When i press the home button on my Google TV streamer, my Onkyo receiver keeps turning on

[Weaselmon]

When i press the home button on my Google TV streamer, my Onkyo tx-nr646 turns on.  I thought it was my older Chromecast with Google TV failing, so I just purchased and installed a new Google TV streamer and having the same issue. I have all the instances of CEC turned off on my TV and the Google TV and receiver.  I have tried the streamer plugged into my TV with the sound going back to my TV via the HDMI return cable (didn't work), I also plugged the streamer directly into my Onkyo TX-NR646 (still turned it on).  As a side note I tried a Roku Ultra on the same TV and the problem is not happening.  I swapped all the HDMI cables (didn't work). I even reset my receiver back to factory defaults (didn't work)

This was not happening 2 weeks ago, and I did not make any changes to my system.  There are quite a few people I saw on Reddit that have the same issue, so I know I'm not the only one...

I don't want to return it, but I am losing my mind!

[vinaysati]

It sounds like this behavior may be related to recent firmware updates or changes in how the Google TV streamer handles HDMI-CEC signals, even when CEC settings appear to be disabled in menus.

Here are a few steps you can try:

1. Double-check HDMI-CEC settings on all devices

   • On Google TV: Settings  System  HDMI CEC  ensure all toggles are off.

   • On your Onkyo TX-NR646: Setup  Hardware → HDMI → HDMI Control (RIHD) set to Off.

   • On your TV: Turn off CEC (varies by brand: Bravia Sync, Anynet , Simplink, etc.).

2. Change the HDMI input sequence

   • Connect the Google TV directly to the TV, and use ARC/eARC for audio to the receiver.

   • Power on devices in a different order — some receivers interpret any HDMI signal change as a “power on” command.

3. Try disabling “Auto power on” and “Auto power off”

   • On Google TV: Settings → System → Power & Energy.

   • On Onkyo: Setup → Hardware → Power Management → disable any auto-on features.

4. Test with a CEC blocker adapter

   • These inexpensive HDMI adapters physically block CEC signals. If this resolves the issue, it confirms the cause is unintended CEC communication.

5. Report to Google TV support

   • Since you and others have noticed the change recently, this may be due to a software update. You can send feedback directly from your Google TV: Settings → Help & Feedback → Send Feedback.

If the Roku Ultra doesn’t trigger the same behavior, it suggests the issue is isolated to how Google TV is currently handling HDMI signal wake events.

[Weaselmon]

Thank you.  

I'm not sure how I could power devices on in a different order, as I just want to use the Google streamer and my LG TV, nothing else.  I turn on the TV and switch to the corrected HDMI input.

That being said, I ordered a CEC blocker off Amazon and it should be delivered tomorrow.  We'll see how that goes.  

[vinaysati]

Got it  sounds like you’re narrowing things down logically.

If the Google TV streamer and your LG TV are the only devices in the chain, then the CEC blocker is a good next troubleshooting step. Since HDMI-CEC can send “power on” commands even if you’ve disabled CEC in menus, a physical blocker will ensure no control signals travel over that HDMI connection.

When you test it:

• Power everything fully off and unplug for a minute before inserting the blocker.

• Then, plug the TV in first, wait for it to boot, and finally power up the Google TV streamer.

• Check if pressing Home on the remote still triggers the Onkyo (it shouldn’t if CEC is fully blocked).

If the issue persists even with a CEC blocker, that would point toward either an IR signal overlap from the remote or a firmware quirk in the streamer/TV combo rather than CEC itself.

thank you 

vinay sati