1. Balrog14 Sep 2021 @ 03:21

    Alas, the erroneous "unplugged power cable" message has become a permanent fixture. I haven't the heart to retire the card, hoping it will resurrect.


    • CarvedInside15 Sep 2021 @ 01:17

      I don't see the point of this comment. Maybe if you would have made it as a reply to your original comment about this issue it would have been ok.
      Looking back, you didn't bother replying back. Don't even know if you've read my reply back then.


  2. Qwsazx30 Sep 2021 @ 13:34

    For the beginning, I'd like to thank all creators of these drivers and utilities. Keep up the great work guys!

    I'd like to ask for help with small, but annoying issue. It's not probably related to Uni Xonar, but to general Asus software. Making it short: I have Xonar DX. The card works flawlessly using both Uni Xonar and standard Asus drivers. Except one thing. Asus Xonar Audio Center always shows me error message about external power not plugged in and then closes.
    The message is "The internal Power for Xonar DX is not detected. The audio card may not work. Please power off your PC and then connect the power cable onto the card.".

    Power is connected to my Xonar, the card won't work other way. Or I'm wrong and DX can work without external power (for example with some options disabled, no headphone amp etc.)?

    Anyway - is there any solution to bypass this annoying message and run Xonar Audio Center? I prefer it over C-Media Audio Panel. Any fix, DLL replace with file from Xonar D1 drivers etc.? I tried to install D1 drivers as well, but they don't change anything. The card works perfectly, but Xonar Audio Center won't start complaining about missing D1 card.

    Thank you for any help. For lack of help too, as I'm aware it's just totally meaningless issue 🙂


    • Willy26 Oct 2021 @ 20:13

      Hello. I have the same card as you, and I used both Asus center and C-media control panel on Windows 10 and now on Windows 11(I have Xonar Dx since 2012 I think) so it has almost 10 years. Never saw that error. It might be your power supply not working correctly or maybe the connector of the card needs to be cleaned(I did a full cleanup of the sound card once a year with isopropyl alcohol...every inch of it, especially the connectors, just disconnect it from pc, clean it carefully...let it dry for a few hours to make sure then put it back in the pc. It it still gives you errors, try another power supply, if it still gives you errors, it might be bricked.


  3. JustGetAHouse902 Oct 2021 @ 03:28

    Ive been using Uni Xonar drivers for 6 years. Theyve worked flawlessly the entire time. Like the post above Id like to thank everyone responsible for making them.
    I now, for the first time ever, have an issue with my Xonar Essence STX that I just cant solve. So inspite of the low activity here I am, in my desperation, asking for help here... in the off chance that someone might stumble upon this who actually knows a solution.
    Since a new PC build and windows install I cannot get any sound out of my soundcard. My headphones (HD700) work fine and are plugged in correctly. Molex power is fine, the soundcard does the typical click on start up and Ive also tried a different molex cable. Device manager recognizes the soundcard. Driver installation of UNi-Xonar-1823-v1.80a-r3 works fine as it always has. Headphones in Xonar Audio Center is enabled and the program shows dancing bars when I play audio. Default Asus drivers do not work either.
    Any ideas? 🙁


    • biorpg05 Oct 2021 @ 11:57

      Some things you can try based on what you've stated.
      1. Disable all other output devices in the sound control panel. This is commonly a problem when you have plugged in a monitor via HDMI, as the associated HDMI audio port such as installed automatically with NVidia drivers, is assumed to be the default over any analog output, regardless of the monitor's actual capabilities or having devices plugged into any analog audio jacks.
      2. If the above does not work, try installing the drivers for the on-board audio. You should find these on your motherboard's manufacturer website. This way you can test if it is an issue with the card, or some other issue, depending on if the on-board audio is able to produce sound, or if you hear silence there as well. (be sure to switch your headphones from the card's jack to the green jack coming out among the i/o shield, likely near an ethernet port, as well as selecting that port as the default audio device in sound control panel before testing)


      • JustGetAHouse906 Oct 2021 @ 16:50

        Thank you very much for your answer. I do indeed have a monitor newly connected via HDMI. However disabling all other output devices in the sound control panel sadly doesnt help, the situation remains unchanged... dancing bars, detected and as output device selected soundcard but no audio. Onboard audio works fine with the same headphones that wont work with the soundcard, same goes for a different pair of headphones. I still like the HDMI theory though... simply removing the HDMI input also didnt help, do I have to fiddle with the NVidia drivers then?


