4k Tv stuck at 30 hz. Please help!

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MasonTheMighty

MasonTheMighty

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Dec 28, 2015
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I've been trying for hours now to get this tv to work at 3840x2160 @ 60hz. I have a R9 390, and I know it doesn't support HDMI 2.0 . Which my TV does have, and on all four ports. So I purchased a Displayport 1.2 to HDMI 2.0 adapter, and plugged everything in. I've also purchased a new HDMI 2.0 Cable, straight from Amazon. My tv does support 4k @ 60hz, or at least it says it does. I have the TCL 55US57. This was the biggest reason I bought this TV, and if I can't get 4k @ 60 hz I will be returning it. (which sucks because I just mounted it) anyways, i've tried list all modes, and it's still not there. I've also wen't to tv inputs > and changed it to HDMI 2.0 . Of course, i've tried to go to display adapters > and then change it to 60 hz, but there isn't an option, even with options that it can't display. This is so frustrating, and if anyone could help I'd be very happy. Thank you !

Regards, Mason

Heres the link to the tv:
http://www.tclusa.com/currentmodels/55us57/
 
Solution
MasonTheMighty


So, I've finally done it. The long, 12 hour total journey has been finished. Troubleshooting, frustration, and agony, the TV is now running at 4k @ 60 hz, 4:4:4. lol, theatrics aside, I installed all my AMD drivers, and went back to 16.1.1. the tv went back to 30 hz, and I didn't feel a difference so I know for a fact it was still running at 30 hz, even after I uninstalled AMD drivers. Afterwards, I used CRU , just like the thread said. I went straight from 30, to 60. this...
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Do you know the name of that type of adapter? This sucks, I paid $28 for the adapter I have.. anyways, can you like link me to one or give me a relative name of what I should be looking for?

 
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I have the UpTab adapter, and it's plugged in currently. Same one, just from Amazon. And still the same problem.
 
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I have a default 1.4 cable that came with the tv. I also have another 1.4 cable I bought a long time ago from Amazon, but that didn't work either. Basically, the one I got from Amazon, is the only 2.0 cable I have. I also have Radeon settings, and Radeon Additional Settings. Which replaced CCC a long time ago, I think. I've checked and they are both up to date. so yes.

Heres a link to the cable I have, and the other cable I have, if it helps.

New Cable:https://www.amazon.com/AmazonBasics-High-Speed-HDMI-Cable-Standard/dp/B014I8SSD0/ref=sr_1_fkmr1_1?ie=UTF8&qid=1483584764&sr=8-1-fkmr1&keywords=amazonbasics+hdmi+2.90

Old Cable: https://www.amazon.com/AmazonBasics-High-Speed-HDMI-Cable-Supports/dp/B003L1ZYYM/ref=sr_1_fkmr0_1?ie=UTF8&qid=1483584728&sr=8-1-fkmr0&keywords=6ft+amazonbasics+1.4+hdmi

 
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There's no such thing as a HDMI 2.0 cable. Some '1.4' cables are actually high speed 18gbps cables. It's just a marketing ploy. However thats irrelevant if you tried them and they didnt work.

Crimson software includes Radeon settings so yeah youre good. Catalyst went out with the dinosaurs lol. Basically, am just trying to find out if you have the right resolution and refresh rate set in display settings. It should automatically identify monitor spec but you never know. 4k 60Hz is still pretty buggy.
 
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Yeah, your doing your best. Everything on my end seems to be fine, I just really wish I could get this fixed. I got on the phone with TCL support and all I got was a Indian telling me I had an adapter and they didn't make the adapter so it won't work. I feel like I've done everything I can. this sucks, because I was really looking forward to playing some 4k games at 60 fps. (smaller games like Dolphin Emulator and stuff) . Thanks for trying, if it helps at all, here's what Amd Radeon Settings told me about the TV, and my settings for it.


drnxjd


http://prntscr.com/drnxuv
 
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The fact you said AMD couldn't read the pixel format through DP is interesting. Have you tried setting a custom resolution in Radeon/Windows Display settings? The HDMI and DP will llkely receive different signals. Sounds like the adapter is miscommunicating or causing issues.

Did you try 8 bit in pixel format?
 
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Yeah, after a quick search though It seems I'm not the only one with this issue, but who knows. I usually don't connect to DP anyway. Sorry, but I'm not sure what you mean by 8 bit coloring in Pixel Format. There was a color depth option in properties, and I already set that to 8, connected to the adapter, and still no luck. And obviously since the R9 390 doesn't have HDMI 2.0 support, it wouldn't work on just the HDMI. (I checked on that as well though.) I've set a bunch of different resolutions in Windows Display Settings, but custom resolutions isn't supported with this TV. I checked the Color management in windows display settings, and I'm pretty confused with all the profiles.
 
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Yeah, sorry, I meant in properties menu. I think Virtual Super Resolution disables custom resolution so it could be that. It sounds like there may be conflicting issues. May be a good idea to reset all Radeon and Windows display settings and start from scratch.

