Reply To: OSSC v1.xx series beta firmware

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November 12, 2025 at 7:13 PM #67698
Frucoboti
Participant

    Hi everyone,

    I’ve been testing my Commodore 64 (PAL) connected through my OSSC, using the Lumacode mod output into AV2, and I’ve noticed something strange.

    When I set the OSSC to Line5x (240p/288p) mode, I get a pixel-perfect and beautifully stable image, but there’s no audio output on my TV (a Samsung QN95B).

    If I switch back to Line2x, audio works perfectly — same cables, same inputs, same setup — so the issue only appears in 5x mode.

    I’m running the latest stable firmware, and I’ve also tried rolling back to a previous version, but the result is exactly the same — great picture, no sound.

    Not sure if this could be related to how the TV handles HDMI audio when Line5x mode is active, or maybe something specific to the QN95B.

    Any ideas or suggestions on how to troubleshoot this would be greatly appreciated.

    Thanks!