There is nothing more frustrating than acquiring a product inaccessible to others and that when you are going to start it with problems. This happens to many users, who complain about a rare error today: the NVRAM.
AMD RX 6800 and RX 6800 XT, NVRAM problems and QCODE 92 error?
Let’s describe the situation: we come up with our brand new AMD RX 6800, we remove our old graphics card, we click on this new one based on RDNA 2.0, we connect its power supply, the monitor and we turn on the PC with maximum hype, But…. Either it does not give an image, or it stays on the loading screen.
The frustration appears, there is no way to pass BIOS POST and for those who have QCODE on their motherboard hopefully they will have some indication of the error they are experiencing but those who do not can not panic if there is no picture.
The error is described as a problem with NVRAM and it is usually detected as error 92 in said QCODE, although this may vary from manufacturer to manufacturer. What to do? First of all, don’t panic, because it is not a problem with the graphics card, the error is generated by the PC due to a setting that we have configured and that for some reason that we still do not understand not does not get along with this new RX 6000 series with RDNA 2.0.
The problem comes from the BIOS / UEFI CSM
Oddly enough, and from the same manufacturer, there is a curiosity that, although it is configured equally on different platforms, the error appears only on Intel platforms, while on AMD it does not does not occur in any case (or at least it was not reported, nor we could reproduce it)
Everything has to do with the CSM or the compatibility module in said BIOS / UEFI, but to solve it we will have to click on the old GPU again, because from the new one we will not be able to access because it blocks the POST . Once done, we will enter BIOS / UEFI and go to the system boot menu, where we will need to look for the CSM option as shown in the image below.
Once in this section we will have to select the Legacy option, because apparently this is where GPU compatibility with the BIOS lies, possibly due to something to do with the Infinity Cache of these new RDNA 2.0s. , because with RDNA 1.0 no there were problems.
Just save the changes, click on the RX 6800 or RX 6800 XT again and verify that it now goes directly into the operating system. We have to say that this has not been fixed with the BIOS versions for the latest GPUs, so this is something that AMD or motherboard manufacturers should be working on to fix it as soon as possible because maintaining CSM activated today does not allow it. makes too much sense for the vast majority of PCs.