Many issues 4K with Radeon RX 570

dulcificum · 2 Jul 2019 at 20:53

I run a PLP setup and upgraded my 1440p centre monitor to a 40" 4K panel (Samsung UE40NU7120KXXU) flanked by two old 1050p HP LA2205wg.

Since running this, I've had a lot of issues. I'm using a new HDMI v2.0 18 Gbps cable but still see the following problems:

4K screen flickering or not receiving signal every few days. Unplugging and replugging HDMI eventually sorts it as well as toggling chroma 4:4:4 and game mode but takes about 20 minutes.
Even though I turn power saving off, it still turns off after a few hours. Then, sometimes but not always, after a few days, f.lux and other alternatives stop working on the 4K monitor. Other monitors unaffected.
Every week or so all displays go greyscale. This is not the Windows 10 greyscale feature. Reboot fixes it but not helpful when I'm running multi-day transfers.
Sometimes it just loses signal and goes all green until I unplug/replug multiple times and toggle game mode/4:4:4.
The whites are incredibly blown out on HDR10 content.

Is this most likely to be an issue with the monitor, the cable or the GPU? How can I troubleshoot?

Stephanie Peterson · 2 Jul 2019 at 20:55

I have seen similar sort of things with my 1080ti and a vega before it.
Especially your first one.

Suspect its a crap cable in my case, its a long hdmi lead to my telly about 5m and was not expensive.

dulcificum · 2 Jul 2019 at 21:01

Stephanie Peterson said:
I have seen similar sort of things with my 1080ti and a vega before it.
Especially your first one.

Suspect its a crap cable in my case, its a long hdmi lead to my telly about 5m and was not expensive.

Guess that makes sense, troubleshoot the cheapest component first.

I did only pay £8 for it but it's only a 2 m run and it was advertised as 18 Gbps and HDMI v2. The old cable I replaced couldn't even handle chroma 4:4:4.

Where's recommended to get a decent cable then?

dulcificum · 3 Jul 2019 at 10:54

Can I rule out it being an issue with my card not being able to power the pixels? It chugs along at about 25% according to Task Manager.

Phixsator · 5 Jul 2019 at 09:09

dulcificum said:
Can I rule out it being an issue with my card not being able to power the pixels? It chugs along at about 25% according to Task Manager.

I would look at that cable first. Ive had similar issues with a **** poor DP cable and a few HDMI cables. While you shouldn't buy the stupid overly prices "gold" cables paying to little can also lead to issues. I'm sure you can find a thread somewhere with properly priced cable recommendations.

MagicBoy · 5 Jul 2019 at 11:38

dulcificum said:
Even though I turn power saving off, it still turns off after a few hours. Then, sometimes but not always, after a few days, f.lux and other alternatives stop working on the 4K monitor. Other monitors unaffected.

Blame the EU. If you don't use the remote or press any buttons on the TV for 4 hours it assumes you fell asleep and turns itself off.

dulcificum · 9 Jul 2019 at 19:07

MagicBoy said:
Blame the EU. If you don't use the remote or press any buttons on the TV for 4 hours it assumes you fell asleep and turns itself off.

Is there any workaround for this? Software maybe?

MagicBoy · 9 Jul 2019 at 19:37

Software on the PC or for the TV?

dulcificum · 9 Jul 2019 at 19:41

MagicBoy said:
Software on the PC or for the TV?

For PC to stop it going to sleep. I only use it as a PC monitor.

Stephanie Peterson · 9 Jul 2019 at 19:42

What your TV is going to sleep after 4 hours? Turn off the sleep function then.

dulcificum · 9 Jul 2019 at 19:44

Stephanie Peterson said:
What your TV is going to sleep after 4 hours? Turn off the sleep function then.

As above.

dulcificum said:
Even though I turn power saving off, it still turns off after a few hours.

Sleep and power saving are both off.

dulcificum · 14 Jul 2019 at 17:52

Anyone?

james.miller · 14 Jul 2019 at 18:02

Process of elimination.

Reinstall the gpu drivers, that costs nothing but time. If that doesn't work then look at the cheapest component - the cable. Buy another one, Premium Certified this time. Itll cost you a few more quid but youll know the cable is certified to the job it is supposed to be capable of doing.

More on premium certification and what to look for:
https://www.hdmi.org/manufacturer/premiumcable/faq.aspx

If that doesn't work, time to start swapping out the expensive stuff ....

dulcificum · 14 Jul 2019 at 18:03

I have now bought a premium certified cable that passes the QR test.

I don't see how that helps with the auto power off though.

james.miller · 14 Jul 2019 at 18:07

I didn't say it would. It should stop any connection issues. If the screen auto powers down without user input (and the picture isnt static) then you would need to find a way to override that on the screen. Nothing you can do from the card.

dulcificum · 14 Jul 2019 at 18:11

james.miller said:
I didn't say it would. It should stop any connection issues. If the screen auto powers down without user input (and the picture isnt static) then you would need to find a way to override that on the screen. Nothing you can do from the card.

The picture is static which is why I brought up the possibility of software fixes. Surely I can't be the only person using a TV as a monitor?!