B450Pro4, SoundBlaster Z - problems after new BIOS

Hey. Hey,
A few days ago I replaced the CPU (replaced R5 2600 with R5 5500). To support the new CPU it was necessary to update the BIOS.

BIOS P3.50 with no problem. After the update to P5.00 and another update to P5.60 I have a problem with the Sound Blaster Z sound card.

The sound card randomly switches channels. Left to right, right to center and so on.

At the same time, if it plays on the 5.1 speakers, it crackles and rattles.

I searched for a description of the problem and came across a completely identical description of the trouble after a BIOS update, but with X570 chipsets. I didn't found any thread with B450 chipset or boards from AsRock.But I'm having the exact same problems.

As mentioned on the MSI forum, https://forum-en.msi.com/index.php?threads/sound-blaster-z-has-weird-behaviour-after-updating-bios-x570-gaming-edge-wifi.325223/page-2#post-1961373 , Creative has investigated the problem and found that the trouble is because the new BIOSes have enabled support for some "10-bit Tag Field".

For some boards I have seen pictures that this option can be turned off in the BIOS. I could not find such an option in the ASRock BIOS.

Does anyone have a similar experience or advice on what settings to make on the ASRock board to get the card working fine? I don't want to get rid of it, but after update the BIOS sound card is obviously unusable. CHange PCIe slot didn't help.

Ok, I did it. If I will get some solution, i will inform you or another users.

Hello,

unfortunately, the problem I mentioned could not be solved.

First of all I would like to highlight ASRock support. They worked with me to identify and solve the problem, they were interested in my problems, we tried several different settings, etc. I am very pleasantly surprised by the great way ASRock support handled it.

Unfortunately, however, it has come to the point that the probable cause of the problem lies in the AGESA microcode, i.e. changes made by AMD, where ASROck does not have access. So my incompatibility problem, which was caused by a BIOS update, cannot be solved (and the old BIOS cannot be used because I installed a new CPU).