1. Antoine22 Aug 2019 @ 01:01

    I'm having a crash every time i try to open the windows audio panel, my computer restart. I have a xonar DGX sound card.
    I tried uninstall and install the drivers again, I tried with the standard Asus sound panel and with the C-media control panel, nothing works.
    Thanks for your help mate.


  2. Gian26 Aug 2019 @ 00:58

    Hey guys thank you so much for your support, i'd like to report the situation on my hardware. I got my STX II kinda running on an asus prime b-450 plus with UNi-Xonar-1821-v1.71-r2, on the latest windows 10. Switching output seems to be working fine except when i'm using discord, connecting to an audio channel 9/10 reboots the pc. Opening Discord used to make the relays click, now i set the drivers to legacy and can't hear switching but the reboots still occur.
    Connecting a microphone to the port on the card reboots the pc while connecting to the front port seems ok.
    The only thing i really care about though is that the sound is different and quite worse. It's flat, totally missing range and the output volume has significantly reduced, do you happen to have any clue on this?


    • CarvedInside26 Aug 2019 @ 20:42

      Hi. So with 1.80b drivers or Asus STXII original drivers what issues did you had as opposed to current drivers? There is a report that claims the STX II card works fine with your motherboard. You could try the v1.81a drivers if you haven't and also take a look the tips from the FAQ entry on this page.

      For sound quality issues with v1.71 drivers. Are you sure you've installed UNi-Xonar-1821-v1.71-r2 and not UNi_Xonar_1821_v1.71.1? If so, try with v1.71.1.
      You could also try installing the card as a STX card. To do so follow the steps described here at Possible Solution 1 but choose the XonarSTX.INF.

      For the issue with Discord audio channels. Things to try:
      1. In Discord, go to User Settings-> Voice & Video -> Check that the input device is set to Microphone (Asus Xonar...).
      2. In Discord, go to User Settings -> Voice & Video -> Advanced -> enable "Use Legacy Audio Subsystem". If "Use Legacy Audio Subsystem" is already enabled, try with it disabled Restart Discord after making the change.
      3. You could try the following: right click Windows Volume -> Sounds -> Recording tab -> right click on Line-In (Asus Xonar...)-> Disable.
      4. You could use the microphone connected to the onboard sound card and following the step 1 instructions but selecting the microphone from the onboard card.
      You should restore the settings for those things that did not work.

      Let me know if any of these tips worked.

      LE: add the link to the Possible Solution 1


  3. Anth26 Aug 2019 @ 05:24

    Having some issue with the Xonar DG on a Asus C6H (X370 ROG CROSSHAIR VI HERO) motherboard running Windows 10 1903.

    The sound works fine after a reboot, but stops working after 20-30 seconds. After this happens, the card is still listed as running properly in device manager, and no related events are logged in event viewer. Playback on YouTube videos will freeze until I switch Windows 10 to another sound device. Switching back will freeze playback again. Only thing I found to fix it is to reboot, but then the same thing happens again.

    I tried multiple drivers, including the official Asus and older versions of the UNi driver, all had the same issue. I am using a PCI-e to PCI adapter as my motherboard has no PCI slot


    • Anth27 Aug 2019 @ 00:41

      to add to this, no bsods and no sudden reboots have been happening. I have also tried disabling my motherboards audio through the bios and uninstalling their drivers. Unsure what could be causing it to work perfectly then suddenly stop, it is reproducable after every reboot


    • CarvedInside27 Aug 2019 @ 21:38

      I've edited your comment so that the first letter of product names is uppercased and I've included the proper name of your motherboard. Next time please take the time to do these yourself so that your comment is easily readable and includes the relevant information.

      Now to your problem. While the motherboard you have is known for having compatibility issues with Xonar cards, at least with Xonar STX II, I think the problem in your case is from the PCI-e to PCI adapter. I've already written about this in this FAQ entry.

      What is the brand and model of your PCI-e to PCI adapter?


