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ASUS Xonar cards and AMD Ryzen AM4 motherboards compatibility report

Some AMD AM4 motherboards (Ryzen CPUs) have some compatibility issues with ASUS Xonar sound cards. These issues will manifest as system rebooting or showing a BSOD when installing Xonar drivers or when changing various Xonar settings such as switching from speakers to front panel headphones. Below you have a list that I've compiled with user reported compatibility status of their Xonar card and AM4 motherboard. The list will be periodically updated.

Boards that are listed as having compatibility issues with specific Xonar sound cards may also have issues with other PCI/PCIe cards like other sound cards, network cards, RAID cards, etc.

Note that the compatibility status may vary depending on BIOS version, on installed CPU (#1), it may vary depending on which Xonar card do you have, if it's a PCIe or PCI card, it may be affected by whether the Xonar card was plugged in a PCIe slot that is connected to the chipset or one that is connected to the CPU (1st and 2nd x16 slots on X370, X470, X570 motherboards). Particularly affected by these compatibility issues seem to be the Xonar Essence STX II cards, which have an ASMedia PCI-to-PCIe bridge instead of the PLX PCI-to-PCIe bridge that the rest of PCIe Xonar cards have. Xonar D2X looks like another card that's particularly affected. So a motherboard on which a STX II or a D2X card has problems, might actually work with a different Xonar card.

The issue caused by BIOSes with AGESA 1.0.0.4B where systems are not booting while the Xonar or other PCI-e card are plugged in the motherboard is a different issue than the compatibility issues described above and which are the main subject of this page. This issue is treated separately in the "BIOSes with AGESA 1.0.0.4B caution" section and it is not reflected in the entries in the compatibility list.


Contents:

  1. Compatibility status list
  2. Possible solutions for BSOD and restart issues
  3. How to verify if it's stable
  4. Why it happens and what else you can do
  5. Other info & ASUS's response about these compatibility issues
  6. BIOS updates
Page updates

  • 25 Oct 2020: Added STX II with MSI MAG B550 Tomahawk, STX II with AsRock X370 Taichi.
  • 04 Oct 2020: Added STX II with ASUS X570 Crosshair VIII Hero (Wi-fi), another report that works with possible solution 9. Added DX with ASUS Prime X570-P.
  • 01 Sep 2020: Updated STX II with MSI MEG X570 ACE. Added DX with ASUS X370 ROG CROSSHAIR VI HERO, Xense with MSI B450M Mortar Titanium, STX II with MSI MAG X570 Tomahawk WiFi, STX II with MSI B450 Tomahawk Max.
  • 19 Jul 2020: Added possible solution 9. Updated "Why it happens and what else you can do". Updated BIOS updates section. Added
    DGX with ASUS Prime X370-A, STX II with MSI MEG X570 ACE, STX II with ASRock X470 Taichi, DGX with Gigabyte X570 AORUS ELITE WIFI, STX II with ASUS ROG Strix X570-F GAMING, STX II with ASUS ROG CROSSHAIR VII HERO X470, STX II with Gigabyte X570 Aorus Xtreme, STX II with ASRock B450 Pro4, STX II with Gigabyte B550 Aorus Pro, STX II with ASUS TUF B550 Gaming Plus, DX with MSI B450 Tomahawk.
  • 14 May 2020: Updated "Why it happens and what else you can do". Added possible solution 8. Added other PCIe cards that are not based on CMI8788 audio chipset: AIM SC808 with Asrock X470 Taichi and Xonar Phoebus with ASUS ROG Strix X570-E Gaming. Added STX with Gigabyte X570 AORUS ELITE, STX II with MSI B450 Tomahawk Max, STX II with ASRock X570 Phantom Gaming 4, STX II with MSI MEG X570 ACE, D2X with ASUS X370 ROG Crosshair VI Hero, STX II with ASRock X570 Taichi, STX II with ASUS Prime B450-Plus, D2X with MSI B450 GAMING PLUS MAX.
  • 08 Apr 2020: Added "What else you can do" and "How to verify it is stable" sections. Added STX II with ASRock X470 Taichi, STX II with MSI MEG X570 ACE, DS with Gigabyte GA-A320M-HD2, DSX with Gigabyte B450 Aorus M, D2X with MSI MPG X570 Gaming Plus, STX with Gigabyte B450 Aorus Elite, DSX with ASUS TUF Gaming X570-Plus, STX II with ASUS TUF Gaming X570-Plus.
  • 13 Mar 2020: Updated "BIOSes with AGESA 1.0.0.4B caution" section. Added DGX with MSI B450 Tomahawk Max, D2X with ASUS PRIME X570 PRO, D2X with ASUS ROG STRIX X570-E Gaming.
  • 02 Mar 2020: Added DSX with ASUS PRIME B350-PLUS, STX II with Gigabyte X570 Aorus Xtreme.
  • 19 Feb 2020: Updated STX II with MSI B450 Gaming Pro Carbon AC, added STX with MSI B450 Gaming Pro Carbon AC, DX with ASUS Prime X570 Pro, D1 with ASUS PRIME X370-A, DX with Gigabyte GA-AB350-Gaming, removed DSX with Asus Prime x570 Pro because of typo.
  • 31 Jan 2020: Added D2X with ASUS ROG Strix X570-E.
  • 24 Jan 2020: Added STX II with MSI B450 Tomahawk, STX with MSI X370 Krait Gaming.
  • 15 Jan 2020: Added DSX with ASUS TUF Gaming X570-Plus, STX II with Asus ROG Strix X570-F Gaming, STX II with Gigabyte X470 AORUS ULTRA GAMING, STX II with ASUS Prime B450-Plus.
  • 10 Jan 2020: Added D2X with MSI X570 Gaming Edge Wifi, D2X with Asus Prime X570-P.
  • 04 Jan 2020: Added STX with Gigabyte x470 Aorus Ultra Gaming.
  • 13 Dec 2019: Updated "Possible solutions for BSOD and restart issues" section and added possible solution "7. Disable Xonar's recording devices".
  • 11 Dec 2019: Added STX with MSI Tomahawk B450 Max.
  • 09 Dec 2019: Added STX II with MSI MEG X570 ACE, DX with ASRock X570 Steel Legend.
  • 08 Dec 2019: Added STX II with ASUS TUF X570-Plus (Wi-Fi).
  • 06 Dec 2019: Updated "BIOSes with AGESA 1.0.0.4B caution" section. Added STX II with ASUS Pro WS X570-ACE, DX with ASUS Prime X570-P, STX II with ASUS X570 TUF GAMING X570-PLUS (WI-FI), STX II with ASRock X470 Taichi, DSX with ASUS Prime X570-Pro.
  • 26 Nov 2019: Updated "BIOSes with AGESA 1.0.0.4B caution" section. Added DX with Gigabyte B450 M, STX II with MSI X570-A PRO, STX with ASUS Prime X570-P.
  • 23 Nov 2019: Updated "BIOSes with AGESA 1.0.0.4B caution" section.
  • 20 Nov 2019: Updated "BIOSes with AGESA 1.0.0.4B caution" section. Added D2X with Gigabyte X570 Aorus Master, STX with ASUS Prime X570 PRO, STX II with ASUS Prime X570 PRO, DX with ASUS X570 TUF Gaming Plus, DGX with ASRock X570 Taichi, DGX with ASUS X570 TUF Gaming Plus .
  • 16 Nov 2019: Added DX with MSI MEG X570 ACE, STX with MSI MPG X570 Gaming Plus, STX with ASUS Prime X570 Pro.
  • 13 Nov 2019: Added STX II with Gigabyte X570 Aorus Elite, D2X with ASUS X570 ROG Crosshair VIII Hero, DX with MSI X370 Gaming Plus, DX with ASUS Pro WS X570-ACE, DX with ASUS Prime X570-P.
  • 9 Nov 2019: Added D2X with ASUS X570 ROG Crosshair VIII Hero.
  • 8 Nov 2019: Added DG with ASUS X370 Prime Pro, DGX with Gigabyte B450 Auros M, STX II with Asus ROG Strix x570-F, DX with Asus Prime X570 Pro, STX with ASUS X570 ROG Crosshair VIII Hero, STX II with ROG Crosshair VIII Hero (Wi-Fi), STX II with TUF Gaming X570-Plus (Wi-Fi), STX with TUF Gaming X570-Plus (Wi-Fi), STX with Gigabyte X570 Aorus PRO, DX with Gigabyte X570 Aorus Pro Wifi, STX with Gigabyte X570 Aorus Master, D2X with Gigabyte X570 Aorus Master, DGX with Gigabyte X570 Aorus Elite, STX with Gigabyte X570 Aorus Elite, D2X with ASRock X570M Pro4.
  • 5 Nov 2019: Added DX with Gigabyte X570 Aorus Master.
  • 3 Nov 2019: Added "BIOSes with AGESA 1.0.0.4B caution" section. Added DX with Gigabyte X570 Aorus Pro.
  • 31 Oct 2019: Added DGX with Biostar X570GT8 and DX with MSI B350 Tomahawk.
  • 24 Oct 2019: Added D2X with ASUS TUF GAMING X570-PLUS (WI-FI).
  • 18 Oct 2019: Added DSX with MSI B450 Tomahawk, STX II with MSI X570-A PRO, STX II with MSI B450 Tomahawk.
  • 08 Oct 2019: Added STX II with Gigabyte X570 Aorus Xtreme.
  • 29 Sep 2019: Added D2X with ASUS ROG STRIX X570-E Gaming.
  • 28 Sep 2019: Added STX II with ASUS Prime X570-P.
  • 26 Sep 2019: Added D2X with ASUS PRIME X570-P.
  • 21 Sep 2019: Added D2X with Gigabyte X470 AORUS ULTRA GAMING and STX with ASUS ROG Strix X470 F Gaming entries.
  • 17 Sep 2019: Added STX with ASUS ROG Strix X570-F Gaming entry.
  • 15 Sep 2019: Added DX with Gigabyte X470 Gaming 7 entry.
  • 13 Sep 2019: Added DGX with ASUS X370 ROG entry.
  • 11 Sep 2019: Updated intro and "Other info" sections. Added STX with MSI B350 and D2X with ASRock Fatal1ty X470 Gaming K4 entries. Updated "Possible solutions" with another possible solution (no. 3).
  • 02 Sep 2019: Updated table with Gigabyte X570 Aorus Master and ASUS X570 ROG Crosshair VIII Hero. Updated "Possible solutions" with another possible solution (no. 6).
  • 25 Aug 2019: Updated table with additional entries from ASUS ROG forum.
  • : Article published.