And what do you mean you dont usually connect to DP? Arent you using the GPU's DP output?
 
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I meant I just don't use Displayport for any other monitors, so I don't know too much about DP. The company that manufactured the adapter sent me this email with some tips, so I'll paste it.
----------------------------------------


Thank you again for your order.
Here are some Tips and Tricks for using your new DisplayPort 1.2 to HDMI 2.0a Active Adapter 4K@60Hz.
Many TV manufacturers (Sony, Visio, LG, Samsun) are labeling their HDMI ports as 4k at 60Hz which are NOT HDMI 2.0 capable. Make sure the HDMI port you are using on the TV is HDMI 2.0 capable and not just 4K at 60HZ capable. HDMI port 4K at 60Hz indicates it is HDMI 1.4 capable of running 4K at 60Hz with color sampling of 4:2:0. Our adapters are full specification HDMI 2.0 and support color sampling 4:4:4 at 4K at 60Hz.
* If your TV has marking 4K at 60Hz at the HDMI port, you will need to change the color scheme to 4:2:0 in your NVidia or AMD drives settings then change the refresh rate to 60Hz.
* Apple MacBook Pro and Mac Pro – For now Apple El Capitan doesn't support 4K at 60Hz out of the box. To be able to enjoy 4K at 60Hz on OSX you need to install SwitchResX to force the 60Hz by creating custom resolution. You can download SwitchResX form madrau.com
First I downloaded (and purchased) SwitchResX, but you can download a trial that works for 10 days.
In El Capitan there is a new security feature called SIP "System Integrity Protection". Unfortunately this prevents SwitchResX from modifying the system files that contain resolution information. But you can temporarily disable "System Integrity Protection" to make changes. Once the resolution has been created and activated, you can turn SIP on again.
Disabling SIP requires booting into the recovery partition. You boot in recovery mode by pressing CMD + R when starting up your Mac.
Then open a Terminal window. Utilities->Terminal and type the command below: csrutil disable
To re-enable SIP once the changes have been made; boot back into the recovery partition and set state to enabled: csrutil enable
Now boot to El Capitan and open SwitchResX. Select the TV from the pane on the left. Then select "Custom Resolution". I entered 3840 x 2160 and made sure that the Scan Rate for Vertical was set to 60 hz. Scaling is also possible.
Save the changes (by hitting apply, and rebooting your mac.. it will ask you to save). After the reboot you will see the custom resolution added within SwitchResX under "Current Resolutions" for your TV.
* Often TV's have 4 or more HDMI ports, but only 1 is suited for "2.0" standard.
* Please disable all TV enhancements like up-converting picture enhancements because in many cases this settings will add lag.
* On many TV’s you need to turn on "HDMI UHD Color" manually in the settings of your TV under "Picture Options" for the HDMI port to which your pc/mac is connected and Make HDMI CEC is Disabled.
* Pleas make sure "Input Type" is set to "PC" or "Game Mode".
* Please make sure your device Mini DisplayPort or DisplayPort are version 1.2 or 1.3.
* By default some devices have their Mini DisplayPort and DisplayPorts configured for DP 1.1 and you need to change manually to 1.2.
* Also it could help when connecting 2 screens, to set the screen connected thru the Adapter as second/secondary screen.

* Use an HDMI cable rated for the bandwidth of 4K "4K HDR, 18 Gbps"

* In many cases it will help creating custom resolution In Graphics Drivers settings and create 3840x2160 or 4096x2160 and use Timing: CVT-Reduced Blanking (RB)

* AMD Graphics Cards: There have been many bugs and issues with latest releases form AMD if all above is not helping to get 60Hz try to roll back to 16.11.1 or 16.8.2.

* Microsoft Surface Pro 2: Their max resolution depends on which CPU thy have: H-Processors: 3840 x 2160@60Hz and U-Processors: 3200 x 2000@60 Hz, 3840x2160@30Hz

* Seiki TVs: Change HDMI EDID from 1.4 to 2.0.

If you have any question please contact us!

Regards.
UPTab
-----------------------------------
They gave a suggestion to roll back to 16.8.2 , so I'm currently doing that , and that will reset my Radeon settings as well. Not sure on how to reset windows display settings, I mean it's been basically @ 4k 30 hz all week, and I haven't changed anything else.
 
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Yeah some good tips on there. Check you are using the HDMI 2.0 port too (am sure you are). It looks like your tv is capable of running 4:4:4 4k 60Hz so I cant see any real reason why it isn't working.

And yeah there's not much to reset re Windows display settings. I just meant to use the default untouched profile basically. By the time you've worked this out you'll be a 4k guru if you look on the bright side lol.
 
