Core Machine (Operating system/System info/Roon build number)
2012 Mac Mini w/Joule V LPS, running Catalina 10.15.3
2.6 GHz quad-core Intel Core I7
16 GB 1600 MHz DDR3
SSD internal drive, personal music library on external SSD drive.
Roon Core 1.7 (Build 571)
Remotes are any of two iPhones, two iPads, or a MacBook Pro. Results are consistent across all devices.
Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)
- UBEE modem (ISP provided.)
- Mac Mini is hardwired ethernet to Linksys Velop mesh network parent node in a remote room. No switch.
- WiFi to Linksys Velop child node near stereo system.
- Hardwire ethernet from child node to UpTone EtherRegen B-side
- Optical ethernet from EtherRegen A-side to Sonore OpticalRendu
- USB from OpticalRendu to Matrix Audio X S/PDIF converter
- HDMI/I2S from Matrix to PS Audio Directstream DAC
Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)
As above: OpticalRendu to Matrix X S/PDIF to PS Audio Direcstream DAC.
No upsampling, no DSP.
Description Of Issue
Playing certain, specific tracks causes Roon to stop playing, and enters a state that I’ll call “churning”. While Roon displays that the track/album will play (cover art, track list, etc.), it never gets started. The time counter stays at 0, and the time scrubber shows a blue light traveling back and forth continually. It stays in this state until intervention (restart of Roon Core).
This behavior is perfectly repeatable on given albums/tracks that I’ve identified, below. I’m pretty certain that it happens on some other albums, but I’ve not been tracking those.
When churning happens, I can search Roon for other material and select, but those choices will not play until intervention. During churning, I can use an iPhone to play Roon to the iPhone’s Audio Zone, as long as it’s not an affected album/track. But, this same behavior happens on the iPhone or iPad: Play the suspect track and Roon on that device will churn.
One such track is Leonard Cohen’s “You Want it Darker”, which is one of my favorite songs. I used to play that track nightly. Now I can’t get it to play via Roon at all. At times, I’ve gotten other tracks on the album to play, but at least two tracks on the album cause churning.
Another problem album/track is the Notting Hillbillies “Missing, Presumed Having a Good Time.” Previously, I could play the first two tracks and the third track would cause churning. This happened repeatedly. Now I can’t get anything on the album to play.
I used to reboot the Mac Mini in order to recover, but I’ve discovered that if I quit and restart Roon Server (Core) on the Mini, I can get back to normal functions much more quickly.
This is an annoying behavior because I never know when a track will cause Roon to hang up, interrupting an otherwise enjoyable listening session. For the most part, though, I could play Roon Radio all day without a hitch, or select albums or playlists that I know will play through. Most of the time things are fine.
After giving up while Roon is churning, if I choose another album, that album doesn’t play. No album or track will play. The timeline shows the track’s waveform, but there is no sound and the scrubber never moves. Just frozen in time. Again, I can choose other material, but it won’t play.
Once or twice, if I chose a different track and waited a long time, something might play. No rhyme or reason on that. IF this happens, I often get “This track is not currently available from Qobuz”, although clearly it is available.
I can play both albums/tracks on Qobuz desktop app.
When any iteration of Roon Remote on any device churns, it’s not likely to come back to life. I’ve never seen that happen.
After quitting and then restarting Roon Server, CPU usage spikes up to 200% for about 30-60 seconds, during which the Roon Remote screen stays black with the white Roon logo, and then it comes back to life. Probably normal. When Roon returns, whatever album I had been trying to play plays fine, except for the two albums in question.
Once the churning begins, say, on iPhone, I have to quit Roon Remote and restart. After restart, choosing another album will play fine. “Darker” always fails.
I replaced the OpticalRendu with an UltraRendu. Same results.
Logging out of and in to Qobuz yields the same result.
I’ve run First Aid on all disks.
There are no known network issues; everything else in the house works as expected.
@support, I hope you can help unravel the mystery.