TV automatically turns ON after shutting it OFF

KingJulien · February 14, 2018 at 2:17 PM

I have LG TV with a soundbar connected to HDMI ARC Input, and a Raspberry+Libreelec connected to the soundbar.

What happens is that if i power off the TV when is selected the Kodi input, it automatically turns ON after about 5-10 seconds.

The only way i've found to power off the TV is to change the input to antenna (aerial TV) and then power off the TV. But it does not work always and from time to time the TV cames up again after a random time (minutes to hours).

This behaviour does not happen when Kodi is directly connected to TV using another HDMI input instead through the soundbar. But there are some other pitfalls in this configuration, so i prefer to have the RPi connected to the soundbar.

I enabled debugging and do: play video -> stop -> shutdown TV -> wait for TV to power ON -> play same video again -> stop -> shutdown TV -> wait for TV to power ON.

The power off times in the log are 18:03:11.084 and 18:03:50.791.

The log is here:

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Any help would be appreciated. Thank you very much!

**blueribb** · February 14, 2018 at 3:01 PM

When you power off the TV, is the soundbar and rpi still ON ?

**blueribb** · February 14, 2018 at 3:15 PM

Is CEC enabled on your LG TV ? (called SimpLink)

How to Enable HDMI-CEC on Your TV, and Why You Should

KingJulien · February 14, 2018 at 4:13 PM

RPi is always ON. The soundbar powers on and off with the TV (through CEC also).

Yes, CEC is enabled on the TV. I use the TV remote to control Kodi and soundbar.

I also disabled all the CEC options in Kodi (except for "enabled").

**blueribb** · February 14, 2018 at 8:49 PM

After shutting your TV off, disconnect the hdmi cable from the soundbar to the TV. If the TV doesn't turn back on, then start over and disconnect the hdmi cable from the rpi to the soundbar. That will tell you if the rpi or soundbar is at fault.

KingJulien · February 15, 2018 at 12:08 PM

The issue only happens when RPi is connected to soundbar and soundbar to TV.

When RPi is connected directly to TV on different HDMI than soundbar, the TV does not power on.

**blueribb** · February 15, 2018 at 1:36 PM

I would say the TV or Soundbar has a CEC issue - may just be a simple setting. If you plug the rpi directly into the TV (same hdmi - not a different one) and the TV doesn't turn back on, then the rpi is not the fault.

Did you say you disabled CEC on the rpi ?

KingJulien · February 16, 2018 at 7:45 AM

More on this.

I enabled CEC logs to see what is happening.

The restarting is around 22:41:44.

The only thing i see is that Recorder 1 (Kodi i guess) is marked as active source just before the TV is turned on:

Code

22:41:38.594 T:1799525280   DEBUG: CecLogMessage - TV (0): power status changed from 'on' to 'standby'
22:41:38.594 T:1799525280   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): standby (36)
22:41:38.665 T:1799525280   DEBUG: CecLogMessage - >> 0f:36
22:41:38.665 T:1799525280   DEBUG: CecLogMessage - resetting SL initialised state
22:41:44.657 T:1799525280   DEBUG: CecLogMessage - GetPhysicalAddress - physical address = 1000
22:41:44.657 T:1799525280   DEBUG: CecLogMessage - setting physical address to '1000'
22:41:44.657 T:1799525280   DEBUG: CecLogMessage - marking Recorder 1 (1) as inactive source
22:41:44.657 T:1799525280   DEBUG: CecLogMessage - >> source deactivated: Recorder 1 (1)
22:41:44.685 T:1799525280   DEBUG: CecLogMessage - Recorder 1 (1): physical address changed from 1100 to 1000
22:41:44.685 T:1799525280   DEBUG: CecLogMessage - << Recorder 1 (1) -> broadcast (F): physical address 1000
22:41:44.685 T:1799525280   DEBUG: CecLogMessage - << 1f:84:10:00:01
22:41:44.807 T:1799525280   DEBUG: CecLogMessage - Recorder 1 (1): power status changed from 'in transition from standby to on' to 'on'
22:41:44.807 T:1799525280   DEBUG: CecLogMessage - making Recorder 1 (1) the active source
22:41:44.807 T:1799525280   DEBUG: CecLogMessage - TV (0): power status changed from 'standby' to 'in transition from standby to on'

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Thank you!

Full log is here:

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