      • Anth27 Aug 2019 @ 22:16

        I apologise, I thought I went over the FAQ, I don't know how I missed that. I am using the startech pci-e to pci adapter. Guess I will be returning it


      • Anth12 Sep 2019 @ 20:23

        I ended up getting the Xonar DGX. Can confirm it works perfectly with UNi Xonar W10 1825 v1.81a r2, under Windows 10 1903 Build 18362.356, using the Asus Crosshair IV Hero X370 Motherboard. No reboots, bsods or other issues that people were having with this motherboard and the Essence STX II


  4. Focuz28 Aug 2019 @ 19:25

    Hello, I recently upgraded to Windows 10 build 1903. When I try picking more than 2 channels for my headphones (DT 770 pro 80 ohm) it reverses back to 2 channels again. I've never had this issue before. I hope you can help me?


    • CarvedInside29 Aug 2019 @ 00:38

      It reverses right away? Which Xonar card do you have? Which UNi Xonar driver version do you have installed?
      The the following:
      1. If you didn't reinstall the drivers after the upgrade to build 1903, try reinstalling them.
      2. Check that Spatial Sound is Off (right-click on Windows Volume tray icon).
      3. Try to set it the number of channels directly in Windows by right-click on Windows Volume-> Sounds-> Playback tab-> select "Speakers (ASUS Xonar...)"-> press Configure and select here the number of channels.

      Let me know if any of these helped.


      • Focuz29 Aug 2019 @ 10:06

        Thanks. I reinstalled to the newest driver. I have Xonar DGX.
        2. I have always used Dolby atmos as far as i can remember. Is that the problem?
        Will try number 3. when i get home. But i haven't seen that option in windows playback tab.


        • Focuz29 Aug 2019 @ 12:50

          Number 2. solved it! Thanks sir


          • CarvedInside30 Aug 2019 @ 00:57

            Glad it worked. I've checked things a bit and this behavior was also present in version 1809. In version 1803 it may let you change the number of channels but that would deactivate any Spatial Sound option.


  5. blindrezo31 Aug 2019 @ 20:02

    Hey there, I just wanted to thank you for your work on these drivers. I used to use them until 2017, when I bought a Ryzen 1700 and Asus Crosshair Hero VI motherboard, at which point... well, you know.

    I recently upgraded to a Ryzen 3600 (until the 3950x comes out) and a Gigabyte X570 AORUS MASTER. I originally hesitated to even try the card, as I wanted to avoid raging over it not working, but yesterday, I finally decided to go down to my basement and fetch my audio card.

    I'm happy to report that, so far, I haven't had a single problem!

    Here are the specs:

    Ryzen 3600
    Gigabyte X570 AORUS MASTER
    Asus Essence STX II - Inserted on bottom PCIe 1x slot on motherboard
    Windows 10 Pro 1903
    UNi-Xonar-STXII-11.5-v1.80b-r3 - Installed with "Low DPC latency" option

    It seems to be perfectly stable, but I've only had it installed since yesterday, so I'm not sure if you want to add this as being compatible just yet. If I run into any problems, I'll be sure to get back to you on it.

    Thanks again and keep up the good work!


    • CarvedInside02 Sep 2019 @ 02:41

      Thank you for sharing the information. Good thing that you tried the STX II card again and it's good that you went with the Gigabyte motherboard this time around. If you had an ASUS X570 motherboard instead, it probably would not work. Crazy, I know. Hopefully it will continue to work fine. Let us know in a couple of days or so, after you've used you system more if there where any problems.

      Regardless if it works fine or not, please take a screenshot of devices and their IRQ (guide here) and send it to me via e-mail or upload it somewhere. Only those (PCI) entries are important and make sure that all (PCI) entries are included in the screenshot.

      I want to ask you how the onboard audio card on the x570 Aorus Master performs compared to the STX II, have you noticed an improvement when you switched to the STX II?


      • blindrezo11 Sep 2019 @ 21:33


        Figured I'd give you an update. It's been working perfectly fine up until now! Here's the screenshot: https://imgur.com/r6CsXL2.png

        I've had a lot of issues with Asus boards in the past... The only reason why I bought the Asus Crosshair Hero VI (x370) for my first gen Ryzen was because it was supposed to be the best. It gave me non-stop problems!! (like most Asus boards I buy) Though I do have to admit, one of the best boards I ever owned was a mid-range Asus Athlon 64 board. That baby was rock solid and never gave a problem. I dunno why I get so unlucky with most Asus boards though. Oh well.

