Playback causes internet crash with Grimm MU1 using Roon (ref#93VMXJ)

What’s happening?

· I am experiencing freezes or crashes

How can we help?

· I am experiencing freezes or crashes

Other options

· Other

Describe the issue

Purchased a new grimm mu1. After about 3-5 songs, the player stops and my entire internet crashes. I have to reboot my cable modem to make it start working again. I contacted grimm and they said it's a roon problem lol. Thanks

Describe your network setup

Cable modem, basic router

Hi, @pmartens308!
Thank you for reaching out to us with your issue.

I would recommend first rebooting your router and any associated network equipment.
Then reboot the Roon Server and see if that fixes the issue.

I’d also be curious to see your DNS settings, both on your Router, Server, and Remote.

I rebooted every device multiple times, even try to reinstalling roon.

Hi @pmartens308 ,

It is strange that you are saying that Roon on the Grimm is causing issues here, according to our diagnostic system it looks like the RoonServer on Grimm hasn’t been active in the last 2 days. Is there any way for you to get manual RoonServer logs from the Grimm and upload them to the below link for analysis?

https://workdrive.zohoexternal.com/collection/8i5239cc05950ac07456889838d9319545a82/external

Also, please let us know the model/manufacturer of your router in case the issue is specific to your router type.

Router is a TP Link ac1750. How do I retrieve Roon logs from the grimm? I just started up the grimm and it played 3 songs and the internet crashed again. I even reinstalled roon on a brand new microsoft surface.

Hi @pmartens308,

You can follow these instructions to retrieve diagnostic logs from your RoonServer instance. You can upload logs at this upload link.

However, provided your Grimm has a reliable pathway to the internet, logs should automatically upload as soon as RoonServer next comes online. Our servers haven’t seen the machine or your RoonServer instance in over six days.

If router firmware is shutting down after RoonServer comes online and initiates a discovery process, the underlying network is likely suffering from multicast flooding. This usually arises from misconfiguration in router/switch settings or the overall topological configuration.

Again, the reason for no data for a week is because it crashes every time I reboot the modem and I’m growing tired of it lol. I tried it again this morning, it of coursed crashed after 3 songs but I managed to retrieve a log. It’s uploaded to the above link. Would love to get this working because the grimm/tambaqui combo sounds amazing when I get to hear the allotted 3 songs!

Hi @pmartens308,
Sorry about the long response time. Can you let us know what you named the log set? I wasn’t able to locate it by searching with your username.

It was RoonServer_log

Hey @pmartens308,

Thanks for the update - unfortunately, it looks like you’ve sent over a log file from your Windows machine running Roon Server, not the Grimm device.

However, it looks like we were able to recover a diagnostic report from the Grimm, and see repeated network errors, for example:

Warn: [Broker:Transport] [devicedb] While refreshing, status: 999, body: System.Net.WebException: Network is unreachable 

@connor makes a good point above - it may be worth investigating your network setup with the Grimm. Do you have any third-party antivirus or security software active within your router or network that could be interfering?

There are failures in reaching your Tidal account as well:

Trace: [Broker:Media] [tidal] transition loginstatus from StartupWithCredentials to UnknownError
Info: [Broker:Media] [library] releasing all genres since we have no streaming service

Are you able to reinstall RoonOS on the Grimm? You’d be able to do this from accessing the webUI of the Grimm.

  • Access the MU1’s configuration page through your web browser.
  • Find its IP address from your router or a network scanning tool (like Fing).
  • Type the IP address into the browser (e.g., http://192.168.x.x) to open the device’s web interface.

Feel free to share a screenshot of this too, if possible. Thank you! :raised_hands: