ARC Dolby Digital missing after update

[ukhukh]

After the latest firmware update my KD-65X8505C no longer passes Dolby Digital to my AVR over HDMI ARC. I do get sound, but not Dolby Digital as I used to.

Version PKG 3.885.0137EUB, AVR is a harman/kardon AVR 1710.

Suggestions appreciated.

[Risc0n]

Go to sound settings and change digital audio out to Auto 1.

[ukhukh]

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@Risc0n wrote:

Go to sound settings and change digital audio out to Auto 1.

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Yes, I already tried that. The AVR now detects sound as "Dolby Pro Logic IIx", but still not Dolby Digital as it used to with Dolby Digital content.

Thanks for the suggestion anyway.