Compatibility status list (for system resets and BSODs issues)

Audio cardMotherboardWorks[works with]
Doesn't work[works with]
 
Xonar Essence STX II
ASRock X570 Taichi#1
ASRock X570 Phantom Gaming 4#1
ASRock X470 Taichi#1?#1, #2[9]
ASRock B450 Pro4#1
ASRock X370 Taichi#1#1
ASRock X370 Killer SLI#1
ASRock AB350 Pro4#1
ASUS X570 ROG Crosshair VIII Hero (Wi-Fi)#1[9]
ASUS X570 ROG Crosshair VIII Hero#1, #2
ASUS Prime X570-P#1
ASUS Prime X570 PRO#1?
ASUS Pro WS X570-ACE#1?
ASUS ROG Strix X570-F gaming#1[3]#1, #2?
ASUS TUF Gaming X570-Plus#1?
ASUS TUF Gaming X570-Plus (Wi-Fi)#1?#1, #2
ASUS TUF Gaming B550-Plus#1?
ASUS Prime X470-Pro#1?
ASUS TUF X470-Plus Gaming#1
ASUS ROG CROSSHAIR VII HERO X470#1
ASUS Prime B450-Plus#1, #2#1?, #2
ASUS X370 ROG CROSSHAIR VI HERO#1, #2, #3, #4
ASUS X370 Prime Pro#1
ASUS X370 Prime#1
ASUS X370 Pro#1
ASUS PRIME B350-PLUS#1
ASUS ROG STRIX B350F#1
Gigabyte X570 Aorus Elite#1
Gigabyte X570 Aorus Master#1[7]
Gigabyte X570 Aorus Xtreme#1#1, #2?, #3?
Gigabyte B550 Aorus Pro#1?
Gigabyte X470 Aorus Gaming 7#1
Gigabyte X470 AORUS ULTRA GAMING#1
Gigabyte B450 Aorus M#1
MSI MAG X570 Tomahawk WiFi#1?
MSI MEG X570 ACE#1, #2[3]#1[3]+[4], #2[3]+[4]
MSI X570-A PRO#1#1
MSI MAG B550 Tomahawk#1
MSI B450 Gaming Pro Carbon AC#1
MSI B450 Tomahawk Max#1#1
MSI B450 Tomahawk#1#1?
Xonar Essence STXASUS Prime X570-P#1
ASUS Prime X570-Pro#1*, #2
ASUS X570 ROG Crosshair VIII Hero (Wi-Fi)#1
ASUS ROG Strix X570-F Gaming#1
ASUS TUF Gaming X570-Plus (Wi-Fi)#1
ASUS Prime X470-Pro#1
ASUS ROG Strix X470 F Gaming#1
Gigabyte X570 Aorus Elite#1*, #2
Gigabyte X570 Aorus Master#1*
Gigabyte X570 Aorus Pro#1*
Gigabyte X470 Aorus Ultra Gaming#1
Gigabyte B450 Aorus Elite#1?
MSI MPG X570 Gaming Plus#1
MSI Tomahawk B450 Max#1
MSI B450 Gaming Pro Carbon AC#1
MSI X370 Krait Gaming#1
MSI B350 Tomahawk#1
Xonar Essence STASUS Prime B350 Plus#1, #2#1, #2
MSI B350 Tomahawk#1
ASUS Prime X370-a#1
Xonar D1ASUS Prime X370-A#1?
Xonar D2X

