[SOLVED] Tv 120 hz problem in PC

[adaysep91]

Good morning everyone. I come dragging a problem and I would like to know if someone can give me a hand, because I can not find the solution .... I have my desktop PC with a ryzen 5 3600 and a Nvidia RTX 3070. In addition, I usually play on a Samsung TV, specifically the Q90T model. I have the resolution at 4K, and the screen at 60 hz. The problem comes when I try to set the screen to its maximum refresh rate, which is 120 hz. In this mode, constantly and arbitrarily the image goes black for a second or two, then returns, repeating this randomly. The problem disappears completely when I go back to 60 hz, but I would like to solve the 120 hz problem especially if I want to play at more than 60 fps. I have the hdmi 2.1 properly connected to the TV port which supports 4k-120 fps. In fact, with my previous gpu, a 5700 XT, I also had everything connected the same way, and the 120 hz mode did not give me this problem. Logically I also have all drivers and drivers checked, reinstalled using clean installs with DDU and updated to latest version. Also checked that the display drivers are updated, and as for the cable I doubt it is the problem because as I said before it worked perfect. I don't know if I'm missing something, but I've run out of ideas to try to solve this. I hope someone can come up with the key. Thanks.

 

[adaysep91]

Good morning everyone. I come dragging a problem and I would like to know if someone can give me a hand, because I can not find the solution .... I have my desktop PC with a ryzen 5 3600 and a Nvidia RTX 3070. In addition, I usually play on a Samsung TV, specifically the Q90T model. I have the resolution at 4K, and the screen at 60 hz. The problem comes when I try to set the screen to its maximum refresh rate, which is 120 hz. In this mode, constantly and arbitrarily the image goes black for a second or two, then returns, repeating this randomly. The problem disappears completely when I go back to 60 hz, but I would like to solve the 120 hz problem especially if I want to play at more than 60 fps. I have the hdmi 2.1 properly connected to the TV port which supports 4k-120 fps. In fact, with my previous gpu, a 5700 XT, I also had everything connected the same way, and the 120 hz mode did not give me this problem. Logically I also have all drivers and drivers checked, reinstalled using clean installs with DDU and updated to latest version. Also checked that the display drivers are updated, and as for the cable I doubt it is the problem because as I said before it worked perfect. I don't know if I'm missing something, but I've run out of ideas to try to solve this. I hope someone can come up with the key. Thanks.

 

[Darkbreeze]

When you changed graphics cards did you use the DDU to do a COMPLETE uninstall of the AMD graphics drivers, and THEN install the latest Nvidia drivers, or did you just swap cards out and install the Nvidia drivers?

If that's what you did, then I'd suggest you download and run the Display driver uninstaller, twice, once for AMD and again for Nvidia, and then do a clean install of the Nvidia drivers.

It's an important distinction that you run it for BOTH AMD and Nvidia, IF you didn't run it for AMD before you first installed the Nvidia card and drivers.

How To - How to perform a CLEAN install of your video card drivers.

Updated 9-19-19 How to do a CLEAN install of your graphics card drivers using the Wagnard tools Display Driver Uninstaller A major issue on many systems is the presence of multiple graphics card drivers or drivers that have been incompletely uninstalled followed by the installation of...

forums.tomshardware.com

 

[adaysep91]

When you changed graphics cards did you use the DDU to do a COMPLETE uninstall of the AMD graphics drivers, and THEN install the latest Nvidia drivers, or did you just swap cards out and install the Nvidia drivers?

If that's what you did, then I'd suggest you download and run the Display driver uninstaller, twice, once for AMD and again for Nvidia, and then do a clean install of the Nvidia drivers.

It's an important distinction that you run it for BOTH AMD and Nvidia, IF you didn't run it for AMD before you first installed the Nvidia card and drivers.

How To - How to perform a CLEAN install of your video card drivers.

Updated 9-19-19 How to do a CLEAN install of your graphics card drivers using the Wagnard tools Display Driver Uninstaller A major issue on many systems is the presence of multiple graphics card drivers or drivers that have been incompletely uninstalled followed by the installation of...

forums.tomshardware.com

I did it exactly as you say...

 

[Darkbreeze]

When you say you have "all drivers checked", what does this mean? Are you relying on Windows to keep drivers updated, or a third party driver application, or are you manually going to the product website page for the motherboard and other connected devices and manually downloading the latest drivers for your hardware?