        As for the sound quality, I DID take a take a peek at the on-board sound and while it's definitely better than all other on-boards I've heard in the past, it wasn't good enough... After my removing my STX II, I invested on a Schiit Modi 2. It didn't quiet seem as good as the STX II (but that could have just been me), but it did offer excellent audio quality, and it was better than the Aorus Master's on-board sound. I don't quite remember how to describe the Aorus Master's sound... I remember it being loud and punchy, but there was something off about it. Maybe a lack of certain detail... All I know is that I compared it side by side with the Modi and the Modi won out. Wish I could remember, sorry!

        Switching from the Modi to the STX II felt like a bump up in quality. Again, I don't remember enough to explain it. Though, then again, it could just be me and my love for the ridiculously expensive sound card I bought. 😛 But yes, the on-board to STX II is an obvious difference. I think it's the best on-board I've ever heard, but I would still choose a good sound card over it.


        • CarvedInside15 Sep 2019 @ 02:42

          Thank you for all the information.
          You are not unlucky with ASUS motherboards, most of their products have issues and for those issues that could be fixed their support is nonexistent so not much gets fixed.


          • blindrezo19 Sep 2019 @ 20:52

            Good to FINALLY get confirmation from somebody else. So many people disagree with me and insist that Asus releases some of the best products.


          • blindrezo20 Oct 2019 @ 19:35

            FYI, I just had my first *click* + reboot. I actually laughed...

            This happened when I opened Discord. The card always makes a click when I open it, but it's the first reboot I've ever had because of it. 🙁

            Update: Ok… So I tried opening discord again and it rebooted again. *sigh*

            Third attempt was successful tho…


            • CarvedInside21 Oct 2019 @ 02:26

              These Discord crashes mean the card might not be 100% stable on your motherboard.

              The card might make a click because Discord is going through the available recording devices. For example if you switch the recording input from Microphone to Line In the card will make a click.
              To avoid this Discord crashes you could disable the Line In if you use the input as Microphone. 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 Line In and click on Disable.
              Another thing you could try is to select "Microphone (ASUS Xonar...)" as input device in Discord-> User Settings-> Voice & Video.

              Let me know if any of these worked and if you notice any other issues.


              • blindrezo23 Oct 2019 @ 22:27

                I never thought disabling them. I disabled both Microphone and Line In, as I use a Blue Yeti USB mic.

                Thanks for the suggestion!

                I'll keep you posted on any other issues, but outside of those 2 crashes in 1 day, it's been working perfectly for a month! 🙂


                • blindrezo25 Aug 2021 @ 13:01

                  Hi again,

                  I know it's been quite a while, but I thought I would mention that over time, my computer gradually began to restart more and more. It's reached the point where it restarts quite often now - three times last night and already once this morning, after having the computer on for less than 30 minutes.

                  Since my posts in 2019, my BIOS has been updated by several revisions and I'm currently on Windows 10 version 2004. I've also switched from my 1080 Ti to a 3090.
                  Update: Restarted again, now, after about an hour of doing some research on what to buy next... Yanked the card out and currently using my Schiit Modi 2, until I can get myself an EVGA Nu Audio Pro card, which seems to be out of stock everywhere. 🙁

                  I've tried all the troubleshooting on this site to no avail.

                  I may soon, finally, remove the card, put it to rest and will have to look for an alternative. 😢


                  • CarvedInside27 Aug 2021 @ 17:26

                    Thank you for the update. Sorry to hear this. Have you noticed that the system became unstable or more unstable after the BIOS updates?
                    If you are still open to testing, I thought of 2 other possible solutions you could try:
                    - In Windows Power Options->For each power plan you use->Change plan settings->Change advanced power settings-> PCI Express-> Link State Power Management-> Off.
                    - Disable Global C-State in the BIOS.

                    When you are looking at something to replace your STX II if you want a 2.0 I suggest you look at audiosciencereview website helping picking a high audio quality external DAC. Even for a 5.1 or 7.1 setup I think you can pair the external DAC for front speakers with the internal audio onboard card for the rest of the speakers. I have to do more research on this topic but from what I've read, using Voicemeeter software can do this.

                    BTW thank you for the donation.