 

ASRock X570M Pro4#1[3]?
ASRock Fatal1ty X470 Gaming K4#1[3]
ASRock Fatal1ty B450 Gaming K4#1
ASUS PRIME X570-P#1?#1
ASUS PRIME X570 PRO#1
ASUS X570 ROG Crosshair VIII Hero#1, #2?
ASUS ROG STRIX X570-E Gaming#1[4], #2[3]+[4], #3?, #4?
ASUS TUF GAMING X570-PLUS (WI-FI)#1
ASUS X370 ROG Crosshair VI Hero#1[8]
Gigabyte X570 Aorus Master#1*, #2
Gigabyte X470 Aorus ULTRA GAMING#1
MSI MPG X570 Gaming Edge Wifi#1?
MSI MPG X570 Gaming Plus#1[3]
MSI B450 GAMING PLUS MAX#1
Xonar DG w/ ASMedia
1083 PCIe-to-PCI bridge
ASUS X370 Prime Pro#1
Xonar DGXASRock X570 Taichi#1
ASRock AB350M Pro 4#1
ASUS TUF Gaming X570-Plus#1
ASUS X370 ROG CROSSHAIR VI HERO#1
ASUS Prime X370-A#1
Biostar X570GT8#1
Gigabyte X570 Aorus Elite#1*, #2
Gigabyte B450 Aorus M#1
MSI B450 Tomahawk Max#1
Xonar DSGigabyte GA-A320M-HD2#1[1]+[7]
Xonar DSXASUS TUF Gaming X570-Plus#1, #2?
ASUS PRIME B350-PLUS#1
Gigabyte B450 Aorus M#1
MSI X570 Meg Ace#1
MSI B450 Tomahawk#1
Xonar DXASUS Prime X570-P#1, #2
ASUS Prime X570-Pro#1, #2
ASUS Pro WS X570-ACE#1
ASUS TUF Gaming X570-Plus#1
ASUS X370 ROG CROSSHAIR VI HERO#1
ASRock X570 Steel Legend#1
ASRock Fatal1ty B450 Gaming K4#1
Gigabyte X570 Aorus Master#1
Gigabyte X570 Aorus Pro#1
Gigabyte X470 Aorus Gaming 7#1
Gigabyte B450 M#1
Gigabyte GA-AB350-Gaming#1?
MSI MEG X570 ACE#1
MSI B450 Tomahawk#1
MSI X370 Gaming Plus#1
MSI B350 Tomahawk#1
Xonar XenseB450M MORTAR TITANIUM#1
Other
Xonar PhoebusASUS ROG Strix X570-E Gaming#1[4]
AIM SC808ASRock X470 Taichi#1

List will be periodically updated. If you have a Xonar PCI/PCIe card and a AMD Ryzen AM4 motherboard leave a comment below with the compatibility status.

  • * Link mentions not working, but that's only with BIOSes with AGESA 1.0.0.4B.
  • ? Asked more details or unclear situation.
  • [1] Works with a new BIOS update. BIOS may not be available publicly.
  • [3] Works with possible solution 3 (PCIe slot speed to Gen3/2/1). Usually I place these entries under "Doesn't work" because they involve lowering the PCIe speed sometimes considerably and that can affect the speed of other devices (video card, m.2 storage devices, USB 3.1).
  • [4] Works with possible solution 4 (different PCIe slot).
  • [7] Works with possible solution 7 (disabled Xonar's recording devices).
  • [8] Works with possible solution 8 (m.2 to PCIe adapter). I place these entries under "Doesn't work" because they involve sacrificing the m.2 slot and it requires significant work and additional purchases.
  • [9] Works with possible solution 9 (PCIe USB riser).

Possible solutions for BSOD and restart issues

Here are some things you could do that could fix or workaround the compatibility issues. These solutions are not mutually exclusive, than means sometimes a combination of multiple solutions will make it work.