 

[sizzling]

Have you tried a different HDMI 2.1 cable? This sounds similar to what happened with my first so called 2.1 cable that really couldn’t handle 4K 120Hz.

 

[adaysep91]

When you say you have "all drivers checked", what does this mean? Are you relying on Windows to keep drivers updated, or a third party driver application, or are you manually going to the product website page for the motherboard and other connected devices and manually downloading the latest drivers for your hardware?

I mean before installing the new Nvidia gpu, I did a clean uninstall of the previous amd drivers using the DDU program. I then did a clean install of the Nvidia drivers for the new gpu, making sure to remove the internet so windows doesn't update itself.

 

[adaysep91]

Have you tried a different HDMI 2.1 cable? This sounds similar to what happened with my first so called 2.1 cable that really couldn’t handle 4K 120Hz.

Have you tried a different HDMI 2.1 cable? This sounds similar to what happened with my first so called 2.1 cable that really couldn’t handle 4K 120Hz.

The cable is the same one I was using until now with my previous gpu amd rx 5700 xT, and I had no problem with 4k 120 hz mode. Could it be that with my new gpu, a 3070, the cable is the problem?

 

[sizzling]

The cable is the same one I was using until now with my previous gpu amd rx 5700 xT, and I had no problem with 4k 120 hz mode. Could it be that with my new gpu, a 3070, the cable is the problem?

Can’t say, it would be worth trying

 

[Darkbreeze]

I mean before installing the new Nvidia gpu, I did a clean uninstall of the previous amd drivers using the DDU program. I then did a clean install of the Nvidia drivers for the new gpu, making sure to remove the internet so windows doesn't update itself.

I'm talking about OTHER drivers.

If there are any steps listed here that you have not already done, it would be advisable to do so if for no other reason than to be able to say you've already done it and eliminate that possibility.

First,​

Make sure your system has the MOST recent BIOS version installed. If it does not, then update. This solves a high number of issues even in cases where the release that is newer than yours makes no mention of improving graphics card or other hardware compatibility. They do not list every change they have made when they post a new BIOS release. In cases where you DO already have the latest BIOS version, simply resetting the BIOS as follows has a fairly high percentage chance of effecting a positive change in some cases so it is ALWAYS worth TRYING, at the very least.


BIOS Hard Reset procedure

Power off the unit, switch the PSU off and unplug the PSU cord from either the wall or the power supply.

Remove the motherboard CMOS battery for about three to five minutes. In some cases it may be necessary to remove the graphics card to access the CMOS battery.

During that five minutes while the CMOS battery is out of the motherboard, press the power button on the case, continuously, for 15-30 seconds, in order to deplete any residual charge that might be present in the CMOS circuit. After the five minutes is up, reinstall the CMOS battery making sure to insert it with the correct side up just as it came out.

If you had to remove the graphics card you can now reinstall it, but remember to reconnect your power cables if there were any attached to it as well as your display cable.

Now, plug the power supply cable back in, switch the PSU back on and power up the system. It should display the POST screen and the options to enter CMOS/BIOS setup. Enter the bios setup program and reconfigure the boot settings for either the Windows boot manager or for legacy systems, the drive your OS is installed on if necessary.

Save settings and exit. If the system will POST and boot then you can move forward from there including going back into the bios and configuring any other custom settings you may need to configure such as Memory XMP, A-XMP or D.O.C.P profile settings, custom fan profile settings or other specific settings you may have previously had configured that were wiped out by resetting the CMOS.

In some cases it may be necessary when you go into the BIOS after a reset, to load the Optimal default or Default values and then save settings, to actually get the hardware tables to reset in the boot manager.

It is probably also worth mentioning that for anything that might require an attempt to DO a hard reset in the first place, IF the problem is related to a lack of video signal, it is a GOOD IDEA to try a different type of display as many systems will not work properly for some reason with displayport configurations. It is worth trying HDMI if you are having no display or lack of visual ability to enter the BIOS, or no signal messages.

Trying a different monitor as well, if possible, is also a good idea if there is a lack of display. It happens.

