Roon remote on iPhone unable to locate Roon Server after NAS reboot (ref#4GQQVJ)

Is Roon Server running?

· Yes, Roon Server is turned on and running.

What do you see on your screen?

· "Looking for your Roon Server"

Please try to restart your Roon Server by closing the Roon app in the taskbar or rebooting your Roon Server machine.

· No, the issue remains the same

Please try to restart your network setup by unplugging, waiting 30 seconds and then replugging in your networking gear.

· No, the issue remains the same

Please select how you've connected your Roon Server to the internet

· Roon Server is connected by *WiFi*

Have you checked your firewall settings to ensure that Roon is allowed through?

· Roon still won't connect even after checking this aspect

Have you verified that Roon Server is on the same subnet as your Remotes?

· My Remotes and Server are on the same subnet and I still can't connect

Sometimes the issues can be resolved with a reinstall of your Roon Remote app. Let's try to perform a reinstall and see if it helps.

· I've reinstalled the Roon Remote but it did not help

What is the operating system of your Roon Server host machine?

· Roon on a *NAS* (Synology, QNAP, ASUSTOR)

Select any of the following components that are present in your local network setup

· None of the above

Describe the issue

I did previously have a well-functioning Roon system but at some point in the past 6 months something caused it to stop working. I reinstalled the server package on my Synology NAS today after the package on the NAS would repeatedly show as "manually stopped" about 3 seconds after I would try to run it.

Since the reinstall today, the server seems to be working and my Mac and my wife's iPhone are able to connect to it and play music to at least one of my zones (a Sonos).

However, the Roon remote on my iPhone says 'Choose your Roon Server ... Looking for your Roon Server'. During a restart of the NAS that hosts my Roon Server (while troubleshooting), this iPhone showed an icon for the server (with a red dot), including its IP, which then disappeared upon reboot of the NAS/Server.

Describe your network setup

The NAS is connected to the router (Nokia BGW320-505 provided by AT&T) with an ethernet cable, is showing as having a fixed IP, and my iPhone is on the same subnet/mask.

Is your Roon Database is on a volume that is connected to your NAS via USB?

It is, and I did have to eject and plug-in the usb drive for roon to access its database - but since then I have multiple devices/remotes which can access the server just fine. The issue seems specific to this one iPhone, but I’m unable to see any difference in its configuration, and I have reinstalled roon on it already with no luck.

Hi @Joseph_Hewlings,

Diagnostics indicate that there are upstream connectivity issues with RoonServer as well - tracks from streaming services are timing out during prebuffer, and Roon can barely keep up with the audio stream.

The iPhone itself is visible to RoonServer, but unable to retain a connection for long enough to even present a connected status in the UI. The remote keeps disconnected.

The most likely culprit here is WiFi interference or a traffic routing problem as a result of the network topology and settings. Is there any other hardware equipment in your network setup besides this Nokia router? What about managed switches, mesh nodes/access points, or any other hardware?

In particular, what is in the network path between RoonServer and the internet upstream?

Connor - thank you! This is very odd. I do have a WiFi repeater (TPLink RE605X, connected to the primary WiFi network) which provides a second network to improve coverage. My living room zone was wired to that repeater as it struggles to pick up the primary WiFi, and after unplugging the zone from the repeater my iPhone is now able to connect back to the Roon server (even via the secondary WiFi…?) although I’m back to the original issue of the living room not being able to play music reliably - I’ll try running Ethernet.
Are you able to rerun diagnostics now and see if the issue you noted persists? I checked a couple of zones and streaming appears to be ok for now. Thanks again for the help!

Hey @Joseph_Hewlings,

Thanks for the follow-up! Running ethernet is definitely a good move in this case, as bandwidth likely couldn’t keep up with both your iPhone and your living room setup.

We’re not seeing any iPhone related issues, so you should be good to go there! In regards your living room zone, we noticed a few things going on that could be leading to your issues:

  1. the Moon device is increasingly becoming out of sync. There are warnings indicating long RTT sync times with the Simaudio MOON MiND device. Longer values (147,000us and 347,000us) suggest network latency or synchronization issues between the audio device and your server.

We’re also seeing “drift” values (-62103us and 348661us) indicating that the timing between devices is increasingly out of sync, causing playback instability.

  1. Server-side buffer overruns seem to be reoccurring within the system. This means the temporary storage for the audio data filled up faster than it could be processed. This could be due to high network latency or other performance issues, causing the system to be unable to send audio frames smoothly.

The system tries to recover from the buffer overrun, but ultimately it fails to continue streaming audio, resulting in the track stopping.

Let us know how setting up an ethernet connection from the Moon device to your Roon Server performs! :+1:

This is a problem when you have multiple external USB drives on a Synology NAS (I am presuming that is your brand of NAS?)…you cannot depend upon the drives having identical drive identifiers through reboots.

And unplugging the drive with the unit on could wind up causing data corruption depending upon what’s going on with the drive at the time.

The best solution is to use an external eSATA drive, which will maintain its identifying designation to Roon across reboots.

Some good hardware for that is described here:

SanDisk Ultra 3D NAND 250GB Internal SSD - SATA III 6 Gb/s

Vantec 2.5" SATA 6Gb/s to USB 3.0/eSATA HDD Enclosure, Black Color

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