1. Update the motherboard BIOS to the latest version

But avoid early AGESA 1.0.0.4B BIOS versions (see "BIOSes with AGESA 1.0.0.4B caution" below for more info).

2. Do a clean Windows install

If you're using the Windows installation from your previous system, do a clean Windows install.

For testing purposes you could make a secondary Windows install on a different partition, disk or in a VHD file (#1, #2). If needed, you can use EasyBCD (info, download) to edit the boot entries.

3. Switch the PCIe slot speed to Gen 3/2/1

In BIOS, try switching the PCIe connection where the Xonar card is plugged from Gen 4 to Gen 3/2/1 or from Gen 3 to Gen 2/1. This method has been described in detail here by b1tmaster0 for his ASRock Fatal1ty X470 Gaming K4. Such an option is not available for all the motherboards. Some info and other ways to do this:

  1. Location and name of the settings is board specific and may also vary with BIOS versions. For ASRock it may be under "Advanced\AMD PBS\" and may be only listed as "M.2 PCIe Switch". For MSI it may be under "Settings\Advanced\PCI Subsystem Settings\" with options called "PCI_E* - Max Link Speed". For ASUS it may be under "Advanced\Onboard Devices Configuration\" with options called "PCIEX** Mode" (pic #1). For Gigabyte it may be under "Settings\Miscellaneous\" with options called "PCIe Slot Configuration".
  2. For his ASRock Fatal1ty X470 Gaming K4, b1tmaster0 changed the "M.2 PCIe Switch" connection speed, which was for his M2 slot that was also shared with the PCIe slot where the Xonar card was placed. You can check which M2 and PCIe slots share the same connection by consulting the motherboard manual.
  3. You can figure the name/number of the PCIe slot the card is placed in by going to MSI's "Board Explorer" or Gigabyte's "System Information\Plug in Devices Info" or by consulting the motherboard's manual.
  4. "PCIe x16 Switch" or similarly named options are for setting the connection speed of the first x16 slot and it's where you usually have the GPU. Some X370/X470/X570 motherboards have the 2nd PCIe x16 length slot connected directly to the CPU. Consult the motherboard specs or manual to find out if the 2nd PCIe x16 slot is connected to the CPU or the chipset. If the 2nd PCIe x16 length slot is directly connected to the CPU, you could place the Xonar card in the 2nd x16 length slot, enable the slot by setting "PCIe x16/2×8 Switch" or similar to "2x8" and change "PCIe x16 Switch" to "Gen 1". If it works your could also try with the speedier "Gen 2". Your GPU may run a bit slower, see benchmarks here and here, which depending on your computer use case and GPU may or may not be important.
  5. "Promontory PCIe Switch" or similarly named options are for controlling the connection link between the chipset and CPU. If you don't have the option to set the connection speed for a specific PCIe slot you could try setting this to "Gen 1" and if it works your could also try with the speedier "Gen 2". This may limit the speed of the devices connected to the chipset (NVME M2/PCIe SSD), USB3.x flash drives, other PCIe cards.
4. Move the card to a different PCIe slot

Try a PCIe slot that is connected directly to the CPU, which is the 1st PCIe x16 slot, and for some X370/X470/X570 motherboards also the 2nd x16 length slot. Consult the motherboard specs or manual to find out if the 2nd PCIe x16 slot is connected to the CPU or the chipset. If it's connected to the CPU, then the 2nd x16 length slot needs to be enabled in BIOS, see the description on  possible solution 3. d. "PCIe x16 Switch".

Also try the other PCIe ports, maybe one will work.

5. Install UNi Xonar v1.71.1 driver

It might reduce the frequency of these issues or even eliminate them. For STX II cards these drivers might cause a loss of audio quality (#1), waiting more confirmations on this claim.

6. (Unlikely) Avoid IRQ sharing between Xonar card and other devices

To do so you could try switching the other devices interrupts from Line-based to MSI, see info here. Do not switch the Xonar card to MSI as it will prevent your system from booting. You can try this in conjunction with moving the card to a PCIe in which the Xonar card IRQ is shared with less devices.

