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Black Screen, Sound Only: Cyfrowy Polsat Go App Screen Transmission to Toshiba TV

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  • #1 19287597
    Santec
    Level 2  
    Posts: 4
    Rate: 5
    Hello.
    I have a problem with the Cyfrowy Polsat go application, namely that when I transmit the screen from the phone to the Toshiba TV, the TV screen shows a black screen with sound. The thing takes place only on the Cyfrowy Polsat Go application. For example, Netflix screencasting works flawlessly.
    Any ideas?
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  • #2 19289229
    artbi881
    Level 30  
    Posts: 1186
    Help: 130
    Rate: 260
    Then you have something wrong with the Cyfrowy Polsat Go application.
  • #3 19289601
    Santec
    Level 2  
    Posts: 4
    Rate: 5
    The app was updated when that didn't work reinstalled again to no avail. Phone for Android 10 Realme 7 and Huawei p30 pro. So maybe another reason?
  • #4 19291366
    artbi881
    Level 30  
    Posts: 1186
    Help: 130
    Rate: 260
    Once on some xxx I read what an update is - fixing old bugs and making new ones.
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  • #5 19291457
    Santec
    Level 2  
    Posts: 4
    Rate: 5
    So it looks like I have to wait for the next update ?
  • #6 19291486
    artbi881
    Level 30  
    Posts: 1186
    Help: 130
    Rate: 260
    Let me know how it goes and the application will work.
  • #7 19291801
    Santec
    Level 2  
    Posts: 4
    Rate: 5
    If anything changes, I will of course let you know. But I doubt it will happen anytime soon...
  • #8 19868519
    mciborowski88
    Level 1  
    Posts: 1
    Rate: 10
    I'm in the same situation. Toshiba TV.
    There is no sound on Xiaomi 11t, so the whole screen mirroring works. Even when I download the bottom bar in the cp app, it displays it.

    On the other hand, on the Galaxy s7, the connection crashes when trying to start a movie.

    On the channel plus app, the same. Google must have screwed something up.
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  • #9 19902640
    sylwiakrzesniak
    Level 1  
    Posts: 1
    Rate: 20
    It's the player's settings fault. You have to go to the settings and there is the option "video decoding by my device" or somehow you should turn it off if it is turned on, or turn it on ... I don't remember, maybe turn it off .... After that, the problem should disappear
  • #10 19908366
    Czekolada160
    Level 1  
    Posts: 1
    Rate: 15
    Hello,
    Does anyone know how to solve the problem?
    I do not use the application, but I have the same problem when using the Polsat Go website - the phone connects to the TV and displays everything except the image of the series, you can also hear the sound, ads are shown, and then the image disappears. I've never had this problem with any other site before.
  • #11 20009701
    borg18
    Level 12  
    Posts: 636
    Help: 8
    Rate: 37
    I have the same problem.. Has anyone managed to solve it?
  • #12 20114935
    bolotcz
    Level 1  
    Posts: 1
    Rate: 15
    1. Developer options or in the settings in the search manually type "wireless" and the wireless screen will pop up.

    2. Wireless screen certification. Turn on.

    3. Settings -> connection and sharing -> wireless display

    4. We activate the wireless screen and now the hidden certification options will be active.

    5. "Operating Channel" change the channel from automatic to "1"

    It should also work on Realme phones.
  • #13 20440806
    marcinmasiak84
    Level 1  
    Posts: 1
    Rate: 6
    I have the same Realme GT2 Pro phone and Toshiba TV, but neither Disney nor HBO nor WoW works, no picture anywhere.
    I went into developer options, ticked show certification options, but I can't find it anywhere on Realme GT2 Pro
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  • #14 20453794
    JaidulMia
    Level 1  
    Posts: 1
    Rate: 2
    One solution to try is to use a different method to stream the content from your phone to the TV, such as using a Chromecast or an HDMI cable. This may provide a more stable connection and bypass any compatibility issues between the app and the TV.

    Alternatively, you could reach out to the customer support team for Cyfrowy Polsat Go and/or Toshiba to see if they have any suggestions or updates that may resolve the issue. They may be able to provide more specific troubleshooting steps or software updates to help resolve the issue.

    It's also possible that the issue may be related to the specific model of the Toshiba TV, so checking for any known compatibility issues or updates may also be helpful.
  • #15 21535504
    boskiogier0
    Level 2  
    Posts: 2
    Hello. I have a solution to the black screen in Mozilla Firefox. Through this browser, if you turn on Cyfra or Netflix or whatever, and from your phone give projection or screen sharing etc, then in addition to the sound the picture will also be there. Regards
  • #16 21702331
    dsamian11
    Level 5  
    Posts: 9
    Rate: 1
    I have the same problem with my Thomson TV and the Disney+ app
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Topic summary

✨ Users report an issue with the Cyfrowy Polsat Go application where screen casting from Android phones to Toshiba TVs results in a black screen with audio only. The problem is specific to this app, as other streaming services like Netflix function correctly. Attempts to resolve the issue by updating or reinstalling the app have failed. The problem also occurs when using the Polsat Go website via screen sharing. Some users suggest the issue may relate to video decoding settings within the app, recommending toggling the "video decoding by my device" option. Others propose enabling wireless display certification and manually setting the operating channel to "1" in developer options to improve compatibility, particularly on Realme devices. Alternative solutions include using different streaming methods such as Chromecast or HDMI connections to bypass app-to-TV compatibility issues. A workaround involves using Mozilla Firefox browser for streaming, which allows both audio and video to be transmitted correctly during screen projection. The issue may stem from app or device compatibility problems, possibly linked to recent updates or Google-related changes affecting casting functionality.
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FAQ

TL;DR: "Miracast supports up to 1080p HD video" and if you see black‑screen‑with‑sound while mirroring, try settings tweaks or certified casting below. [Wi‑Fi CERTIFIED Miracast]

Why it matters: This helps Toshiba TV owners and Cyfrowy Polsat Go users quickly restore picture or pick a reliable workaround.