                    • blindrezo28 Aug 2021 @ 20:09

                      You're very welcome. It's a small thank you for the few extra years I got to squeeze out of my STX II. 🙂

                      As for the PCI Express power management, I always have it set to off every time I build a new gaming PC, so you can rule that out.

                      As for the C-State, I USED to always disable those, but I probably didn't with my Ryzen 3950, since I'm not overclocking at all. (Will check and confirm, though)

                      Thanks for the audiosciencereview suggestion, but I already pulled the trigger on a Topping DX7s. I would have preferred the Pro, but the DX7s was more or less in my price range (more than I wanted to spend, actually). The reason why I bought one of these is so I can take my Burson v6 opamps from my STX II and stick them in the DAC. (Though I'm likely going to be waiting a while for the extensions to arrive, as the opamps won't fit inside the case when slotted in normally)
                      Just checked, and as I suspected, I never touched the Global C-state options in the BIOS. It's all set to auto.

                      I also realize I never answered your question about stability. Unfortunately, I never really paid attention to it, so I'm not sure what caused it. Though I do know that it was never 100% stable, even after disabling the Line-in. It would randomly restart, just not nearly as often as it had been more recently.
                      Sorry for another post... but now that I think about it, I only updated my BIOS after I got the 3090, in order take full advantage of it. It's very possible that it got worse ever since then. Not sure if it's related to the Resizable BAR options in the BIOS or just being a much newer firmware. I was on an extremely old firmware before the 3090. I think I jumped ahead by almost 20 revisions with the update, lol.

  6. mb702 Sep 2019 @ 16:31

    Today the front panel in my Xonar DS has stopped working..
    When I connect the headphones to the front panel I hear a strange click inside the computer.
    I reinstalled the drivers but it did nothing (I tried v1.81a r2 and v1.80a r3). I'm guessing it's because of some windows 10 update, because the day before everything worked. How to solve this problem?


  7. Daniel wray02 Sep 2019 @ 19:59

    Hi. I have the Xonar StxII 7.1 version and yet to get the analog part to work, my system specs are Gigabyte X470 Aorus with the Ryzen 2600 CPU the rest of the card works fine. The main reason for getting this sound card was so I could have more flexibility on adjusting each channel accordingly but yet to have any luck. Many thanks in advance on any if possible suggestions


  8. Personwithhats02 Sep 2019 @ 20:13

    Continuing previous discussion, sorry about all this :<

    Did not have this issue with defective cable. Already checked balance first thing, it's 100 for both .-.
    Switching to 'Microphone' drops quality and still only heard in 1 ear.
    When using discord/any program really it registers in both ears, so far only default monitoring/playback pings me only in 1 ear.
    When using a cheapie USB mic it is listed as '2 channels' but I can hear in both sides.


    • CarvedInside04 Sep 2019 @ 03:16

      Uninstall the current Xonar drivers and install them again. Another thing, try a different driver version like 1.81a if you have 1.80b right now. If those do now work, this could be either some wrong setting somewhere or a Windows bug.


  9. b1tmaster002 Sep 2019 @ 23:17

    Dear friends,

    To all the Xonar users (perhaps).

    I own the Xonar D2X card and just like you, after I update to the new AMD platform, in X4xx chipset, I have (had) the same issues as you do.
    My son have name the "click" of the relays "Machine Gun Russian Roulette". Click - Reset !

    After literally thousands of restarts and driver installs/uninstalls of several drivers, including ALL the UniXonar Drivers (you do a great job by the way), I have found the key problem and until now, everything works as before.
    All the ideas I had try, fail from after the POST, up to the longest 2-3 days at most.The more stable ideas, was failed after a “Full Screen” to a YouTube video, or an “Alt-Tab” to a game.

    I just want to share the info of fixing that fuge issue, because these cards are “One to Rule them All” in the Audio Quality part. They are not to be thrown away. I HAD to find a way to make it works. Or at least to say that I have search everything and did everything.

    A little background story (long story short):
    After the launch of Ryzen CPUs + Chipsets, the Xonar users had constant reboots …I will not say more. We all know what and when.
    The Asus, in a short global message, announce that they cannot do anything. It is not in their hands and anyone that has Xonar card, can sell it to non-AMD users. "We are Sorry".
    The AMD from the other hand in some forums and threads deep in the search pit, says that it is probably something with the buffers, but cannot determine what.

