Chromecast device (LG TV) not visible in Roon settings (ref#Q5RBP7)

RAJ_KHARA · October 8, 2025, 11:42pm

What’s happening?

· Other

How can we help?

· None of the above

Other options

· Other

Describe the issue

I have a nucleus one, using it as a roon core. Streaming on the ipad via lumin streamer. As of recently in the roon app, under settings/display my Lg tv does not show up as a chromecast device,so i am unable to display the now playing info on my tv. My tv is the lg65g4.

Describe your network setup

netgear modem/router c6300

alex_h · October 9, 2025, 8:32am

Good day @RAJ_KHARA !

Thanks for reaching to us.

First thing, can you please clarify whether you have at home any L3 switches that may be blocking traffic ?

Did you enable any multicast traffic blockers on your router ? (Roon relies on mDNS for discovery).

And the last thing I want to point out is that LG G4 seem to be unreachable in the off state as chromecast receiver:
https://www.reddit.com/r/LGOLED/comments/1dworys/chromecast_issues_with_lg_g4_while_tv_is_turned/
.

Can you please confirm whether you are trying to stream on it while it’s on ?

THanks!

Looking forward to your replies!

Regards.

RAJ_KHARA · October 9, 2025, 6:04pm

I am streaming via the lumin streamer to my anthem receiver. Using the LG tv just to display album art snd lyrics. Don’t have any blockers or settings enabled within the router.

RAJ_KHARA · October 9, 2025, 6:13pm

Also to point out, when the lg is on roon/settings/audio shows the lg as an AirPlay device and not a chromecast device. As of a couple of weeks i was able to display album art on tthe lg. thanks.

vadim · October 9, 2025, 6:52pm

Hello @RAJ_KHARA

Would you kindly let us know the WebOS version that you are currently running?

RAJ_KHARA · October 9, 2025, 6:59pm

I am running webos 25

vadim · October 9, 2025, 7:12pm

Hello @RAJ_KHARA

Thank you for the update, since the WebOS 25 LG supports the Chromecast natively.

Displays shouldn’t appear in the Audio devices. Would you kindly share the screenshot from Roon → Settings → Displays?

RAJ_KHARA · October 9, 2025, 7:27pm

I am not at home, but when i click on setting-display, it shows no displays available. On the bottom it gives me the option of copying a link for web display

vadim · October 9, 2025, 7:36pm

Hello @RAJ_KHARA ,

Thank you for your message. Can you please use the directions found here and send over a set of logs to our File Uploader? Once logs have been uploaded, please let us know so that we can check the server for your files,

Additionally, please share the IP address of your LG TV, thanks!

RAJ_KHARA · October 9, 2025, 8:23pm

Sounds good, will do

vadim · October 9, 2025, 8:29pm

Hello @RAJ_KHARA

Please update us here when it is uploaded

RAJ_KHARA · October 9, 2025, 8:37pm

Just to clarify, i am using my ipad as a roon remote and a nucleus one, so i would be sending you over the nucleus server logs correct ?

benjamin · October 9, 2025, 10:02pm

Hey @RAJ_KHARA,

Yes, that’s correct - you’ll need to use your Windows remote to gather your Nucleus Roon Server logs.

If you haven’t yet, I’d also reboot your router, TV, and Nucleus and see if you run into the same issue.

Thank you!

RAJ_KHARA · October 9, 2025, 10:08pm

ok, got it

benjamin · October 10, 2025, 12:07am

Let us know when you’ve been able to successfully upload them, thank you @RAJ_KHARA!

