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Drivers & Software

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Adept I
Adept I

Re: Samsung CF591 FreeSync Ultimate Engine causes self-restart

Of course, I could try out tomorrow. and I will give you response.

As I said, with FreeSync 'Standard Engine', there is no heavily 'PC self-restart' problem, though I ever got one time when I set Vertical Sync = 'ON' inside in-game setting. Only 'Ultimate Engine' has. So, I guess a setting of FreeSync = 'Off' on both AMD driver and Monitor setting, it should work fine without problem...

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Adept I
Adept I

Re: Samsung CF591 FreeSync Ultimate Engine causes self-restart

Please refer to this review : Samsung C27F591FD Review | PC Monitors

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Adept I
Adept I

Re: Samsung CF591 FreeSync Ultimate Engine causes self-restart

Hi amdmatt,

I just finished playing game in a couple hours with FreeSync = 'OFF' setting and unlocked frame rate in AMD driver setting (though the game is limited itself up to 60FPS as maximum). It works fine without crash.

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Community Manager
Community Manager

Re: Samsung CF591 FreeSync Ultimate Engine causes self-restart

Thanks for the update, so it looks unlikely to be a hardware issue.

We could use some more data points from other affected customers, if there are any.

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Journeyman III
Journeyman III

Re: Samsung CF591 FreeSync Ultimate Engine causes self-restart

Yes, it is a 60HZ monitor BUT because it is a Freesync monitor it goes to 72HZ when enabled. Anyway, I am having other issues with this monitor. See my other reply on this thread.

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Journeyman III
Journeyman III

Re: Samsung CF591 FreeSync Ultimate Engine causes self-restart

More data points from other affected customers you say? Well, here's one! I built my system in late January and it took me until last week (ie. May ie. 3 months) to figure out that all my problems are caused by Freesync (standard or ultimate engine, doesn't matter which). After installing Windows, drivers, and whatnot, I noticed (after a while) that I cannot enter BIOS (ie no matter how many times I pressed DEL or whatever). Many BIOS flashes, resets, hard resets, CMOS clears, bios short-circuiting, and neurons burned to a crisp later I decided to try a different monitor. Lo and behold, I can see the bios POST image and enter Bios. When I go back to CF591 it just boots into Windows, not allowing me to enter bios. So now if I want to tweak a Bios setting I have to boot into Windows, set my CF591 setting to Off on Freesync, restart, enter bios, restart, boot to Windows/set Freesync to ON.

Not only f*** that but when I play a video file and quickly switch to full screen, the image turns green as in the image I attached. If I don't quickly switch to fullscreen, it will nevertheless go to that green overlay but, after a while...

freesync issue on video playback.jpg

Also, worth mentioning that, unless I restart my PC with Freesync off the MoBo VGA LED remains turned on! It detects a problem with it (I'll say!) but the system does boot into windows, but the LED remains on.

Hardware:

Samsung CF591

Gigabyte AX370 Gaming K3

Ryzen 7 1800X

Corsair Vengeance RGB LED 16GB, DDR4-3200MHz

Asus ROG Strix Radeon RX 560 Evo Gaming 4GB

Software:

Windows 10 64 bit, version 1709, OS Build 16299.371

Radeon Software version 18.3.4

Latest bios, version F23d

Really hoping that this issue gets fixed. You might imagine what pain in the a this was and currently is because every time I play a video I have to turn Freesync off! Like a friend of mine said: thank God for this newer technology - if you had done all this stuff you did to try and fix it on an older motherboard/system, you would have completely destroyed it many times over! And that really would have been a huge fail for me, on my first attempt to build a PC all alone.

Rant OFF.

Freesync, ON. (most of the time)

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Adept I
Adept I

Re: Samsung CF591 FreeSync Ultimate Engine causes self-restart

2 weeks later after my last previous post here, My PC frequently restart more and more. After I spent time to find out what is the real root cause of my problem, The result is unstable electric from PSU issue. I checked 'Event Viewer' and looked up to 'Critical' Event Type. I decided to claim PSU, and yes, the after-service staff informed me that it is faulty unit. After replacing the new one (Thermaltake ToughPower RGB 750W Gold), My PC works fine.