sure the problem is on Samsung's side. I mean freesync works perfectly fine in 17.12.x versions. It only stopped working in the recent updates (from 18.x.x and up i think). What makes this confusing though is that not everyone is experiencing the problem. And if engineering can't reproduce it, obviously they can't fix it.

                             

                            Hate to say it, but I think we're running out of luck...

                            • Re: Is Freesync no longer supported for Samsung CF791?
                              galimate

                              Hi, I experienced the same problem with the same solution: my Vega 56 on a LG 27UD58 could not do freesync under the newest Adrenalin drivers (18.2.1 and 18.3.4), but after a little research I found that others had the same problem and uninstalling the Adrenalin driver with DDU and installing 17.11.4 Crimson did solve the problem, now the Freesync works. Here is the post  where I found the solution: https://www.reddit.com/r/Amd/comments/88suo1/is_freesync_no_longer_supported_for_samsung_cf791/

                               

                              I previously owned a R9 390 with the same monitor and a crimson driver (cant remember which but I used it June-July 2017 and assume with the latest drivers) and the freesync worked fine.


                              Please AMD investigate where lies the problem in your drivers because I'm pretty sure that a lot more people have the same problem, they just don't bother to research and post about it.

                              1 of 1 people found this helpful
                              • Re: Is Freesync no longer supported for Samsung CF791?
                                mungo

                                AMD are you still into this?

                                Any news about it?