Second,​

Go to the product page for your motherboard or exact laptop model on the device manufacturer's website. Download and install the latest driver versions for the chipset, storage controllers, audio and network adapters. Do not skip installing a newer driver just because you think it is not relevant to the problem you are having. The drivers for one device can often affect ALL other devices and a questionable driver release can cause instability in the OS itself. They don't release new drivers just for fun. If there is a new driver release for a component, there is a good reason for it. The same goes for BIOS updates. When it comes to the chipset drivers, if your motherboard manufacturer lists a chipset driver that is newer than what the chipset developer (Intel or AMD, for our purposes) lists, then use that one. If Intel (Or AMD) shows a chipset driver version that is newer than what is available from the motherboard product page, then use that one. Always use the newest chipset driver that you can get and always use ONLY the chipset drivers available from either the motherboard manufacturer, AMD or Intel.


IF you have other hardware installed or attached to the system that are not a part of the systems covered by the motherboard drivers, then go to the support page for THAT component and check to see if there are newer drivers available for that as well. If there are, install them.

And lAnd last, but not least, if you have never done a CLEAN install of Windows, or have upgraded from an older version to Windows 10, or have been through several spring or fall major Windows updates (OR if you have installed ANY, EVEN REMOTELY QUESTIONABLE SOFTWARE, ESPECIALLY ANYTHING THAT'S BEEN PIRATED), it might be a very good idea to consider doing a clean install of Windows (AND THEN NOT PUT THAT QUESTIONABLE OR PIRATED SOFTWARE BACK ON) if none of these other solutions has helped. IF you are using a Windows installation from a previous system and you didn't do a clean install of Windows after building the new system, then it's 99.99% likely that you NEED to do a CLEAN install before trying any other solutions.


How to do a CLEAN installation of Windows 10, the RIGHT way​

 

[adaysep91]

I'm talking about OTHER drivers.

If there are any steps listed here that you have not already done, it would be advisable to do so if for no other reason than to be able to say you've already done it and eliminate that possibility.

First,​

Make sure your system has the MOST recent BIOS version installed. If it does not, then update. This solves a high number of issues even in cases where the release that is newer than yours makes no mention of improving graphics card or other hardware compatibility. They do not list every change they have made when they post a new BIOS release. In cases where you DO already have the latest BIOS version, simply resetting the BIOS as follows has a fairly high percentage chance of effecting a positive change in some cases so it is ALWAYS worth TRYING, at the very least.


BIOS Hard Reset procedure

Power off the unit, switch the PSU off and unplug the PSU cord from either the wall or the power supply.

Remove the motherboard CMOS battery for about three to five minutes. In some cases it may be necessary to remove the graphics card to access the CMOS battery.

During that five minutes while the CMOS battery is out of the motherboard, press the power button on the case, continuously, for 15-30 seconds, in order to deplete any residual charge that might be present in the CMOS circuit. After the five minutes is up, reinstall the CMOS battery making sure to insert it with the correct side up just as it came out.

If you had to remove the graphics card you can now reinstall it, but remember to reconnect your power cables if there were any attached to it as well as your display cable.

Now, plug the power supply cable back in, switch the PSU back on and power up the system. It should display the POST screen and the options to enter CMOS/BIOS setup. Enter the bios setup program and reconfigure the boot settings for either the Windows boot manager or for legacy systems, the drive your OS is installed on if necessary.

Save settings and exit. If the system will POST and boot then you can move forward from there including going back into the bios and configuring any other custom settings you may need to configure such as Memory XMP, A-XMP or D.O.C.P profile settings, custom fan profile settings or other specific settings you may have previously had configured that were wiped out by resetting the CMOS.

In some cases it may be necessary when you go into the BIOS after a reset, to load the Optimal default or Default values and then save settings, to actually get the hardware tables to reset in the boot manager.

It is probably also worth mentioning that for anything that might require an attempt to DO a hard reset in the first place, IF the problem is related to a lack of video signal, it is a GOOD IDEA to try a different type of display as many systems will not work properly for some reason with displayport configurations. It is worth trying HDMI if you are having no display or lack of visual ability to enter the BIOS, or no signal messages.

Trying a different monitor as well, if possible, is also a good idea if there is a lack of display. It happens.