7. Disable Xonar's recording devices

Especially if your system resets/crashes when using applications that transmits or can transmit sound (such as Discord, Steam, Skype, Firefox, Chrome, etc.) you should try the following solutions:

a. Disable some of Xonar's recording inputs but keep either Microphone or Line In depending on which one you use. To do so, open Windows Sound (right-click on Windows Volume tray icon-> Sounds or if it's missing type in Windows search: “change system sounds”)-> Select Recording tab-> If you use Microphone input, then right-click and select Disable for: Line In(ASUS Xonar...), ALT (ASUS X...) and AUX (ASUS X...). Then right-click on Microphone (ASUS Xonar...) and select "Set as Default" and "Set as Default Communication Device".

b. Disable all of Xonar's recording inputs and use the Microphone from the onboard audio card. Try this is the solution above does not work. To do so, open Windows Sound (right-click on Windows Volume tray icon-> Sounds or if missing type in Windows search: “change system sounds”)-> Select Recording tab-> Right-click and select Disable for: Microphone (ASUS Xonar...), Line In (ASUS X...), ALT (ASUS X...), AUX (ASUS X...), Stereo Mix(ASUS X...) and Wave (ASUS X...). Then right-click on Microphone (HD Audio.../Realtek.../SupremeFX...) and select "Set as Default" and "Set as Default Communication Device".

c. If neither of the above solutions are applicable to you as you need both the Xonar's Microphone and Line In enabled, you could try is to select Microphone (ASUS Xonar…) or Line In (ASUS Xonar…) as input device in each of the recording applications that causes a reset/crash. For Discord-> User Settings-> Voice & Video. For Steam->Friends List window-> Gear icon->Voice->"Voice input device". For Firefox and Chrome you might not be able to do this.

8. Connect the card to the first m.2 with the use of a m.2 to PCIe adapter

This would only work for the first m.2 slot because it's the one connected directly to the CPU. If you have an m.2 SSD and can move it to one of chipsets m.2 slots, know there might be speed penalties involved at least with certain SSDs (#1). If you are interested in this method, you can read here Master-W-Steve recommendation of components in order to do this.

9. Plug the card into a PCIe riser

As it is reported here (#1), plugging the card into a PCIe riser that has a separate power connector, like this one, could work. The theory about why this works is that the PCIe riser has a separate power supply. It could be that the PCIe issues are caused by inadequate power delivery to the PCIe cards by the motherboard.

Please leave feedback in the comment section below if one of these methods worked for you. Mention your sound card, motherboard and its BIOS version, CPU and OS.

How to verify if it's stable

To speedup the testing and see if your system is stable or not, you can the following:

  • Install UNi Xonar drivers multiple times.
  • In an audio/video player, load some audio files and cycle through them for a couple of minutes (thanks Arconas).
  • Launch a voice chat or recording application (ie Discord, Skype etc.) and maybe try a test converstation. Do this a couple of times.

Why it happens and what else you can do

From what I can tell, the reboot issues are because of some sort of issue with PCI/PCIe signal transmission on some motherboards and this causes in case of the Xonar drivers a error which results in a system crash. Given recent discoveries, it could be that the PCIe issues are caused by inadequate power delivery to the PCIe cards by the motherboard (#1, #2). While the reboot thing could technically be fixed within the drivers, there is no one to fix this as ASUS and C-Media have given up on drivers for the Xonar cards and I have limited access and resources to do such a thing. But even with such a fix, there would still be a problem with the motherboard and how it handles the PCIe signal transmission or power delivery. In some cases these issues will be partially or fully fixed through a BIOS update (#1).

The best course of action would be for you to contact the technical support of your motherboard and let them know of this issue and ask that they look into it. You should include a link to this page to provide them with additional information. If you are having problems getting pass the low level copy-paste support, you can try contacting them through their own support forums or their Twitter or Facebook account.

Ideally this issue should also be brought up directly to AMD. Now, reaching someone there might not be that easy.


Other info & ASUS's response about these compatibility issues

Threads discussing these issues on ASUS ROG forums here and here.

ASUS official FAQ response about these issues here and here. The statement from ASUS that the cards (at least STX II and D2X) are not compatible is, at the very least, inaccurate, as it works with some motherboards and those Xonar cards are not the only PCIe cards affected. You would think that making both the Xonar sound cards and their own AMD Ryzen AM4 motherboards, most of which are affected by these compatibility issues, would make it much easier for ASUS to find a solution to the problem. Speaks volumes of how "great" their support is. To make matters even worse, after concluding that the cards are simply not compatible, they closed the main forum thread discussing this issue, thus roadblocking any community driven investigation for a possible solution.

On the topic of ASUS motherboards compatibility with sound cards, it's worth noting that you may run into issues with Creative cards as well (#1, #2). It's unclear at the moment if you will have the same problem with other motherboard brands or this problem affects mostly ASUS X570 boards.

ASUS owns ASMedia, the company that is behind the Ryzen's AM4 chipsets.