  4. TG141002 Oct 2021 @ 20:58

    I just updated my PC to W11 beta (had to uninstall UNi Xonar to not get a GSoD at the start of the installation).

    Now my problem is that I can't seem to get rid of the stereo upmix to 5.1. Earlier I found the culprit under the "enhancements" -tab in the audio device properties, however, now the said tab doesn't exist for my sound card. I'm using a Xonar Essence STX, driver 1.81a with the C-media panel.
    Is there some other way to disable the stereo upmix? I'd prefer not to have music playing mainly from my center speaker. (5.1 audio works exactly as intended, it's just stereo that's bugging me, and only in certain programs, my browser (Vivaldi) for example works great, but ie. Spotify plays mainly from the center)

    I also find it kinda funny that even though I'm using the S/PDIF output of the sound card, I have to have "speakers" selected in windows, instead of the Digital Output, but it's not a problem, since I now know about it, unlike half a year ago when I last installed these drivers.

    A bit annoying how I thought I knew exactly what to do this time beforehand, only to find that one of the settings doesn't exist anymore. Otherwise everything went smoothly.

    Any help would be greatly appreciated, also massive thanks to you for keeping these Soundcards alive!!

    Edit: corrected the driver version from 1.80a to 1.81a


    • TG141003 Oct 2021 @ 13:53

      Ok so I just installed 1.80a r3 instead, I still don't have the enhancements tab in the Windows sound settings under speaker properties BUT: Stereo now works exactly like it should. So the problem is solved.

      Thanks again for these drivers!


  5. blar10 Oct 2021 @ 16:09

    I'm the only one who have recently started having issues where there is no sound on the right headphone? Rebooting the PC seems to solve it so I assume its a driver/Windows issue.


  6. Arnid26 Oct 2021 @ 13:55

    Hello, my precedent Jamulus software (to jam music online with others musicians) was not working anymore, so i decided to reinstall W10. Now i got an enormous ping with my Xonar Asus Sound Card. I don't understand why coz it was good before, now i got 300ms when i had 50ms max before...
    I remeber that my ASIO didn't show "64" before reinstalling, could it be that ...?

    And when i set my internal motherboard soundcard Realtek the ping is ok, but i don't get any sound of it ! (yes i did plug it right !)

    Any ideas would be appreciated ! Thank You !


  7. Arnid01 Nov 2021 @ 18:14

    What is the best asio driver to play on Jamulus ? coz the one i got gives me high ping..


  8. Igorlovo04 Nov 2021 @ 17:27

    Recently I have installed Xonar Essence STX in my Dell Precision T3600 work station in order to hook up my shelf speakers via tiny D class amp. I'm encountering an issue with all available ASUS and UNi drivers where the sound output is extremely weak. At 100% system and application volume +100% on my (normally extremely loud) amp, I barely get the equivalent of 5% volume. Same for the headphone jack. At first I thought no sound at all was being played. My onboard sound and AMD hdmi sound are providing proper volume.

    The Xonar Audio Center shows full bars on the band visualization so it's received a signal from the driver but just not outputting properly.

    Just trying to figure out what I can do to get the card working at proper volumes. Any assistance will be appreciated you kind people out there.


  9. bymker24 Nov 2021 @ 15:14

    Hi. Just wanna report that right channel low volume still happens on Xonar DX with UNi-Xonar-1823-v1.80a-r3 with Asus Audio Center and UNi-Xonar-W10-1825-v1.81a-r2 with C-media on Windows 10 x64 21H1.

