# BUG: wrong channel configuration disables Realtek SpeakerFill option **URL:** \ **Category:** Get Help\ **Created:** [March 24, 2023, 8:48pm UTC](https://forum.fxsound.com/t/bug-wrong-channel-configuration-disables-realtek-speakerfill-option/1773 "2023-03-24T20:48:42Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![maersovac](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fxsound.com/maersovac/32/905_2.png) [@maersovac](https://forum.fxsound.com/u/maersovac)\ **Post date:** [March 24, 2023, 8:48pm UTC](https://forum.fxsound.com/t/bug-wrong-channel-configuration-disables-realtek-speakerfill-option/1773/1 "2023-03-24T20:48:42Z")
This is my scenario: Using chrome/edge with command line parameter --try-supported-channel-layouts in order to make it output sound in (first available) stereo instead of the configured 5.1 This is because otherwise chromium outputs Youtube (or any other) stereo streams to the left front and right front channels of the available 5.1, leaving the audio empty on the others, and then Realtek SpeakerFill does not activate, since it works only when the detected stream is stereo. This works correctly as long as FxSound is not used, and the music plays on all speakers. When using FxSound and giving it the Speakers (Realtek (R) Audio) device as output, the SpeakerFill no longer works. It seems that FxSound is upmixing the stereo track from the browser into 5.1 by simply playing the left and right of the stereo onto the left front and right front of the 5.1. Another possibility is that FxSound declares to the browser that stereo is not supported and gives it a 5.1 channel configuration, so the --try-supported-channel-layouts defaults to 5.1 and the SpeakerFill option cannot activate. Any suggestion if this is fixable? Some workaround? If not can it be fixed in the future? By the way a SpeakerFill option would be a great feature of FxSound by itself, so people don’t have to rely on drivers or other software. Right now, unfortunately I cannot use FxSound, because this is a deal breaker. --- _[View the full topic](https://forum.fxsound.com/t/bug-wrong-channel-configuration-disables-realtek-speakerfill-option/1773)._