BIOS updates

Beta BIOSes and yet to be officially released BIOS versions can be found here.

I urge caution if you have a on a ASUS motherboard or from another manufacturer which does not allow you to downgrade to a previous BIOS version as a new BIOS could also cause new issues. If you have a dual BIOS motherboard, you should be fine.

BIOSes with AGESA 1.0.0.5

The AGESA 1.0.0.5 changelog mentions "Optimized PCIe® firmware to improve stability and interoperability", but AMD did not clarify what exactly does that mean and we don't know if this targets in any way the issues that people have with their PCIe soundcards. Before you update to BIOSes with AGESA 1.0.0.5 you should know that these may have some stability issues(#1, #2). If you have a on a ASUS motherboard or from another manufacturer which does not allow you to downgrade to a previous BIOS version it's probably best to wait for BIOSes with AGESA v1 1.0.0.6 or v2 1.0.0.2 (info).

BIOSes with AGESA 1.0.0.4B caution

Users are reporting that after updating the BIOS to a newer version that has AGESA 1.0.0.4B, the system won't boot if you have the Xonar card plugged in the motherboard. This happens with other PCIe cards as well (#1, #2, #3). Most motherboards brands seem to be affected (BIOSTAR #1, Gigabyte #1+, #2, ASUS #1, #2, #3, #4, ASRock #1). If you don't want to go to the hassles of updating the BIOS again to the previous version, you should hold off the update. Also, for some motherboards it is not possible to go back to the previous BIOS (ASUS #1, #2).

Update 13 Mar 2020: The fixed BIOS versions could still have problems with other PCIe cards. As someone reports here, his system does not work when the PCIe Firewire card is plugged. If you have another PCIe card and have a motherboard from ASUS or from another manufacturer which does not allow you to downgrade to a previous BIOS version, you should probably not update the BIOS to any version with AGESA 1.0.0.4B or newer. If you have a dual BIOS motherboard, you should be fine.

Update 06 Dec 2019: ASUS released on their official product pages the fixed BIOSes, at least for some of their X570 motherboards. For some of their motherboards the v1405 is the fixed one. The fix is not mentioned in the release notes, but the BIOS that follows after the initial AGESA 1.0.0.4B BIOS should be the fixed one.

Update 26 Nov 2019: ASRock's fixed beta BIOS versions are now available on products BIOS pages under Beta BIOS section with the changelog listing "Improve PCIe card compatibility". For ASUS motherboards and also other manufacturers, fixed BIOS versions can be found here, for some of Asus's X570 motherboards the fixed BIOS versions are labeled 1405. You should update to these beta BIOS versions only if you are stuck with a broken BIOS with AGESA 1.0.0.4B, otherwise you should probably wait for the final versions.

Update 23 Nov 2019: ASUS started distributing through forums and technical support a fixed beta BIOS for some of their motherboards (#1, #2, #3).

Update 20 Nov 2019: Gigabyte(#1) and MSI(#1, #2) released updated BIOS versions with AGESA 1.0.0.4B that do not have this issue. It seems Gigabyte replaced the previous BIOS and does not list the fix in the changelog, thus I am not sure all of Gigabyte's motherboards have the fixed BIOS, but BIOSes released on 2019/11/08 or later should have the fix. MSI list in their fixed BIOS change log "Improved PCI-E device compatibility". ASRock does offer through technical support a beta BIOS for some their motherboards that also works fine (#1, #2). I am not aware that ASUS or BIOSTAR have anything yet.

If you've updated the BIOS and the system no longer boots, you could try this: remove the sound card, start the PC and enter the BIOS, look for a setting a called “Initial Display Output” or similar, set it to the PCIe slot in which the main video card is plugged in, save settings and shut down the PC, reinsert the sound card and see if system boots. If it does not, remove the sound card again and revert back to the previous BIOS.

If you run into these issues you could contact your motherboard support letting them know of the issue.

Useful for:

  • ASUS Xonar DG, Xonar DGX, Xonar DG SI, Xonar DS, Xonar DSX, Xonar D1, Xonar D2, Xonar DX, Xonar D2X, Xonar HDAV, Xonar HDAV Slim, Xonar Essence ST, Xonar Essence STX, Xonar Essence STX II, Xonar Xense.
  • Other C-media CMI8786 and CMI8788  audio chipset cards:
    • Auzentech: HDA X-Purity 7.1, X-Meridian 1G, X-Meridian 2G.
    • HTOmega: Claro, Claro Plus, Claro II, Claro Halo, eClaro.
    • Razer Barracuda AC-1.
    • TempoTec HIFIER Serenade.
  • Creative Sound Blaster Z, Sound Blaster ZxR, Sound Blaster AE-7, Sound BlasterX AE-5, Sound Blaster AE-7, Sound Blaster AE-9.
  • AMD A320, B350, X370, B450, X470, B550, X570, X399, TRX40 chipset motherboards.
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401 Comments

  1. Stanley14 Sep 2020 @ 22:01

    I see that the 1.0.0.6 bios has been released, are there any changes about asus STX II compatibility?