    Usually it happens after monitor shuts off and turn on(power mode, changed to 1 hour instead of 10 min) with white noise sound(monitor connected to DP, but it's sound turned off in Windows control). Also in first port of soundcard I have microphone maybe it interference somehow, or from some YouTube, Twitch tabs in chrome(no white noise).

    Will try UNi-Xonar-W10-1825-v1.81a-r2 with Low DPC Latency and turning all unusable inputs, outputs in Windows sound control off and use Xonar_driver_restart_v1.1.

    Edited by admin to improve readability.


    • CarvedInside27 Nov 2021 @ 14:12

      I've edited your comment so that the first letter of product names and the first letter of a new sentence is uppercased. Next time please take the time to do these yourself so that your comment is easily readable.

      Now to your issue.
      1. Which motherboard do you have? Which video card?
      2. Did this started to happen recently? Since when did you started getting these issues?
      3. This happens when monitor goes into standby, but the PC is still powered on, right?
      4. You mention 2 issues, low right volume and white noise sound. Do these happen at the same time or one after another? Which one is first?
      5. Does using "Xonar driver restart" fix the issue?
      6. Does installing drivers with "Low DPC Latency" configuration fix the issue?
      7. Check if the same happens with the onboard soundcard. Disable the Xonar sound card in Device Manager and connect the speakers to the onboard soundcard. You may also need to change the default audio playback device in Windows sound.


      • bymker04 Dec 2021 @ 08:40

        1. MAG B550 TOMAHAWK, 2070S
        2.I noticed those after update from Win10 20H2 to Win 10 21H1 or maybe its started with the connection to monitor via DP
        3.Yes to white noise, the default Windows power schedual which turns off monitor
        4.White noise happens after wake up from sleep(not anymore since i changed 10 min to 1 hour and monitor never turns off again) after that right channel volume starts being low. Also right channel can be low without white noise when twitch or youtube tabs open(not sure, cause sometimes everything is ok) for long time in chrome browser
        5.yes, restarting pc also does
        6.no, low volume still can happen. And white noise never happen cause monitor never shut offs again.
        7. i checked those on old motherboard and everything was fine.

        Maybe Xonar DX still working from 2014 till now but software issue pissed me off sometimes.
        Can anyone advise cheap soundcard NOT from Asus?


    • Snk301 Dec 2021 @ 01:43

      I was having same issue (sound becomes unbalanced), tried v1.71.1, v1.75a-r3 and v1.80a-r3 and now I'm back to v1.75a. After some research I found the post bellow and decided to remove referred file (HsMgr.exe), no issues for the last two weeks, not sure if it really fixed the issue but maybe it worth a try. I'm using W10 21H1 in Ryzen 1 Gen platform, my card is Xonar DX.



      • CarvedInside01 Dec 2021 @ 13:44

        Thank you for sharing. Let us know if you experience them again. I want to add that installing UNi Xonar drivers in "Low DPC Latency" or "C-Media Panel" configuration will have HsMgr processes disabled.

        Since you have a AMD Ryzen system, please make a comment under this page with your motherboard and Xonar card, stating that it's working fine in regards to the Ryzen and Xonar card compatibility issues.


        • Snk304 Dec 2021 @ 01:05

          Happened again today, when I was playing a video, volume at right side becomes almost inaudible. No idea of how to fix, hope it's not hardware fault.


          • CarvedInside04 Dec 2021 @ 18:57

            When does this happen? When monitor goes to sleep like bymker's issue or randomly when the system is fully active?


            • Snk305 Dec 2021 @ 14:02

              Randomly, I was playing game, I closed and went to watch a video, it happened.


              • CarvedInside06 Dec 2021 @ 16:05

                Then it does not look like the same issue as bymker. Yours is caused by something else, I think it's a hardware defect with the card.


      • Iso25 Dec 2021 @ 17:12

        This happens to me as well.. It happens whenever I exit a video I'm watching via Firefox. Rebooting the computer will fix it. I have the Low DPC configuration installed on a Xonar DX. Also using Peace with Equalizer APO.