Second,​

Go to the product page for your motherboard or exact laptop model on the device manufacturer's website. Download and install the latest driver versions for the chipset, storage controllers, audio and network adapters. Do not skip installing a newer driver just because you think it is not relevant to the problem you are having. The drivers for one device can often affect ALL other devices and a questionable driver release can cause instability in the OS itself. They don't release new drivers just for fun. If there is a new driver release for a component, there is a good reason for it. The same goes for BIOS updates. When it comes to the chipset drivers, if your motherboard manufacturer lists a chipset driver that is newer than what the chipset developer (Intel or AMD, for our purposes) lists, then use that one. If Intel (Or AMD) shows a chipset driver version that is newer than what is available from the motherboard product page, then use that one. Always use the newest chipset driver that you can get and always use ONLY the chipset drivers available from either the motherboard manufacturer, AMD or Intel.


IF you have other hardware installed or attached to the system that are not a part of the systems covered by the motherboard drivers, then go to the support page for THAT component and check to see if there are newer drivers available for that as well. If there are, install them.

And lAnd last, but not least, if you have never done a CLEAN install of Windows, or have upgraded from an older version to Windows 10, or have been through several spring or fall major Windows updates (OR if you have installed ANY, EVEN REMOTELY QUESTIONABLE SOFTWARE, ESPECIALLY ANYTHING THAT'S BEEN PIRATED), it might be a very good idea to consider doing a clean install of Windows (AND THEN NOT PUT THAT QUESTIONABLE OR PIRATED SOFTWARE BACK ON) if none of these other solutions has helped. IF you are using a Windows installation from a previous system and you didn't do a clean install of Windows after building the new system, then it's 99.99% likely that you NEED to do a CLEAN install before trying any other solutions.


How to do a CLEAN installation of Windows 10, the RIGHT way​

Thank you very much i will try all of u said. Thanks

 

[gamerk316]

The cable is the same one I was using until now with my previous gpu amd rx 5700 xT, and I had no problem with 4k 120 hz mode. Could it be that with my new gpu, a 3070, the cable is the problem?

It's possible. Early HDMI 2.1 cables had issues.

I suspect I know the problem though: The Q90T only supports HDMI 2.1 on HDMI 4. Are you sure you are using that specific input?

 

[adaysep91]

I am 100% sure I am using the correct hdmi port, which as you rightly say is HDMI 4 on the Samsung q90t. So I doubt that's the problem.. xD. I have yet to test with another cable to see if that is the problem, although as I say above, with my previous graphics the same cable did work fine at 4k 120 hz. Regards.

It's possible. Early HDMI 2.1 cables had issues.

I suspect I know the problem though: The Q90T only supports HDMI 2.1 on HDMI 4. Are you sure you are using that specific input?

 

[Darkbreeze]

I'm very doubtful that it's the cable if it worked as expected with the prior graphics card. It does not stand to reason that it would work with one card and not another one if it was the cable. In your Nvidia control panel, check to see if you have G-sync (Or any kind of sync anywhere) enabled as very few TVs support sync modes. This is something that could be different between cards as I have sometimes seen issues when G-sync is enabled and a TV is being used as the display. Probably not, but running out of ideas.

 

[adaysep91]

I'm very doubtful that it's the cable if it worked as expected with the prior graphics card. It does not stand to reason that it would work with one card and not another one if it was the cable. In your Nvidia control panel, check to see if you have G-sync (Or any kind of sync anywhere) enabled as very few TVs support sync modes. This is something that could be different between cards as I have sometimes seen issues when G-sync is enabled and a TV is being used as the display. Probably not, but running out of ideas.

Hi. The gsync is enabled in the nvidia panel. I have also tried disabling it and all possible combinations, but nothing works and I am out of ideas too. I hope some enlightened person can find the solution.

 

[Darkbreeze]

I have reached out in the hopes that some enlightened person amongst the ambassadors and moderators will chime in here if they have any other ideas.

 

[adaysep91]

I have reached out in the hopes that some enlightened person amongst the ambassadors and moderators will chime in here if they have any other ideas.

Thank u very much.

 

[Rogue Leader]

One thing to note. NO RX 5700XT supports 4k/120hz over HDMI, only DisplayPort. So very likely you did have this problem, it just wasn't showing up.

Since you haven't swapped the cable yet under that assumption that it was working before, lets go back to that.

 

[gamerk316]

Ok, if your using the correct port, there a few other things I can think to try:

1: You can try setting the name of the input to "PC". This shouldn't matter, but is still good practice when connecting a TV to a PC.

