switch on TV (CEC) when librelec is turned on

niek · January 20, 2024 at 8:31 AM

im running liberelec lates version on a HTPC(Generic PC) with kodi v20.3
And im still having sometimes issues with the sound

Sometimes the sonos surround set is not started( only TV sound) or the sound is stuttering. By rebooting liberelec it is working ok.
This problems i had often with the kodi v18. When i first switch on a other device (which triggers the HDMI, swich on TV and sonos ) it is running alway ok

So i wondering if it is possible that my HTPC (which is connected to the TV by HDMI) could also switch automaticaaly the TV and SONOS on )

is check forums and see something like a command

CECActivateSource

Any help will be very nice

**Da Flex** · January 20, 2024 at 5:09 PM

Please provide a full debug log.

How to post a log (wiki)

1. Enable debugging in Settings>System Settings>Logging
2. Restart Kodi
3. Replicate the problem
4. Generate a log URL (do not post/upload logs to the forum)

use "Settings > LibreELEC > System > Paste system logs" or run "pastekodi" over SSH, then post the URL link

niek · January 20, 2024 at 9:49 PM

I think a log will not help, because at my previous version kodi18 i had the same issue but more often

I also did an upload of log and there was nothing wrong in the log, according to a kodi of llibreelec expert.

But i can make a log when it happens.

But is there a way that my htpc can send a signal to my tv through hdmi, to turn on tv?

**Da Flex** · January 20, 2024 at 10:16 PM

Quote from niek

But is there a way that my htpc can send a signal to my tv through hdmi, to turn on tv?

Yep, click at Settings --> System --> Input --> Peripherals --> CEC Adapter, and you'll see all the options.

josh4trunks · January 21, 2024 at 12:26 AM

Do you have a CEC capable LE system? Like Raspberry Pi or USB CEC adapter?

Another thing I just did to fix wake issues on my system was "getedid create". This stores EDID info, so your LE system knows what it's connected to even if they are still waking up.
https://wiki.libreelec.tv/configuration/edid

BTW, thanks to the LE developers for the "getdid" command. I remember years ago doing this manually, and now it's so much simpler!

**Da Flex** · January 21, 2024 at 5:45 AM

Quote from josh4trunks

Do you have a CEC capable LE system? Like Raspberry Pi or USB CEC adapter?

Yes, RPi. When you activate another source on TV, then the TV usually switches to that source. The same happens by source reboot. Otherwise CEC adapter is needed to initialize the system.

I think the latter is the case here: HTPC is already on, and has to say "hello" to TV when it's turned on. It does so by being an A/V source to the TV, but not by sending a "hello" CEC signal. So the AVR probably doesn't get a CEC initialization signal, and audio routing is incorrect.

Quote from niek

So i wondering if it is possible that my HTPC (which is connected to the TV by HDMI) could also switch automaticaaly the TV and SONOS on )

If you don't have a CEC adapter in your menu (see post #4), then the answer is no.

niek · January 21, 2024 at 10:01 AM

at Settings --> System --> Input --> Peripherals

This one is empty

At tab SOUND, i selected

ALSA: HDA Intel pch Mei Panasonic TV on display port #0

If my HTPC is CEC competable?

I do not know, where can i find that?

It is a small motherboard ASROCK J4205-itx

And i do not have a CEC splitter after my htpc

frakkin64 · January 21, 2024 at 10:41 AM

CEC on x86 is pretty rare from what I have read.

First bullet in this Wiki article is where I read the statement above:
https://kodi.wiki/view/CEC#CEC-capable_HTPCs

**Da Flex** · January 21, 2024 at 10:52 AM

Quote from niek

If my HTPC is CEC competable?

Obviously not.

Your do HTPC--HDMI-->TV--HDMI-->AVR. That's a problem, because AVR doesn't get the CEC initialization sometimes.

Can you go HTPC--HDMI-->TV and HTPC--S/PDIF-->AVR? Then you don't need CEC initialization.

niek · January 21, 2024 at 11:46 AM

Using SPDIF, no my Sonos does not support

SPDIF. So i have to install a CEC splitter then?

But i thought when first switch on TV. The TV will trigger the Sonos (AVR).But this is sometime not the case. Every device else like Google tv , ziggo box and ps5, will trigger the AVR. So now I always switch on ziggo box first before HTPC

**Da Flex** · January 21, 2024 at 12:08 PM

It could be something else, too. Provide the log when the error appears again.

PS: Activate log level 1 by creating an advancedsettings.xml file, and reboot. When the error appears, login by SSH, and post the result of pastekodi.

MatteN · January 21, 2024 at 12:42 PM

Quote from niek

If my HTPC is CEC competable?
I do not know, where can i find that?
It is a small motherboard ASROCK J4205-itx
And i do not have a CEC splitter after my htpc

No, your motherboard doesnt have CEC.

**Da Flex** · January 21, 2024 at 1:00 PM

Not sure whether it's CEC-related at all.

niek · January 21, 2024 at 1:55 PM

Ok i will make a log, when it happonds

niek · January 22, 2024 at 5:07 PM

I checked the molthboard j4205 manuals, but i could not find anything about CEC at HDMI. So this port is not CEC compliant

Setup the log ad kodi , now waiting for the audio issue

niek · January 22, 2024 at 7:56 PM

https://paste.libreelec.tv/mint-piglet.log

Issue was at this log , that the ARV(SONOS) was not started

**Da Flex** · January 22, 2024 at 9:37 PM

Quote from Da Flex

Activate log level 1 by creating an advancedsettings.xml file, and reboot.

Code

2024-01-22 20:51:40.366 T:985      info <general>: Disabled debug logging due to GUI setting. Level 0.

frakkin64 · January 22, 2024 at 10:02 PM

Why are you running Kodi in 4K, that's probably going to be an issue to upscale content to 4K.

Code

2024-01-22 20:51:42.254 T:985      info <general>: GUI format 3840x2160, Display 3840x2160 @ 30.000000 Hz

I would suggest starting with the 4K/HDR configuration guide:

https://wiki.libreelec.tv/configuration/4k-hdr

switch on TV (CEC) when librelec is turned on

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