Graphics Cards

[bjaurelio]

I recently upgraded to a 7900XT. I posted recently about the issues with Amazon not providing me with a Starfield code. Supposedly, it is supposed to come tomorrow. I decided to install the card tonight. However, I am unable to get anything above 60Hz or 8 bit color. I am connected to an LG C9 OLED TV and using the same HDMI cable that I used to play at 4K 120 with 10 bit color on my RTX 3080 that I am upgrading from. Does anyone know what could be locking me out of this? When I try to create a custom resolution for 120 Hz, the Adrenaline software tells me that it is not compatible with my display.

Here's a comparison for each card in Windows, since that is the same interface across GPU brands.

[cpurpe91]

Have you tried uninstalling the drivers with DDU and reinstalling directly from AMD?

[bjaurelio]

I installed directly from AMD just now when I put the new card in my PC. I can try uninstalling the drivers and reinstalling them. 

[cpurpe91]

Did you uninstall the Nvidia drivers?

[bjaurelio]

I have uninstalled the Nvidia drivers. I have used DDU multiple times going back and forth between the cards. The Nvidia card consistently allows 4k120 and 10 bit color. The AMD card is limited to 8 bits and 60Hz. If I try to select 10 bits, it won't allow it. You can also see the Adrenaline software is not reporting the same VRR range as what is shown when I open CRU without making any changes. I've tried adding a 4K 120 Hz resolution in there, but it does nothing.

[cpurpe91]

I have looked in several other forums and I, personally, can't find anything about this bug. Have you tried older drivers? 

[bjaurelio]

I haven't tried older drivers. I am finding out through AVS forum that my TV is not reporting the correct EDID information. Others on that forum are hesitant to say the TV is incorrectly reporting, but that's all I can conclude when the raw data of the EDID does not include information it should have and is different from what others are reporting. With my Nvidia card, I could bypass this with CRU. However, it appears the AMD drivers rely solely on live EDID information from the TV rather than the registry. Either that, or it has its own separate location it stores the EDID that CRU is not changing.

[cpurpe91]

I have heard that CRU has problems with the RX 7000 series as well. Does your TV support display port?

[Qoojo]

EDID overrides did not work until driver 23.7.1 or 23.7.2 for 7900 series. I used CRU with latest driver 23.7.2, and it works now for 7900 xtx.

[Matt_AMD]

The 7900 XT has a HDMI 2.1 connection that has the full 48Gbps bandwidth available to it. Therefore, the card is capable of driving 4K120HZ at 10 bit colour on this display. 

One thing that could cause this limiation is the HDMI cable. Especially if said cable is not HDMI 2.1 certified.

What 7900 XTX are you using?

I am running a 7900 XTX on a similar TV, (LG CX OLED 4K120HZ 10-Bit) with a certified HDMI 2.1 cable.

[bjaurelio]

I'm using the Hellhound 7900XT. I ended up finding an issue in the TV service menu where FRL was disabled. After enabling it, I now have 4k120.