2: Early HDMI 2.1 cables often had issues when pushed above HDMI 2.0 bandwidth. As a test, you can try setting for 4k120 @ 4:2:0 chromo w/o HDR; that would simulate the most HDMI 2.0 can handle. If that works without issue, then I would seriously suspect the cable just isn't capable of HDMI 2.1 bandwidth. Over at hardforum we ran into a similar thing where a lot of people who brought HDMI 2.1 cables ended up with duds.

3: I'm going to assume you've already done this, but make sure the GPU is running the latest drivers and TV the latest firmware. The Q90T did have some teething issues with HDMI 2.1, so if you're running an older firmware that could be a problem.

 

[adaysep91]

One thing to note. NO RX 5700XT supports 4k/120hz over HDMI, only DisplayPort. So very likely you did have this problem, it just wasn't showing up.

Since you haven't swapped the cable yet under that assumption that it was working before, lets go back to that.

So how is it possible that connecting the 5700 xt with hdmi to the tv and activating in windows the screen in 4k and 120 hz did not give me problem? Can it be then that changing the cable works? I have the display for my main monitor which is an AOC at 2K resolution. But, on my tv, I have no display port available. I understand that the rtx 3070 does support 120 hz and 4k via hdmi port, right? Regards

 

[Rogue Leader]

So how is it possible that connecting the 5700 xt with hdmi to the tv and activating in windows the screen in 4k and 120 hz did not give me problem? Can it be then that changing the cable works? I have the display for my main monitor which is an AOC at 2K resolution. But, on my tv, I have no display port available. I understand that the rtx 3070 does support 120 hz and 4k via hdmi port, right? Regards

The 3070 does, the 5700 XT does not. I had one and I remember this specifically about it, and I then just confirmed it now. You may have set it to 4k/120 but it wasn't outputting at that. If the port is incapable it simply doesn't do it.

I think theres a possibility the cable will resolve the issue, but take a look at #2 of what @gamerk316 said above, this may work to resolve the issue and confirm that you need a better cable.

 

[drivinfast247]

Not sure if it's been covered already but you may need to enable 120hz mode(enhanced?) for that particular HDMI port on the TV

 

[adaysep91]

Ok, if your using the correct port, there a few other things I can think to try:

1: You can try setting the name of the input to "PC". This shouldn't matter, but is still good practice when connecting a TV to a PC.

2: Early HDMI 2.1 cables often had issues when pushed above HDMI 2.0 bandwidth. As a test, you can try setting for 4k120 @ 4:2:0 chromo w/o HDR; that would simulate the most HDMI 2.0 can handle. If that works without issue, then I would seriously suspect the cable just isn't capable of HDMI 2.1 bandwidth. Over at hardforum we ran into a similar thing where a lot of people who brought HDMI 2.1 cables ended up with duds.

3: I'm going to assume you've already done this, but make sure the GPU is running the latest drivers and TV the latest firmware. The Q90T did have some teething issues with HDMI 2.1, so if you're running an older firmware that could be a problem.

Hi, first of all, thank you for taking the time to help me. I will answer you in parts to the 3 points you have indicated:

1. I have already tried putting the name PC in the HDMI label. In fact, I have tested in both PC mode and game console mode, but the problem persists.
2. I don't currently use HDR mode, but I don't know how to change what you say about 4:2:0 .... I'll attach some screenshots of my nvidia configuration in case it helps.

3. I have everything updated and checked.

Thanks

PD:
the first image is the configuration as I have it now so that it does not fail (2K-120 hz).

the second image is the other options, as you can see, in the native mode does not give me the option to 120 hz, and if I check the 4k resolution box but the one that does not put native in parentheses, there does appear the option of 120 hz, but that's when it gives problems.

I hope this helps a little.

https://ibb.co/R4fZbst

https://ibb.co/k1m1bz4

 

[adaysep91]

Not sure if it's been covered already but you may need to enable 120hz mode(enhanced?) for that particular HDMI port on the TV

I have it enabled, the hdmi signal extended from the port I use, but thanks for the idea

 

[adaysep91]

The 3070 does, the 5700 XT does not. I had one and I remember this specifically about it, and I then just confirmed it now. You may have set it to 4k/120 but it wasn't outputting at that. If the port is incapable it simply doesn't do it.

I think theres a possibility the cable will resolve the issue, but take a look at #2 of what @gamerk316 said above, this may work to resolve the issue and confirm that you need a better cable.

I'll try another cable and see if it works out

I also want to try step 2 as mentioned by my colleague, but I don't really know how to do that.