    So after hundreds of posts and technical info, I start dig into the problem, by myself. Or to be more precise, I had not found any permanent solution (until I start the tests) to any post, that be able to solve the problem.

    The solution :
    As a technician, I have test it to several motherboards, mostly with X4xx and B4xx chipsets. From Asrock, Gigabyte, and Asus.
    I have the Asrock Fatal1ty X470 Gaming K4 in my possession, and all the info about the BIOS menus, is from that motherboard. But from what I saw, all the motherboards, has the same settings tree in the AMD menu. More or less…

    The problem is -at least in the motherboards that I could test- the speed of the internal PCIe Switcher/Lane for the PCIe slot that the card is in.
    I will explain. When you put a PCIe Gen1 card in a Gen2 or Gen3 slot, it will work ok, because the Gen2 and 3 is backward compatible, with Gen1 peripherals. But here, something goes wrong to the internal buffers or the communication with the Xonar card. Either with the PLX or AsMedia bridge Chip, or with the Audio Processor itself. We do not care, as long as the card can not work. We only want solution to the problem.
    The solution, came from a …….network card at the Asrock Fatal1ty X370 Professional Gaming, that had install to a video producer. I used the 5Gb LAN in a 1Gb switch and had constantly drops and disconnections. When I connect it to a 10Gb switch, everything was perfect. In a 1Gb switch, had connection problems.

    And then a flash like thunder strike me. I mean… I could not think of anything else at that time!!!

    I brought out the Xonar from the …ashes and start again the new …research! I switch the CPU internal PCIe switches and lanes (except the first 16 that goes to the GPU) to Gen1 MANUALLY and …BOOM!!!

    NO freeze, NO restart, NO nothing. The card works like before, just by changing the speed of the PCIe bus, to Gen1, manually.

    To do this, you have to enter the BIOS of every motherboard (see the manual how). Usually you press F2 or DEL at the 1-2 seconds of the POST sequence. Then you go to "Advanced" and from there to "AMD PBS" settings. In PBS settings, there are the options to change the speed of the internal (or chipset-I do not know) speed of the PCIe lanes and switches. What and why there are PCIe switches, is not a lesson for this post. You must find, which PCIe is the one that you have plug the Xonar card. One easy hint, is, that you can put the card in a PCIe that is switchable with a M2 slot (see the motherboard Manual). You set the speed to that M2 slot at Gen1 and there you go. Or if you have any nvme/M2 drive in that slot, you can try the old fashion way. Trial and error. The only one that you will never change, is the first x16, that goes obviously to the first PCIe. That is the Video Card.

    At my motherboard (Asrock Fatal1ty X470 Gaming K4) and for anyone that has the same or similar motherboard, the settings that works are :
    PCIe x16/2x8 Switch = 1X16 -That way, I force it to NOT and NEVER split the first 16 lanes to the two PCIe slots, but only to the first. And possibly I turned off the second "visual" x16 slot. But I do not care. I have nothing in it.
    PCIe x16 Switch = Gen3 -This is obviously the speed of the first PCIe. The Video Card.
    Promontory PCIe Switch = Auto -That, probably is the chipset. I am not sure. Change it, at your own will.
    M.2 PCIe Switch = Gen1 -The PCIe that is shared with one of the M2 slots in that motherboard. I put the card in it, just to be sure it is Gen1 100%.

    After that, it was the first time, I literally had not a single reboot, even after play with all the settings for hours and days (more than a week now). I catch myself intentionally to change the output frequencies and channels configuration, just to try to make it crash! But nothing happens. I am even with the official Asus driver, that by the way, it is still in beta stage (!!!) ;p And the card works perfectly, and I can say that in my case and I believe and to many of the users, “problem solved”.

    I had also try all the other options, like different settings, different versions of Xonar Drivers, different UniXonar driver versions, Different PCIe slots, Power Management options …you name it. Almost anything that all the others suggest and try. But most of the users that give advice, are not owners of the card. And the owners, probably, are not technicians. SO I had to try something else, from...a little deeper technical settings and it works.

