Powernode 2i-HDMI randomly switches to HDMI input
Answered
Sometimes when listening to streamed services such as Tidal or music from my networked Library, the Powernode will randomly switch to its HDMI input.
I have a brand new Sony KD-48A9 with its HDMI-eARC output connected to the HDMI input of the Powernode.
The HDMI random switch problem occurs even though the TV is in standby. Disabling the Auto-sense seems to prevent the random switching happening......however, the random switching shouldn't happen in the first place, otherwise what is the point of having Auto-sense?
Any thoughts?
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1. Still Sony sending a signal it shouldn't do.
2. Your choice :-)
3. Bluesound is obviously following the HDMI standard, HEAC+ (Pin 14) and HEAC- (Pin19).HEAC- is the "Hot Plug Detect pin".
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Hi Bjorn,
I'm not sure if you work for Bluesound or are just an interested bystander, but I would expect Bluesound to take this up with Sony and come to some conclusion. It's not really acceptable to depend on customers to do product management work on behalf of Bluesound.
By the way, I used to be a Product Manager for Sony Broadcast Europe!
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To me, the relevant Bluesound bit is: "2 - Why is the Powernode with Auto Sense "ON" still switching to HDMI even though it is playing another digital source?"
This feature appears to not be working correctly, regardless of Sony's involvement.
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I caught that too Shawn and have asked our Quality Assurance team to investigate.
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I have the same problem with my Sony TV KD-XG9005.
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Hey Tony, any update on this please? The random switching to the HDMI input when I am playing music from USB is growing increasingly tiring.
It seems clear that this is a Bluesound issue and not a Sony issue - as identified above, the Powernode simply should not switch inputs when another source is already playing.
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You maybe correct but it is still a Sony issue. This to my knowledge, does not happen with any other brand of TV and I have seen it occur with SONOS products as well as Bluesound. Every time, a Sony TV was involved.
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Hello Pat C,
I totally agree with you! It needs lobbying from a manufacturer to get a company like Sony to address an issue such as this. There might be good reasons why Sony TV CEC interface behaves as it apparently does. I know from my time working with Sony that Sony is generally very thorough when it comes to both defining and implementing protocols.
Bluesound need to firstly recognise the issue and then explain to themselves why their product does not follow their own product description. Then if it is some form of interoperability issue, take it up with Sony, product management to product management. Otherwise, we are left with stalemate, with each side saying it's the other side's fault!
Fundamentally, as both you and I see it and irrespective of Sony, Bluesound's Powernode 2i product does not perform to its own product specification, as sold to its customers.
ACTION PLEASE BLUESOUND !!!
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It sounds like the HDMI signals received by the PowerNode aren't being validated prior to processing them. Sanitizing inputs should a requirement by now. Sure, Sony might be sending something funky down the wire to Bluesound that causes the PowerNode to interrupt its intended operation (switch audio inputs against the desired autosense settings) or mute everything instead of switch to power saving when the TV is powered off, but Bluesound is the one choosing to process that input.
If a vendor sends inappropriate data, the data recipient isn't a victim of the transmission; you have to validate the data as appropriate and filter the inappropriate data out. Ask all of the companies whose websites have suffered SQL injection attacks over the last 20 years about input sanitization. This is cybersecurity 101.
Whether Bluesound works with Sony is irrelevant - Bluesound is the one who designed something to respond to (presumably) non-standard inputs this specific way. This should be concerning as a principle that these IoT devices are using, perhaps though other interfaces (like web, Bluetooth, etc.).
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Hello,
is this issue ( POWERNODE 2I-HDMI RANDOMLY SWITCHES TO HDMI INPUT ) solved with the new Powernode (2021) ? I`m planning to invest in this new Powernode plus Sony TV ! thanks !
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I am experiencing the same issue with my TV a Sony XBR-49X800E and a BlueSound Node, I suspect this is an issue related to the TV and not the streamer because this issue only appears with Sony equipment and seems like Bravia have some non standard features for connectivity.
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Paulo, it seems both Bluesound and Sony have their respective heads buried in the sand on this one!
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I have a new Powernode and have this problem. It switching inputs while listening to Tidal, and I am using optical input for the TCL TV. Mid-listening it has switched to TV (not powered up but asleep) three times in these first few days I've had it.
I will turn off auto-sense. It seems to be the problem.
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As Ken says…
Smart TVs unfortunately do wake their electronics (not the screen), perform checks / updates but annoyingly when doing this on some the outputs become live (no audio) to trigger other connected devices to turn on.0 -
I am just experiencing this problem with my NAD M33 and my SONY AF9. I have had nearly 18 months flawless performance and this has just started. I have contacted SONY in New Zealand and not a lot of help.I have also sent the issue to NAD And did everything suggested. Came across this post after I sent the problem to SONY and NAD.
I have tried disabling the wifi and the problem persisted. The only thing that works is to go to optical and remove the HDMI cable. It would be great if this could be resolved.
Mike
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Hi Kerimike42,
I started this story over a year ago when I was having problems with my new Powernode 2i auto-switching to HDMI, plus some other issues, while connected my Sony KD-48A9. A firmware upgrade for the Powernode around last November 2021 seemed to finally resolve some issues with the interface. However, I have to admit I haven't listened much to music only on the Powernode in recent times, to verify if the TV HDMI switching issue has really gone away.....I use this Powernode mainly for Neflix TV surround-sound.
Suggest you tackle Bluesound about the HDMI interface firmware for the N33. I believe it is Bluesound's HDMI firmware where the problems lie, rather than with Sony TVs.
Good luck!
Dave.
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From your description, it seems that the HDMI connection carries more activities than the optical connection and that calls M33's attention unnecessarily when using the HDMI connection. Maybe a recent firmware update to the AF9 changed its behaviour?
Perhaps a firmware update to the M33 can make it ignore some of the signals to avoid this situation.
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My problem may have started around the time to upgrade to 3.16.5. Can blueos check for inadvertent consequences.
Mike
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Hi Mike, your issues are very likely caused by CEC commands being sent to your NAD M33 from the SONY TV and not BluOS Firmware related. Our good friends at support@nadelectronics.com will be happy to walk you through troubleshooting this - please drop them an e-mail.
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Hi Tony, isn't it high time Bluesound/NAD worked with Sony to find a mutually acceptible solution to this and other such problems? In any case, Bluesound BluOS firmware shouldn't be responding to CEC commands from Sony or anyone else for that matter, that are not directly relevant to BluOS! It's called filtering!
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Bluesound BluOS firmware shouldn't be responding to CEC commands from Sony or anyone else for that matter
That would actually defeat the whole purpose of CEC which is to get rid of the 6 remotes on your coffee table. Thanks for understanding...
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Clearly, I should have added the word "irrelevant" in front of "CEC commands" as well as "that are not directly relevant to BluOS" to aid your understanding!
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I hear your frustration Dave - unfortunately, CEC does not work that way - there is no differentiation between relevant and irrelevant commands - it's a defacto standard in that way. If the TV turns on - all devices connected will switch in anticipation the TV is on.
In my own personal home, I have to get off the couch and physically turn my TV off using the hard button because when my local cable provider's decoder box is 'off' it still sends ads out the HDMI port as to what is coming on pay per view or other services I can buy... thus the TV never ever turns off because the cable box is always sending video so CEC says 'stay on'.
Maybe if/when there is ever a CEC 2.0 this can be better anticipated...
I hope this helps.0 -
Copy of reply to NAD Support
Thank you for your reply.
I have had my NAD M33 for nearly 18 months and connected to my Sony AF9 using ARC without a problem. The HDMI cable is certified. I have turned off the CEC settings and the NAD no longer switches to HDMI with the TV off. BUT ! I now notice if either the HDMI or Optical cable is connected when playing music from my USB source the volume mutes from time to time. The only way to stop this mute is to have neither the HDMI or Optical cables connected.I did not have these problems before blueos 3.16.5, I waited a week or so before installing and checked to see if there were any issues on the blueos forum. Seeing none I installed the upgrade. It seems I have had these problems since the upgrade.Can you please send me a download and instructions to revert to 3.16.2. This will either prove or disprove my theory.0 -
J'ai remplacé mon NAD M10 par un M10 V2. J'ai toujours eu des problèmes avec le HDMI ARC ; parfois lors de l'allumage de mon Sony 65XG9505, le M10 (V1 et V2) ne s'allume pas. En regardant les journaux, Sony continue d'envoyer des demandes au NAD. J'ai changé le câble HDMI 3 fois, toujours le même problème. Le M10 V2 s'allume en même temps que la TV 9 fois sur 10.
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I agree something more went wrong. Frequently when changing from an app to TV channel on the Sony TV I now lose sound. To get sound back I need to reboot the NAD M33
I Have now switched to optical which gets round the problems but is not ideal.
MIKE0 -
It's past time that a full technical analysis and review was done on this. It's time to stop blaming eArc standards when the issues start after an update. Something is clearly broken.
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After becoming quite frustrated with the situation with hdmi and the problems I also experienced with optical I decided to give bluetooth a go. Got the Sony connected to the NAD removed all leads from tv and NAD. I am happy to report I have had no further issues. Lip sync seems ok for me, certainly no worse than previously. So bluetooth is worth a try. Also I can use the tv remote to control volume when I set the NAD at a sufficient high level.
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Having not addressed the issue for a year or more, I experimented with the HDMI settings again yesterday.
With HDMI AutoSense on, my Sony TV would interrupt my music source, for example streaming from Tidal, after maybe a couple of minutes.....no good.
I turned HDMI AutoSense off and the Sony interruptions stopped. I then set the IR Learning so that when I power-on the Sony TV, the HDMI audio source is selected.
This setup combination currently seems to work.....for the moment at least!
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Kerimike42, my issue was exactly the same as yours: With HDMI auto sense on, my Powernode would sporadically change input to my Sony TV while music was playing. With auto sense off, the Powernode would mute my music source with the same frequency and randomness. Extremely frustrating to the say the least.
Happily, changing the Sony settings as you suggest seems to have fixed the issue. Two weeks in and no more muting or changing inputs.
Thank you very much for doing the digging that BlueSound couldn't or wouldn't do. I can actually enjoy my device properly now. I suspect there are many people out there who have BluOS devices using HDMI ARC with Sony TVs experiencing this issue. I hope they find this thread and your solution.
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