RAJ_KHARA · October 10, 2025, 4:06am

NucleusOne roon server log files uploaded. The IP adress of my Lg tv is 192.168.0.98

vadim · October 10, 2025, 2:31pm

Hello @RAJ_KHARA

We have reviewed the logs you provided, and here’s our analysis:

1. Chromecast Device Disconnection

[cast] lost device CastDevice[DeviceId=OLED65G4SUB...] because it disconnected
IOException in RTSP request: Unable to read data from the transport connection: Connection timed out
OPTIONS failed: Result[Status=NetworkError]
10/08 21:23:31 [Local 10/08 14:23:31] Info: [cast] lost device CastDevice[DeviceId=OLED65G4SUB.DUSQLJR-9e0f5a1c5a3343e7bc13eb358f5ec94b._googlecast._tcp.local, Name=OLED65G4SUB.DUSQLJR, Address=192.168.0.98] because it disconnected

The logs show that shortly after the Chromecast connection attempt, the TV disconnected.
The timeout on the RTSP/OPTIONS request indicates that Roon was unable to maintain a stable communication with the Chromecast service on your LG TV.
This explains the issue you reported with Chromecast screen issues.

2. AirPlay Pairing (Secondary Observation)

pair-verify #1 failed: 403 Forbidden, attempting pairing
10/08 21:23:30 [Local 10/08 14:23:30] Warn: [airplay/clientV2] [192.168.0.98] pair-verify #1 failed: 403 Forbidden, attempting pairing
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] pair-setup-pin
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] Sending pair-setup-pin #1
10/08 21:23:30 [Local 10/08 14:23:30] Warn: [airplay/clientV2] [192.168.0.98] pair-setup-pin #1 failed: 403 Forbidden, attempting pairing
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] Sending pair-verify #1
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] pair-setup fail
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] pair-verify #1 Succeeded
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] Sending pair-verify #2
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] pair-verify #2 Succeeded
10/08 21:23:30 [Local 10/08 14:23:30] Trace: [airplay/clientV2] [192.168.0.98] Requesting OPTIONS
10/08 21:23:30 [Local 10/08 14:23:30] Info: [airplay/clientV2] [192.168.0.98] REQUESTING OPTIONS *
10/08 21:23:40 [Local 10/08 14:23:40] Warn: [airplay/clientV2] [192.168.0.98] OPTIONS failed: Result[Status=NetworkError]
10/08 21:23:40 [Local 10/08 14:23:40] Warn: [airplay/clientV2] [192.168.0.98] Failed to get OPTIONS: Result[Status=NetworkError]
10/08 21:23:40 [Local 10/08 14:23:40] Trace: [airplay/clientV2] [192.168.0.98] Connecting to airplay server

The AirPlay pairing initially failed but eventually succeeded.
While AirPlay is working, the logs show minor instability, but it is not the primary cause of your reported issue.

Observations

The Chromecast disconnection appears to be network- or device-specific, not a Roon server problem.
The TV was reachable initially, but the connection could not be maintained.

Recommended Next Steps for Chromecast Stability

Assign a Static IP to the TV

Prevents DHCP-related IP changes that may interrupt Chromecast communication.

Use Wired Ethernet Connection if Possible

Provides a more stable connection than Wi-Fi, reducing timeouts.

Reset Chromecast Pairing on the TV

Press the Settings button on your LG remote.* Go to General > Network > Network Status.
Select Reset Network Settings.
Reconnect your TV to Wi-Fi

Update LG webOS Firmware

Ensures the latest fixes for Chromecast/RTSP stability are applied.

Check Network Restrictions

Temporarily disable firewalls or Wi-Fi isolation features that could block Cast traffic.

RAJ_KHARA · October 10, 2025, 5:24pm

Thanks. I am able to access the static IP settings, however not sure of what values to put in. Need a little guidance.

benjamin · October 10, 2025, 6:40pm

Hey @RAJ_KHARA,

Here are some steps specific to your router:

https://help.comporium.com/residential/s/article/How-Do-I-Set-Up-a-Static-IP-with-My-Netgear-6300-Router

Let me know if this helps!

RAJ_KHARA · October 10, 2025, 8:37pm

My lg tv has it to where i can enter a static IP address in settings of the wifi network of the tv. Do I still need to mess with my router settings as well.