    Just one reminder. That solution, has one requirement. The user must know , at least the basics about the BIOS settings. If you do not know how to change BIOS settings, ask from a technician or a friend that knows what to do in there. And mostly, this is BIOS we are talking. If you happen to do it a mess, and the computer freeze, just reset it (see the manual how) and start all over again. And of course, do not blame me if anything goes wrong. The percentage to go something terribly wrong is up to 0,000… . But it is not "0". ENYTHING can go wrong, by configuring the BIOS. So be careful if you are willing to try.

    You just have to try by yourself and inform us, if it works.

    Maybe "CarvedInside" make a new list, of the users that change that settings and works. I believe that it will work to many, if all of the Xonar users. Besides, the only thing that changes, was the platform. So, the platform must generate the error.

    Will wait for any that will try.

    Hope to be helpful.

    After a long journey,
    For all the Xonar community,


    • Ron7803 Sep 2019 @ 09:24

      b1tmaster0 Thanks for research 😀 but have u tested with Dolby Digital Live and Spdif too? Thats my Trigger for my D2X flips out in the known way.


      • b1tmaster003 Sep 2019 @ 15:15

        Dear Ron78,
        Unfortunatelly, I had do all the other tests, but not with spdif, or optical.
        I have an old decoder from Midiland, somewhere, so I will resurect it and inform you.

        I had the card in digital outpup before the AMD upgrade, but I found that the analog outputs, are way above average, in audio quality.
        And with the proper EQ settings, the clarity and the quality, is in another level.
        So I use the card only in analog.

        But I will install the decoder and see if it resets.

        Will "call" you back later...


        • Ron7803 Sep 2019 @ 16:03

          Many , many THX 🙂 the bsod should happening in short time, with spdif and source changing and skipping tracks , without dolby digital live. With Dolby digital live off , just spdif i have bsod with instant reboot.


    • CarvedInside04 Sep 2019 @ 04:09

      Good job finding this solution and thank you for sharing it. I will add your solution in the dedicated page.
      There was someone that tried switching the PCIe to Gen 1 and reported this didn't worked for him, so it might not work for all. He had a STX II card which has the ASMEDIA PCI-to-PCIe bridge.
      Thanks for the idea about a new table. I am thinking of maybe adding another column "works with solution" to the current compatibility table.


      • b1tmaster004 Sep 2019 @ 14:54

        Thank you for letting me share that info.

        Mine card, has the PLX bridge and I had update also and the firmware that Asus had release at the first days.

        Besides that, does he change surelly the speed for the coresponding slot?
        Do not get me wrong. I just say that, because I do not know how much does the friend know, technically.

        If he had choose the last slot and change the settings acording my guide, then maybe it is not the correct settings for his motherboard.

        But if he indeed do it correctly and put ALL the PCIe to Gen1 and laso the card to all the slots (just for being sure) and still it resets, then as you say,
        it is preferable, to do another column, to fill (according to the feedback) whitch cards works with that trick.

        Time and feedback will tell...

        Also, from what I see in the forum that he did his post, the Asus told him to do something with the power management, that he thought that it was stupid.

        For what I see from the Asmedia Technical Manual of ASM1083 (the bridge chip that use the STX II cards) that bridge chip, does NOT support PCIe Active-state power management (ASPM).
        And Asus told him to change some settings in power management, amongst other things. And he refused, by say these are stupid ideas!
        He asked for help, and end up be the smartest in the room!
        Something is not right there!

        So , we have to do each and every step of the helper, before we end up in a conclusion that his idea is stupid.
        …Me humble opinion.

        At least, I hope the viewers of that forum, to be better than him.

        Or at least, do what any the guy they ask for help asks.
        No matter how stupid it seems to be.

        We just have to wait for any user from that forum with STX II to respond!


    • CarvedInside11 Sep 2019 @ 21:52

      I've finally managed to write about your solution in the Xonar and AM4 compatibility page. Upon investigation, reading motherboard manuals and going through BIOS screenshots of motherboards reviewed on techpowerup.com, it seems that not many motherboards have an option to change the PCIe connection for either a specific PCIe slot or a M2 slot, and that includes other ASRock motherboards. I don't know if such a feature was added in later bios versions. But I've come up with another solution that might work, which is to use the second PCIe x16 length slot that's also connected to the CPU and change the setting related to the first slot, I think that should change the PCIe connection for both x16 slots.

