Hi - I have lately started having severe audio distortion through HDMI output of my NUC ( NUC10i7FNH) into my Oppo UDP-205. To isolate the issue I plugged the HDMI directly into my AVR and the issue persists. I have also switched HDMI cables and that did not help either. Happens on both stereo and multi-channel audio. I can confirm that this issue is recent but I am not sure if its related to any of the recent Roon OS updates. USB audio works fine.
My Rock is still on Build 254. I have a done a re-install but never got it updated to 256.
What does the distortion sound like? I had some issues with a MeLE Quieter3Q. I had to change some pipewire configuration parameters to solve my HDMI problems. It sounded like a severe slow down or wrong samplerate.
A reboot of the MeLE Quieter3Q solved the problem too.
AceRimmer
(Smoke me a kipper, I'll be back for breakfast!)
5
It sounds like you might be clipping, is your clipping indicator turned on? This toggle is to be found in the headroom management section of DSP…this then would show red in the signal path if it is clipping… possible solution would be to turn dsp off or to lower the headroom even further from current -3db
Thanks a lot everyone for your suggestions. I will try these and report back. I have clipping indicator turned on and it never turns red. Strangely enough I have not made any changes to any of my set up or configurations and this problem has only started occurring recently. I don’t believe the NUC BIOS would update automatically and any change at the NUC level is only an update to Roon OS (build 254). I am wondering if I should try installing the early access build and see if that helps.
Hoping someone from Roon technical support would advise.
I had this happening when I wasn’t using an Ultra High Speed HDMI (HDMI 2.1) and setting the HDMI display resolution to 4K (60Hz) on my mini-pc. Switching my old HDMI cable (probably HDMI 1.4) with a new Ultra High Speed HDMI (HDMI 2.1) solved my problems.
I set max sample rate on the NUC to 48 KHz and everything plays fine now. I will keep it that way till a fix is found. But its clear that its a sample rate problem.
Unfortunately I don’t have another set up I can use to recreate the same signal path.
Got it. Thanks for letting me know! If possible, I’d be curious to see if the distortion occurs when plugged into a TV via HDMI. Or, if the HDMI output from another PC also exhibits this issue.
My same/similar issue only occurs with NUC ROCK Roon Core HDMI output (5.1 Surround Sound FLAC files stuttering via NUC HDMI output running ROCK) . A separate Ubuntu Sever Roon Bridge endpoint I just added (because of this issue) has no problem at all and neither does my Blu-Ray player or Apple TV. Are you able to test NUC ROCK Roon Core HDMI output with 24bit 88.2khz 6ch (or above) output to see if it exhibits the same issue @zenyatta80 are experiening?
Hi @benjamin I’ve already tried directly through my AVR bypassing the Oppo. Same issue occurs. I don’t have another setup I can try unfortunately, and based on @Bryan_Nieman’s post above guess the issue can be pinned down to the NUC. Again I reiterate that this has started occuring since Nov or so.
I think you’re correct in that it may be hardware related. After researching your issue a bit more, we were able to find similar instances of issues relating to the HDMI audio driver.
Hi @benjamin I’m happy to give this a try however the article doesn’t list my NUC as being applicable for this fix. I have a NUC10 whereas the article says this is for NUC11.
My apologies, our team did mention this when discussing and I had forgot to mention that in my reply. It would still be a good thing to test regardless.
No need to do a full reinstall, just flash twice as per the instructions above and then follow the instructions below on re-setting your BIOS:
