Template:FAQ:HDMI FAQs

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The Linn DSM products provide HDMI pass through of HDMI V1.4 and HDMI 2.0 (for Products with the HDMI2 board) signals

The Linn DSM products HDMI output will:-
1. Pass-through the HDMI audio when the Linn DSM is in Standby.
2. Pass-through the HDMI audio when the Linn DSM is listening to an Analogue or Digital Audio input.
3. BLOCK the HDMI audio to the TV if the the DSM is listening to an HDMI input.

ARC - Audio Return Channel

Only the Klimax DSM / Akurate DSM / Majik DSM with HDMI2 boards (>Sept 2016) and the Selekt DSM will support this connection.
ARC setting on your Television vary from manufacturer to manufacturer. So please double check your TV setup manual.

Common issues for the lack of ARC audio:
1. The standard Linn DSM can only playback stereo audio. If the TV is set to output Dolby Digital or other Surround format then the Linn DSM will not play this audio and stay silent. make sure the audio output is set to "STEREO"'
2. The TV audio setup may be conflicting with itself. If possible do an "AV RESET" or equivalent on your TV, then setup for Audio format - Stereo and CEC-enabled (CEC can go by different names AnyNet+, Veiralink, SimpLink, RIHD, Kuro Link..... etc. Check what your TV call it)
3. You are connect to the wrong socket on your TV. Make sure it states "ARC"

I cannot get any picture through the HDMI

General connections

The Linn DSM with HDMI2 board supports 4k resolution



  1. Select PS3 input on the Linn DSM

Check PS3 FAQ's

Virgin Media V6 / Sky-Q

The Virgin Media V6 & Sky-Q boxes are very strict on HDCP issues, as these work in HDCP 2.2. It has been found that if your TV or Projector only supports HDCP 1.3 and your AV Receiver (Linn DSM or other manufacturer) supports HDCP 2.2 then the mismatch will cause the Virgin Media V6/Sky-Q box NOT to send video (due to encryption issues).
The solution is to put an HDCP convertor, such as the LINDY or NEET Bidirectional HDCP Converter, V2.2 to V1.4, between the Virgin Media V6 or Sky-Q HDMI output and Linn DSM HDMI input. This will force all communications to HDCP 1.3
Some customers have found disabling "CEC" and "CEC Auto Select Source" on HDMI section of Konfig will fix this issue. (Do the Konfig changes and power cycle the Virgin Media/Sky box)

Apple MacMini, MacBook Pro etc

If you switch the DSM to the HDMI feed from a MacMini, MacBook, etc. it will initially lose any picture and audio. This may take up to 30 seconds to appear and for the audio to return. This delay is due to the Mac performing HDMI communication and re-establishing the audio and video options.

HDMI connection with Video scalers


No Audio playback on HDMI connection

The standard Linn DSM will ONLY support 2ch (or multichannel) PCM audio. It does not support Dolby Digital, DTS, etc. unless you have a Linn Surround Module installed in your Linn DSM.
If you feed an unsupported audio format from your DVD player, sat receiver, etc. the Linn DSM can pass this through to the TV if the DS is in standby mode. If when you select that input on the DSM there is no audio then double check that the audio out on the DVD/Sat is configured for 2ch PCM.

Audio keeps muting/unmuting

If your Linn DSM has an HDMI2 board then this may be the TV trying to control the Linn DSM volume.
Go into Konfig > your Linn DSM > HDMI. DISABLE the CEC settings and reboot the Linn DSM. This should stop this mute/unmute from occuring.

APPLE TV4 switching TV On and Off

When using an Apple TV4 with a Linn DSM with HDMI2 (>Sept 2016).

turn OFF "Control TV's and Receivers".

Otherwise the TV may be confused about its power state and Audio Return Channel (ARC - Audio from TV to Linn DSM).
You can use the Apple TV handset to control the Linn DSM volume by IR if this is required.

No Audio from a Linn DSM HDMI connection

The standard Linn DSM will ONLY support 2ch (or multichannel) PCM audio. It does not support Dolby Digital, DTS etc unless you have a Linn Surround Module installed in your Linn DSM.

  • On Davaar 55, the surround function has been added.
    • If the incoming audio from the HDMI source is multi-channel PCM, this audio is NOT broadcast using Songcast.
    • This will occur even if you only have a pair of speakers defined on the Linn DSM, it still has to downmix the incoming multi-channel audio.


Do Linn DSM products support HDMI 2.1?

Linn DSM products do not currently support the HDMI 2.1 specification.
HDMI 2.0 deals with 4K video with 18GHz bandwidth and is compatible with current Majik, Akurate and Klimax DSM products.
HDMI 2.1 deals with up to 10K video with 48GHz bandwidth. At the time of writing (March 2019) there are no cables, sources or playback devices commercially available supporting this specification.