      Regarding the issues you had with the 5Gb LAN card and Asrock Fatal1ty X370 Professional Gaming, did you also try this PCIe trick and with the 1Gb switch?


    • CarvedInside11 Sep 2019 @ 22:58

      Please take a screenshot of devices and their IRQ (guide here) and send it to me via e-mail or upload it somewhere. Only those (PCI) entries are important and make sure that all (PCI) entries are included in the screenshot.
      I'm interested in seeing if the Xonar card is sharing the same IRQ with other devices on your PC.


  10. b1tmaster003 Sep 2019 @ 16:33

    Optical – Coaxial S/PDIF output test :

    Dolby Output results :
    Dolby Digital Live – Check
    Dolby Digital Live with :
    7.1 Virtual Speaker – Check
    Dolby Digital Prologic II – Check
    DTS NEO-PC – Check (it is on the option, so I check it)
    Note : With and without Up-mixing to 5.1 with Dolby-Prologic IIx

    DTS output results :
    DTS Interactive – Check
    DTS Interactive with :
    7.1 Virtual Speaker – Check
    Dolby Digital Prologic II – Check (it is on the option, so I check it)
    DTS NEO-PC – Check

    Digital Loopback - Check

    All the tests, while playing a video in YouTube, with chrome.
    It is an almost 100% crash scenario.

    But the point is not this.
    You can say that the test period is very short. And you will be right.

    There is a BIG “but” here.

    This PC was upgraded as a Gaming PC, for my son.
    He also noticed, that the pc will 99% crash, after changing settings with the S/PDIF output.
    I had not a decoder installed, but the card just turns on the digital outputs, and before that trick, it almost immediately crashes.

    For a week now, after I “order” him to try to crash it again, with any way possible, he plays all the time with the digital output/input (from the mixer) settings of the card. And not only with these.
    I work the analog outputs, to PCM-192KHz, all the time.
    The card also (before the trick) crashed, if you play with the sampling rate, the up-mixing settings, the output channels, and mostly, with the mixer inputs.
    So, the test was on the run, for more than 7 days now.
    Today, I just install a decoder at the output, to verify it.


    These settings -at the motherboards that I had test it-, solve that problem.

    The card works rock-solid with this trick.

    Or to be more precise, until someone else try it and report that it crashes after that trick!



    • Ron7803 Sep 2019 @ 16:51

      Yeah good news, now i have to find the last pcie slot in the BIOS. Asrock b450 fatality.

      I report after time with testing 🙂 THX again!


      • b1tmaster003 Sep 2019 @ 22:12

        According to the manual, the M2 slot that is near the cpu, is shared with the "visual" second x16 slot of the motherboard.

        The second M2, is shared with two of the Sata ports.

        So, you have to find the option to change the M2_1 speed in the bios.


        • Ron7803 Sep 2019 @ 22:42

          I have these options with my AsRock Fatal1ty B450 Gaming K4 not. I take a Screenshot and posting here. Now it runs with promotory PCIE at Gen1.


          • b1tmaster004 Sep 2019 @ 14:25

            I can not see any screenshot.
            It has option only for promotory?

            Have you upload anything, or I have problem to see the images at this forum?


            • Ron7804 Sep 2019 @ 14:43

              Here are the pics. i have changed Promontory switch to gen1 , graphicscard switched to pcix 3.0 and no bsod since yesterday with my D2X. 🙂



              • b1tmaster004 Sep 2019 @ 15:00


                +1 if it is constant....

                WIll see after a week, just for being sure.
                If you can, just report back after a week, for verification.


                • Ron7804 Sep 2019 @ 16:02

                  one moment^^ there are side effects with this setting on Gen1, Forza7 who knows why...crashed with this setting, without all fine in forza7. this case is reproducible. damn, back to old solution , all the time with Dolby digial Live on and with Music listening DDL off PCM 2 channel spdif. Maybe forza is a extra case, other games no problems with starting with promontory Gen1.


                  • b1tmaster004 Sep 2019 @ 20:33

                    Do you have Afterburner?
                    It did the same and with me in this game.
                    It is an issue, with the RTSS module of Afterburner.

