Forum Discussion

Tk44's avatar
Tk44
Reel Rookie
8 months ago

Help Roku Ultra 2024 Dolby Atmos

Currently bought new #2024RokuUltra and having issues with Roku identifying any type of Dolby Atmos, Dolby vision, HDR content. I have LG 65CX TV playing Roku through back of TV 4K 120 Hz port and my LG SN9YG soundbar plugged into earc port with HDMI cable. Prior to upgrading, I had the 2022 Roku Ultra and had no issues, the Roku player identified all HDR formats, Dolby vision formats, and Dolby Atmos content. Roku support keeps blaming apps but I bypassed the Roku to play LG TV only through those same apps and content works just fine. I have tried factory reset, changed HDMI cables, enabled deep color format, even turned off volume level. Still nothing. Back to force always on double vision or HDR but can never get Dolby Atmos no matter what settings I try. I've tried these on two different 2024 Roku Ultra models. Roku support also said they would follow up but never did. 

app playback
Audio quality
Video quality

14 Replies

  • StreamerUser's avatar
    StreamerUser
    Roku Guru
    8 months ago

    Tk44 

    Latest 4850 firmware version as of 10/15/25 is 14.0.4 build 12222 - update to this build if you haven't already.

    Latest CX firmware version as of 7/11/24 is 04.50.90 - update to that version if you haven't already.

    Otherwise change/verify the following settings:

    4850 Settings:

    1) Settings/System/Advanced System Settings/Advanced Display Settings/Dolby Vision Always on = Off

    2) Settings/Display Type = Automatic (4K Dolby Vision)

    3) Setting/Audio/Digital output format = Passthrough

    4) During playback (any app) Options (*)/Sound Settings/Customize Sound Mode/Volume Leveling & Dialog Enhancement = Off

    LG CX Settings:

    1)  Settings/General/External Devices/HDMI Settings/HDMI Deep Color = On/4K

    2)  Settings/Sound/Advanced Settings/Digital Sound Output = Pass Through

    3) Settings/Sound/Advanced Settings/Select HDMI Input Audio format = Bitstream

    4) Settings/Sound/Advanced Settings/eARC support = On

    Otherwise try

    1)  A different HDMI port on the CX, or connecting the 4850 to the SB.

    2) Turning everything off for a few minutes and back on, and see if that gets different results.

    • Tk44's avatar
      Tk44
      Reel Rookie
      8 months ago

      Attempted all items, nothing worked. It's with all apps not one in particular. Also tried all ports. 

       

      • RokuTakashi's avatar
        RokuTakashi
        Community Moderator
        8 months ago

        Thanks for keeping us posted, Tk44 

        Please note that we have sent your information to the relevant Roku team for further investigation. They will look into this matter, and we will provide updates in this thread as soon as we have more information.

        We hope for your patience and understanding as we work on this.

        Best wishes,
        Kash

    • HawkInOz's avatar
      HawkInOz
      Reel Rookie
      8 months ago

      Just curious, how is 14.0.4 build 12222 later/newer than 14.0.4 build 12900 (which is what my 4850X upgraded to upon initial installation?  That seems counterintuitive, as 12900 is clearly a larger number than 12222... Mine is showing this "upgrade" is available for download, but it sure appears to be a "downgrade".  Not sure I want to take a chance "upgrading" to a lower version number...

    • Jhnmdahl's avatar
      Jhnmdahl
      Channel Surfer
      5 months ago

      Turning off Dolby Vision Always On fixed a lot of issues playing back HDR10 media for me (via a local Plex server).  Seems like a really odd thing to have on by default on the 4850.  Thanks!

      John

  • lmacmil2's avatar
    lmacmil2
    Streaming Star
    8 months ago

    You might get more help on the Roku section of AVSForum.com.

  • RokuTakashi's avatar
    RokuTakashi
    Community Moderator
    8 months ago

    Hi, Tk44 

    Thanks for posting here in the Roku Community.

    We appreciate you for letting us know about the issue you have encountered with your Roku Ultra, and our team would like to gather more details regarding this so we can assist further. Can you please provide the information below:

    • Roku device model, serial number, device ID, and OS version. (this can all be found in Settings > System > About)
    • Tracker ID (when you see this issue occur, press the Home button 5 times, followed by the Back button 5 times, and provide us with this ID)
    • Is this issue happening to a specific channel? If so, can you provide the channel build version (This can be found by selecting the channel on the Home screen and pressing the * button).

    We hope to hear back from you along with the requested details.

    Best wishes,
    Kash

  • VegasRooted's avatar
    VegasRooted
    Newbie
    7 months ago

    Same issue here, with the new 2024 Ultra  4850x...I bought five of these, and was planning to replace my five Ultra 4800x units with them.  So...with the exact same setup (paired with Sony Bravia 90L series TV and Sony Bravia Theater Bar 8), I cannot get the 4850x to output or pass-through anything more than 2.0 channel audio.  Tried every combination of settings  on the Roku, the TV, and the soundbar. Finally, I subbed the 4800x back in, and all is well again, Dolby Atmos all day long.  So frustrating.   

    • RokuEmmanuel-D's avatar
      RokuEmmanuel-D
      Community Moderator
      7 months ago

      Welcome to the Roku Community, VegasRooted!

      Thanks for letting us know about the issue you're experiencing with the audio setup on your Roku Ultra 2024. Don't worry; we're here to assist. 

      To help us with the investigation, kindly provide your device details so we can take a closer look at the problem you're experiencing. 

      • Roku device model, serial number, device ID, and Software Version. (these can all be found in Settings > System > About)
      • Tracker ID (when you see this issue occur, press the Home button five times, followed by the Back button five times, and provide us with this ID)

      In the meantime, you may visit this support article on how to set up your Roku® streaming player for surround sound.

      Please keep us posted. 

      All the best,
      Emman

      • Tk44's avatar
        Tk44
        Reel Rookie
        7 months ago

        Don't waste your time, I did this last time with Roku and nobody did  a thing to follow up. No issues resolved either. Good luck

    • StreamerUser's avatar
      StreamerUser
      Roku Guru
      7 months ago

      VegasRooted 

      If you select and HIGHLIGHT Settings/Audio/Digital output format = Passthrough, what formats are detected? (The box on the right will state the detected formats).

      If you don't see at least DD+ (Dolby Digital+) listed, you wont be getting 5.1 (or Atmos) for almost every streaming service/app (The Roku Channel, P+, and Apple TV aside).

      However, unfortunately OS14 (and most RokuOS versions/builds) has Sound Modes enabled by default (including on a new 4850), and these disable multichannel output, so you need to disable them: 

      During playback press Options (*)/Sound Settings/Customize sound modes/Volume Leveling & Dialog Enhancement = Off

      NOTE:  a Factory Reset will return RokuOS to its default configuration including Sound Modes being enabled by default, so you will need to disable them again afterwards.

      • Derek151's avatar
        Derek151
        Reel Rookie
        6 months ago

        Make sure sound-leveling is OFF

        1. Start watching something
        2. Press the asterisk ()* button on your Roku remote
        3. Select Volume mode

        Set sound leveling to OFF.

        I found this will defeat any Dolby/ DTS auto-detect and set any movie to stereo.   It also compresses everything into a loud jumbled mess.