Quick facts:

  • Miracast supports up to 1080p HD video and 5.1 surround sound, so network and device setup matter. [Wi‑Fi CERTIFIED Miracast]
  • 4K streaming often requires HDCP 2.2 end‑to‑end; non‑compliant paths may blank video. [Watching Netflix in Ultra HD]
  • Cyfrowy Polsat Go has a “video decoding by my device” toggle; switching it can restore video. [Elektroda, sylwiakrzesniak, post #19902640]
  • On some Realme phones, enabling Wireless Display certification and setting Operating Channel to 1 fixes picture. [Elektroda, bolotcz, post #20114935]
  • Playing via the Firefox browser on your phone, then mirroring, restored both audio and picture for users. [Elektroda, boskiogier0, post #21535504]

Quick Facts

  • Miracast supports up to 1080p HD video and 5.1 surround sound, so network and device setup matter. [Wi‑Fi CERTIFIED Miracast]
  • 4K streaming often requires HDCP 2.2 end‑to‑end; non‑compliant paths may blank video. [Watching Netflix in Ultra HD]
  • Cyfrowy Polsat Go has a “video decoding by my device” toggle; switching it can restore video. [Elektroda, sylwiakrzesniak, post #19902640]
  • On some Realme phones, enabling Wireless Display certification and setting Operating Channel to 1 fixes picture. [Elektroda, bolotcz, post #20114935]
  • Playing via the Firefox browser on your phone, then mirroring, restored both audio and picture for users. [Elektroda, boskiogier0, post #21535504]

What causes a black screen with sound when mirroring Cyfrowy Polsat Go?

A common cause is the player’s video decoding mode conflicting with mirroring. In Cyfrowy Polsat Go settings, toggle “video decoding by my device” to the opposite state. Restart playback after the change. This simple switch can restore the picture. [Elektroda, sylwiakrzesniak, post #19902640]

How do I change the Cyfrowy Polsat Go video decoding setting?

Open the app’s player settings. Find the option labeled “video decoding by my device.” Switch it to the other state, then restart the stream. Test both positions to see which one works with your TV. [Elektroda, sylwiakrzesniak, post #19902640]

How can Realme users fix this by changing the Wireless Display channel?

Enable Wireless Display certification, then set Operating Channel to 1. “Operating Channel change the channel from automatic to ‘1’.” How‑To: 1. In Developer options, enable Wireless display certification. 2. Settings > Connection & sharing > Wireless display, turn it on. 3. In Wireless display options, set Operating Channel to 1. [Elektroda, bolotcz, post #20114935]

I can’t find “Wireless display certification” on Realme GT2 Pro—what then?

One report notes the GT2 Pro lacks visible certification options even with Developer options enabled. If you can’t find it, skip this method. Try the other fixes listed in this FAQ instead. [Elektroda, marcinmasiak84, post #20440806]

Does using Firefox on the phone restore video when mirroring?

Yes. A user confirmed that playing Cyfra/Netflix in Firefox, then projecting, shows picture plus sound. “The picture will also be there.” Start playback in Firefox before starting screen sharing. [Elektroda, boskiogier0, post #21535504]

Netflix casting works, but Polsat Go is black—why?

That mix is reported: Netflix casts fine, while Polsat Go mirrors as audio‑only. It suggests app‑specific handling differences. Apply the decoding toggle or the Realme channel steps above to regain video. [Elektroda, Santec, post #19287597]

My Xiaomi 11T has no sound, and Galaxy S7 crashes—what now?

Reports show varied symptoms by phone: no sound on Xiaomi 11T and connection crash on Galaxy S7 at playback start. This indicates device‑specific compatibility. Use the other listed workarounds. [Elektroda, mciborowski88, post #19868519]

Is the Canal+/Channel+ app affected similarly?

Yes. One user reported the same mirroring problem in the Channel+ app. That points to app‑level behavior across multiple services. [Elektroda, mciborowski88, post #19868519]

Will Chromecast or an HDMI cable avoid the black screen?

Yes. Casting with a Chromecast or connecting via HDMI generally bypasses phone‑TV mirroring quirks. This alternative offers a more stable path for protected playback. [Elektroda, JaidulMia, post #20453794]

Why do ads show video, then the episode turns black when mirrored?

A user observed that ads display fine, but the show video disappears while audio continues. This aligns with content handling differences. Use one of the listed workarounds to regain picture. [Elektroda, Czekolada160, post #19908366]

Could HDCP/DRM be blocking 4K or protected content?

Yes. Ultra HD playback requires HDCP 2.2 across the chain. Lacking HDCP can cause blank video or quality drops. If mirroring isn’t HDCP‑compliant, protected content may refuse video. Use a compliant device for 4K. [Watching Netflix in Ultra HD]

Do app updates help, or should I just wait?

Install updates and retest, but manage expectations. As one user noted, updates “fix old bugs and make new ones.” Recheck mirroring after each app or OS update. [Elektroda, artbi881, post #19291366]

Is this specific to Toshiba TVs?

This thread centers on Toshiba sets. Multiple reports mention Toshiba with the described symptoms. That’s the environment users here tested against. [Elektroda, mciborowski88, post #19868519]

What’s the fastest workaround if I need to watch now?

Open the service in Firefox on your phone, start playback, then mirror the screen. Users report this restores both picture and sound without extra hardware. [Elektroda, boskiogier0, post #21535504]
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