    Reply

  2. Trabbi04 Oct 2020 @ 21:15

    I can confirm solution #9 works for Asus Crosshair VIII Hero Wifi. It works 99%.

    Due to current situation, I'm working from home since March and updated my system to a Ryzen 3 3900X a few weeks ago. Of course, it doesn't work at the beginning, even with the Bios Version, claiming to fix the problem with an Essence STX II, it still crashes. Latest Bios didn't worked too. I bought a riser from Amazon with a separate 6 pin power connector and now it works perfectly fine. I'd say, once a week it crashes when I'm switching from headphones to speaker. My PC runs 12-14h a day, I need it for work and for gaming/music/watching YouTube/....

    Crashing seems to happen under high (sound) load, but quite randomly. I can switch 20+ times with a high frequency with no problems (2 seconds headphones, 2 second speaker, 2 second headphone,...). But like I said, once a week it still crashes, but that's okay for me.

    When I remember the photo of solution #9 correctly, the 6 pin connector isn't connected, I have to plug the 6 pin connector into the riser to power my Essence STX II properly. It runs smoothly now.

    I'd say that a USB riser, described in solution #9, should work for all mainboards as a solution.

    I hope, this information helps other people 🙂

    Reply

    • CarvedInside05 Oct 2020 @ 02:12

      Great. Thank you for sharing. If you can provide additional info:
      1. Before this, have you tried any other possible solutions, particularly 3, 4 and 7? On this note, you could also try these in conjuction with the PCIe riser solution, maybe it would solve that rare crash also.
      2. Please provide a link to the product PCIe riser you bought.
      3. In which PCIe slot is the riser plugged in?
      4. Please clarify this statement "When I remember the photo of solution 9 correctly, the 6 pin connector isn't connected, I have to plug the 6 pin connector into the riser to power my Essence STX II properly. It runs smoothly now." You meant to say that at one point you had the STX II card connected to the PCIe riser but forgot to connect the separate power connector to the PCIe riser and in that situation you still had crashes?

      Reply

  3. Art38516 Oct 2020 @ 14:24

    Asrock x370 Taichi bios 6.40 (Agesa 1.0.0.6) Xonar STXII is usable though not 100% working but it's the most stable bios since like first bios with zen2 support. Changing output will randomly generate BSOD. Sometimes when loading/closing windows will crash too. Changing pcie speed will not resolve the issue. Used slot 4 and 5

    On MSI B550 Tomahawk (AGESA 1.0.8.1) seems to work perfectly fine i tried to trigger bsod by changing fast ouput from speakers to headphones for like 2 minutes and I gave up. No BSOD. Will test more in normal usage and report back. Slot used - bottom pcie x1

    Reply

    • Art38520 Oct 2020 @ 12:24

      I'm reporting back Xonar STXII is working without any problems on MSI MAG B550 Tomahawk AGESA 1.0.8.1. Tested ori driver, and all of Uni. Driver installation do not trigger BSOD on this board. Perfectly stable can't make it crash.

      Reply

  4. Nozi01 Nov 2020 @ 21:22

    I have a Gigabyte X570 Aorus Elite and not working with the STX II. I plan I will buy a Gigabyte X570 Aorus Ultra. Is there any news about this working properly? Thanks!

    Reply

    • CarvedInside02 Nov 2020 @ 06:30

      With your current motherboard, have you tried any of the possible solutions I provided? Particularly no. 1, 3, 4 and 7?
      If you have room in your case maybe it would be better to try the possible solution 9 instead of trying with a new motherboard.

      Regarding the Gigabyte X570 Aorus Ultra, I personally haven't seen any reports. I think it could go either way. If you decide to go ahead and buy the new motherboard, let us know how it goes.

      Reply

      • Nozi04 Nov 2020 @ 10:24

        I went through these points 1 year ago, but unfortunately it didn’t work. Another bios update has come out since then, I haven't tried it yet.
        I didn't try the PCIe riser. I'll check.
        Thanks for the info!

        Reply

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