                    If you have it, please close it, before load that game.
                    DO NOT put an exception in the RTSS.
                    Simply close Afterburner and test it.


  11. b1tmaster004 Sep 2019 @ 23:08

    Then please check if by change the speed to +1 (Gen2) changes anything.
    And what driver do you use? UniXonar, or Asus?


    • Ron7804 Sep 2019 @ 23:50

      UniXonar , i do testing gen 2 tomorrow.


      • b1tmaster005 Sep 2019 @ 15:40

        If it will not fix it, then complete ununstall Uni and install the Asus driver.
        The one and only beta for Windows 10.

        I have install the Asus driver, because in Uni, sometimes has problem the line in.
        And because, I want to use the official for the “speed” test.

        At least, if anything goes wrong, I will be sure, that the programing code, is the original.

        Will wait for feedback.


      • CarvedInside11 Sep 2019 @ 22:55

        If you've changed "Promontory PCIe Switch" then that is for controlling the connection link between the chipset and CPU. How did your system behave after setting it to Gen 2?

        Have you tried the other possible solutions I've provided over the Xonar and AM4 compatibility page?

        With the Xonar card plugged in, please take a screenshot of devices and their IRQ (guide here) and send it to me via e-mail or upload it somewhere. Only those (PCI) entries are important and make sure that all (PCI) entries are included in the screenshot.


  12. b1tmaster005 Sep 2019 @ 01:14



    • CarvedInside05 Sep 2019 @ 01:44

      Please remake your comment as a reply to the comment you are responding.


      • b1tmaster005 Sep 2019 @ 12:58

        I have no tools for editing, or personal message.
        Only a reply, that after 9 replies, it dissapears.

        Am I doing something wrong or missing anything?

        And also, I select to be informed for comments, but nothing happens.

        Delete this post after 2 days.


        • CarvedInside05 Sep 2019 @ 15:38

          I am talking about a making the comment again but as a reply to this one, because you made a new comment instead. While in case of this comment it is perfectly fine, because the previous comment thread reached it's limit and did not allow more replies. I will make that reply comment for you now, but you should do that in the future if you make a new comment instead of making a reply to a existing disscusion, after which I will delete the wrong comment.

          Regarding e-mail notification of new comments, maybe you did not confirm that subscription through through an e-mail received when you've subscribed. Right now you should have received an e-mail with active subscriptions, check if there is an active subscription for this page comments.

          Regarding your writing I want to make a suggestion so that your comments are more easily read. When you're a writing a sentence that is continuing the idea from the previous sentence, do not make it on a new line, instead, just make it after it. For example, your previous comment should have looked like this: "I have no tools for editing, or personal message. Only a reply, that after 9 replies, it dissapears."


  13. hub06 Sep 2019 @ 22:42


    Whether your drivers are or will be compatible with the AIM Audio SC808 (C-Media CM8888)?


    • CarvedInside06 Sep 2019 @ 22:57

      The UNi Xonar drivers are not compatible and can't be made compatible with that card. Such a thing would require a whole new driver mod for C-Media CM8888 drivers and I don't it's feasible to invest my time in it.


  14. Mike10 Sep 2019 @ 03:42

    Hey, I have stx2, and I reinstalled the drivers, but now my but depth is being set to 16 when playing 24 bit files. Any ideas?


    • CarvedInside10 Sep 2019 @ 04:11

      Hi. Tell me the following:
      1. Which driver version you've reinstalled?
      2. The Windows version. If it's Windows 10 include which specific version.
      3. Are you using ASIO as output playback?
      4. Using analog or digital card output?
      5. This issue started exactly after the driver re-installation?
      6. Where is it being set to 16bit? You'll will have to give a detailed description of what's happening and where.


  15. snusnu10 Sep 2019 @ 10:05

    upgraded to 1903

    works fine on ver10.0.8. 1825 so far from a listening standpoint only.

    should I upgrade the driver to the new UNi Xonar W10 1825 v1.81a r2 ?


    • CarvedInside10 Sep 2019 @ 17:26

      The change from v.1.81a to v1.81a r2 is "Rev. 2 changes: Added support for STXII cards in Asus Audio Center, cards will be detected as STX by Asus Audio Center but feature wise almost everything should be there.". Upgrade to v1.81a r2 only if you want that fix.



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