4g decoding does not turn on

[amirr1]

I want to improve the performance of my PC and enable 4g decoding with resizebur support, my video card is colorful rtx 4060 8 gb, Gigabyte Technology Co., Ltd. A520M DS3H V2, 16 gb ram, amd ryzen 5 5500.

I enable 4G decoding and resizebur support in the BIOS, but when I boot into Windows GPU-Z shows this

 

[FreedomEclipse]

Try disabling CSM option in your bios. Some boards might require CSM to be turned off to get it working

 

[amirr1]

Попробуйте отключить опцию CSM в биосе. На некоторых платах может потребоваться выключение CSM, чтобы он заработал.

Already disabled it

 

[oobymach]

Does your mobo have latest bios installed? Can you fill in system specs (click your username on the top right and then system specs).

 

[amirr1]

Does your mobo have latest bios installed? Can you fill in system specs (click your username on the top right and then system specs).

Bios is the latest version, I checked it a hundred times. Characteristics added

 

[FreedomEclipse]

Check Nvidia control panel and see what it says.

then maybe run an older (or newer) version of GPU-Z. Its not uncommon for certain versions of GPU-Z to be slightly buggy and not give correct readouts.

If this doesnt work then Im honestly not sure what else I can suggest. Maybe try a clean driver install. Run DDU and install the latest drivers for your GPu.

 

[amirr1]

Check Nvidia control panel and see what it says.

View attachment 336014

then maybe run an older (or newer) version of GPU-Z. Its not uncommon for certain versions of GPU-Z to be slightly buggy and not give correct readouts.

If this doesnt work then Im honestly not sure what else I can suggest. Maybe try a clean driver install. Run DDU and install the latest drivers for your GPu.

Resizable BAR - no, it won't turn on until 4G decoding works, that's the problem

 

[oobymach]

Try setting pcie speed to gen 3 in bios, cpu may be limited to gen 3 pcie.

I can confirm that ReBAR works with the Ryzen 5500 and Asrock B450M Pro 4 OG version albeit at PCIe 3.0 speeds (which is a CPU limitation). However, most of what I read suggests that there is a negligible difference between PCIe 3 and 4 for this tier of cards. Enabling ReBAR is more important.

Source

 

[lawood]

This is normal for gigabyte.

You need to refflash the bios to be able to turn on res bar and then pray it stays turned on after you change the bios.

They are a clueless company and i'll never ever buy from them again.

After 1.2.0.7 this issue is present in ALL b550 boards at least. You are better off hiring a monkey to code a new bios for you than relying on gigabyte.

 

[amirr1]

Thanks for the answer, I don’t know how to flash the BIOS, this means installing the latest version, I just already have it installed

 

[lawood]

You need to re flash the bios, meaning you need to flash the same bios you have to get the function back.

This will solve it mostly but don't change any other bios settings, something triggers this bug again if you do. I can't say which settings because i won't do the testing for them.

But yeah, this is a known bug they just won't or can't fix, wouldnt surprise me if it was the latter.

Clearing cmos doesn't work, resetting to defaults doesn't work, the only thing that works is re flashing the bios. This happens on every single b550 gb board.