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Well, now I am really starting to worry. I've been at this for another 3 or 4 hours lol, and I've done everything they told me. The problem is that the settings in the tv are pretty basic, I feel like it's lacking advanced control. I made sure the tv input was on HDMI 2.0 , and HDMI 2.0 mode, I've rolled back to 16.1.1 , and tried 4.2.2 , and 4.4.4 . All on 8 bit color, of course. With no luck at all. I seriously think there's nothing left to try. I can do custom resolutions, and I enabled CVT-reduced blanking like they said. but nothing is working. Every single time I just keep going to windows display settings to check and set it to 60 hz, and nothings there but 23-30 hz. I also checked List All Modes. Everything should be working, it's just not. And yeah, I will be a 4k guru. and I don't mind spending all this time, as long as I end up with a 4k 60 hz TV in working condition. any other ideas? I'll probably contact UpTab and ask them.

 
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Well have been all through the manual and there doesnt seem to be a lot you havent tried already. It could be that you need to power on the PC when set to 60Hz for the tv to identify the mode, or to perform the handshake, but it is a bit of a tough one. I do know a lot of people have issues with this, and it's a bit hit n miss with hardware compatibility and AMD drivers. Have you tried totally uninstalling the AMD drivers? That seemed to work for some people.

There's some interesting stuff in this AMD thread, but ultimately I am pretty out if answers myself.. https://community.amd.com/thread/203293
 
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Well, it's 4AM, and we have finally made a breakthrough. I didn't get around to this until about 3, but I read through the thread and cautiously uninstalled all of my AMD drivers and rebooted. On reboot, my primary monitor shut off, my secondary stayed up, and the tv duplicated that second monitor. I went into Windows Display Settings to set the tv to extend, but it only showed up as one display. Not only that, but it appeared I could change my resolution up to 4k, on my secondary monitor. Which made no sense, so I tried it. The secondary monitor shut off, and just the tv stayed up, running at 4k, and i'm pretty sure 60hz. The tv itself still said @30hz, and windows Display Settings said 64. I did overclock my secondary monitor to 64, so it's weird. In the morning im going to see what happens when I only have the tv connected, (god I hate unplugging DVI-D lol) but this is progress. I unplugged the second monitor while just the 4k one was on, and it was still working, so do you think it was actually displaying 60hz on it's own? I have more investigating to do, but just wanted to let you know that this is very good progress. So happy.

Edit: even though it is just the tv running, every other monitor isn't connected, the tv says 30hz, and I'm getting some bad screen tearing. Is that normal, or do you think there is some type of duplication of the screen or somthing else? Idk, I know it is running 4:4:4.
 
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That certainly sounds like progress. Am glad. Sounds like it has something to do with the HDCP handshake or an initialization of some kind.

I didn't know there was a secondary monitor involved though. Was that always attached? What was it connected via?
 
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So, I've finally done it. The long, 12 hour total journey has been finished. Troubleshooting, frustration, and agony, the TV is now running at 4k @ 60 hz, 4:4:4. lol, theatrics aside, I installed all my AMD drivers, and went back to 16.1.1. the tv went back to 30 hz, and I didn't feel a difference so I know for a fact it was still running at 30 hz, even after I uninstalled AMD drivers. Afterwards, I used CRU , just like the thread said. I went straight from 30, to 60. this, was a terrible choice. I couldn't get the display to activate, and had to go through a system restore, which 2 of them failed lol. it was dumb, because afterwards I figured out i didn't even have to do that. anyways, everything was back to normal, so I decided to give CRU a try a couple hours later. This time, I went up by 5 hz intervals, and everything went well. I reset, and it worked. I had achieved 60 hz. I went to Display Settings > adapter properties, and for the first time I saw the 60 hz option @ 4k. I seriously never though it would've been possible, I was convinced I never would've seen the option. But there it was. So I turned on 60hz and it worked! so now, I'm typing this on my wonderful, 4k display running at 4:4:4 Chroma and 60hz. It's wonderful, and I can't thank you enough. You helped me through this whole problem, and ultimately gave me the answer to solve it, in the thread that you linked me. So really, thank you so much. I am now, a 4K guru. Master of the TLC lineup with terrible support. All jokes aside, thanks , it's wonderful. great to know we have people like this in the forum.

To anyone reading this in the future trying to solve a similar problem, here's some tips, and what I did to get it working:


  • Make sure you have a HDMI 2.0 Capable TV with a native refresh rate of 60 HZ.

    I would recommend that you have a HDMI 2.0 Cable, but from what I've heard they aren't required. Double check though, the cord has to be able to run 4k@60hz.

    Download CRU (Custom Resolution Utility) and select the TV labeled as "*active"

    Double click it, and change the refresh rate at the bottom up by 5 HZ, and continue doing that until you hit 60, or even above if you wish. If you get a black screen, disconnect the display and plug it back in (I also had extra monitors to help)

    Then click apply, ok, and run the Restart 64, or whatever suites your needs.

    Then your tv should be working at 60 HZ!

Thanks so much Multipack, it's finally solved and I can move on with my life.

:pt1cable:
 
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Solution
Am glad you got it fixed bud, and it's a good thread to leave here for anyone having a similar issue. Who knew 4k could be so complicated lol. AMD drivers dont always play well with 4k, and there's a lot of teething issues, but as long as you have it fixed then all's good. Am sure you are happy you can move on with your life. Enjoy your 4k gaming!
 
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