  10. DerAusgewanderte25 Nov 2021 @ 21:47

    Maybe a related issue that bymker has above. When the monitor turns off the audio goes low volume. But in addition the audio stays distorted when the monitors come back on. It sounds like it's slowed down. Quite interesting when listening to music in Spotify. What fixes this is a switch of the source between Digital (I have optical cable connected to speakers) and regular output on the xonar device. I high some loud crackling and it's back to normal. This doesn't change the issues on websites and I hear low pitch voices from folks and they hear echoes. I have to reboot to straighten this out.
    I've just now disabled the Nvidia drivers and all other crap to see if that helps. More later. I couldn't find anything about the low pitch. That seemed bizarre to me.


    • CarvedInside27 Nov 2021 @ 11:52

      1. Tell me your sound card, Xonar driver version, motherboard, the voice chat program and Windows version?
      2. Did this started to happen recently? Since when did you noticed this issue?
      3. This happens when monitor goes into standby, but the PC is still powered on, right?
      4. I count 3 distinct issues once the monitor goes into standby: low volume in audio playback (spotify program and others), low pitch voices in voice chat applications, others hear echoes when you voice chat with them. Is that correct?
      5. Check if these issues are solved if you run Xonar driver restart.
      6. Check if the same happens with the onboard soundcard. Disable the Xonar sound card in Device Manager and connect the speakers to the onboard soundcard. You may also need to change the default audio playback device in Windows sound.


      • InsideInfinity05 Feb 2022 @ 10:04

        hey there,

        so i'm having the exact same issue where (sadly often) the volume of the right front speaker in my 5.1 configuration will go down to nearly inaudible levels. This issue started around April/Mai 2021 for me and has become worse after i updated my bios to the newest version and my chipset driver aswell..

        My system is a AMD Ryzen 2600x, 16gb 3200mhz ddr4, GTX 980ti, ASUS XONAR DX soundcard, Windows 20h2 (currently)
        My Unixonar driver is the UNi-Xonar-1823-v1.80a-r3.

        Before this issue started, everything was working perfectly fine for years. Now this issue is killing me. I've tried almost everything imaginable to fix this issue except reinstalling the driver (or any other one) because i really don't want to do this unless i've no other choice.

        A PC reboot always fixes this issue and disabling the xonar soundcard in the device manager and reenabling it right away nearly always fixes this issue aswell.

        What i've noticed is that disabling and enabling the sound card doesn't always fix this issue but instead the following happens:

        after disabling and enabling the soundcard the issue is fixed, but ofc the xonar audio center is closed because it closes itself upon disabling the soundcard in the device manager. Once i open the xonar audio center, sometimes the issue comes back right away, at other times it doesn't. i suspect the bug is related to the xonar audio center.

        What i've further noticed is:

        this happens only on specific apps and games. It doesn't happen on others. For example i played new world between october and december 2021 and it didn't happen a single time throughout my 500 hours of playtime (at least related to this game). Same goes for many other games, but there are also many games where this happens.

        For example i'm playing god of war now and this happens nearly everytime. I noticed on games where it happens that it always happens upon closing the game. I mean when you check sound before opening the game and all volume levels are identical, the open the game it works flawlessly even for hours upon hours. Once you close the game sometimes everything continues to work, at other times though suddenly this issue happens. Something bricks itself upon closing the respective game. On God of War it happens around every second start and close of the game. On other games its completely different and i haven't figured out how often it happens but i'm 100% it always happens upon closing a game that is affected and can produce this issue.

        Sadly, its not only games where this issue happens. It also happens on youtube/twitch, which can get really annoying (I'm using firefox as my main browser), and it can also happen on my music player (dopamine) and my video player (mpc-hc from the k-lite codec pack which i'm using).

        For me it never happens when the monitor goes to sleep and waking it up, thats the one thing i never noticed. Apart from this i also don't have any issues with the drivers or the hardware at all but this issue is sadly a biggy so i'm kinda hoping someone could find a fix for this ?? Would really appreciate it as i'm loving my xonar dx card otherwise 🙂

        best regards


  11. Bz30 Nov 2021 @ 00:37

    Hello! Anyone running the Xonar STX on Windows 11 (21H2)? I pulled this card out of my old PC on Windows 10 for a new build and cannot get any audio to come out of this card. I've read through the notes above and tried different driver versions. The opamps are seated properly and I do hear the relays switching which means there's power through the molex. Device Manager sees the card and the driver install detects the card. I've also tried disabling all audio devices except the STX. I know the card is working from the older PC and that the onboard audio works on the new.


    • TG141002 Dec 2021 @ 20:20

      I'm running the STX on W11 21H2 just fine using the 1.80a r3 drivers with the C-media control panel.
      I am however only using this card for 5.1 channel sound through optical to my AVR (6 channels, S/PDIF enabled and Dolby Digital Live selected in C-media panel, "Speakers" instead of S/PDIF(It's weird but that's how it works for me) selected in Windows sound settings)
      I haven't tried the analog outputs since I use an external audio interface for stereo & headphone stuff, so I can't say if they work or not.


      • Bz02 Dec 2021 @ 22:42

        Thanks for your comment! I went to give the C-media panel and 1.80a r3 a try (I've been using the ASUS Audio Center default) based on your comment but could not get the driver to install at all. Even going back to the ASUS Audio Center it kept crashing my Windows right when I hear the relays switching during the install. There must be something going on.. I'll have to check over the weekend.


        • CarvedInside04 Dec 2021 @ 18:55

          If you have previously installed v1.81 r2 and did not uninstall them before installing v1.80a r3, then read "How to uninstall 1825 v1.81 drivers" from the post above.


          • Bz05 Dec 2021 @ 04:14

            The crash was happening during the driver install and not the driver uninstall. I tried running the standalone driver cleaner and it ran successfully. I believe the BSOD was driver verifier DMA violation.

            Regardless, after spending a few hours switching between driver versions and reseating the card/components, no luck. I guess I'm at a dead end at this point.


            • Walczyk04 Jan 2022 @ 12:46

              You know, I had a weird issue too! I was able to get it installed, but once I moved the card to another PCI express slot, it stopped working. An uninstall, reboot, reinstall, reboot made it work, but my system is super unstable due to the card!! If I can't get it figured out with some help (it would crash on W10 too but on W11 it doesn't even give a BSOD, supposedly an IRQ conflict) then I am going to have to remove the card. It honestly has been an issue since I upgraded to an x570 motherboard and a ryzen 2 cpu, and 5700xt video card. The crashes are so bad it feels like memory instability, but the crash dumps specifically point to the audio driver cmudaxp.sys C-Media Audio Interface Driver and I hear the relays when it crashes.


  12. Vad12 Dec 2021 @ 23:21

    The BSOD on resuming the system from standby is still happening with the version (Windows 10 21H2). However: it happens only if during going to standby the game "World of Tanks" was running. If I understand correctly, this BSOD is related to the emulation of EAX, so it probably happens only when this feature was being used by some application while going on standby, such as this game.


    • CarvedInside13 Dec 2021 @ 03:50

      Do you have GX (or Xear3D from C-Media Audio Panel) enabled?


      • Vad13 Dec 2021 @ 15:52

        Looks like not. There's no control "GX" in "Xonar DGX Audio center"; I have enabled "Hi-Fi" in it. Below are exported settings, and "EnableXear3D"=0



        • CarvedInside13 Dec 2021 @ 16:57

          Then EAX emulation is not enabled for the Xonar card.

          You could try the following:
          1. Installing the driver with Low DPC Latency configuration.
          2. Try other drivers than 1825 v1.81.
          Let me know if any of these help fix the issue.

          I will trim your registry settings comment, but know that it was received in full.


          • Vad15 Dec 2021 @ 19:19

            Tried with low DPC latency, so far it looks like it's no longer crashing. Will post an update if it does. Thanks!


            • Vad14 Feb 2022 @ 20:12

              The problem (blue screen on waking from standby) is back, and it looks like now it sometimes gives blue screen even when the game was not running when it went to standby.


  13. Walczyk04 Jan 2022 @ 07:26

    Hi, I have a Essence STX I and I have had BSOD issues with "cmudaxp.sys" for over a year now and Windows 11 (which crashes without a BSOD) has only made it even worse, it happens 50% of the time coming out of sleep, and crashes daily or more. When it crashes I can hear the headphone relay click on and off as well. I tracked it down in windows debugger:


    • Walczyk04 Jan 2022 @ 13:29

      I would like to add that I also had crashing and instability issues before involving cmudaxp.sys but I thought I would be resolved of it by using the low latency drivers and xonar switch etc for the headphones, but windows 11 has been even worse. This issue actually seemed to start when I upgraded to an x570 chipset with ryzen 2, maybe it does have to do with memory management? cmudaxp+0x305895 is the object that crashes,
      ffffd702`c2aae990 fffff805`458f5895 : ffffa984`e36aa158 ffffa984`e36aa080 00000000`00000006 00000000`00000009 : nt!KiPageFault+0x440
      ffffd702`c2aaeb20 fffff805`45773fad : ffffa984`ce308740 00000000`00000000 00000000`00000000 00000000`00000080 : cmudaxp+0x305895
      ffffd702`c2aaeb70 fffff805`45779d67 : 00000000`00000006 ffffbe00`f7f7d180 ffffa984`ce308888 ffffd702`c2aaec99 : cmudaxp+0x183fad
      ffffd702`c2aaeba0 fffff805`374cc394 : 00000000`00000000 ffffa984`00000001 ffffd702`00000000 ffffbe00`00000002 : cmudaxp+0x189d67

      If anyone has any more resources and information on how to diagnose this and understand it, please help! I would LOVE to know more about how this all works. Thank you all again.


  14. Gregosaurus_Rex08 Jan 2022 @ 00:58

    Hello there.
    I live in France, so please be indulgent with my language mistakes 😉
    I come to discover this (YOUR!!) wonderful website, to bypass the odd "forever-beta-stock/stuck!-never-updated-drivers" from Asus support...
    I have found a fantastic (old) Xonar Essence ST to install on one of the two nudes PCI port of my motherboard, so I was wondering what driver I could Install on my system : it runs Windows 11 (21H2 version, Build 22000.376), Asus Z77A motherboard, i5-3570K CPU, nVidia 1060 6Gb graphic card and 16 Gb ram) : a good value ten years old configuration.
    So UNi Xonar STXII 11.5 v1.80b r3 would be fine if I follow the requirements on your chart..? Or UNi Xonar W10 1825 v1.81a r2 or UNi Xonar 1816/1823 v1.80a r3 for better "stability"? I'm a little bit lost...
    Have you recommendations to tell me about installation of the card : Install driver before installation of the card? how to block windows updates just for the card?
    Thank you very much, and have a nice day!


    • CarvedInside08 Jan 2022 @ 11:54

      Go with v1.80a r3. Try other drivers if you have issues and want to check if they don't manifest with other drivers. Install the card, then install the driver. You don't need to block Windows driver updates because there are no driver updates there for ASUS Xonar cards.


  15. ACDNate26 Jan 2022 @ 19:10

    Hello all. Thanks for keeping this driver package alive.

    i have one issue I haven't ben able to resolve Xonar DSX 7.1 that I suspect may be an issue with the card itself but was looking for some guidance.

    I have disabled all other outputs and configured the sound via control panel. I'm using front/side/rear outputs. Rear and Side test fine no issues. Left/Right channels work.

    Front output I am not getting stereo. left/right blend into each other. While playing a stereo source if I drop either left or right down to zero via the mixer, i still get sound from that speaker output. The overall sound does decrease when I do this. Makes no difference if done on left or right, same result.

    I'm going to pick up a new cable to see if that may be the issue, but what else can i look at?

    Thanks for any help anyone can provide.



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