CEC stopped working on Pi4 11.0.3 version

PiMONSTER · September 20, 2023 at 7:09 PM

All I did was turn it off so I could clear the dust off the fan and on powering up no CEC. Using the search for device on my Samsung tv finds no devices.

I found a little command to test the CEC:

Code

cec-ctl --list-devices
vc4_hdmi (vc4-hdmi-0):
    /dev/cec0

vc4_hdmi (vc4-hdmi-1):
    /dev/cec1

Driver Info:
    Driver Name                : vc4_hdmi
    Adapter Name               : vc4-hdmi-0
    Capabilities               : 0x0000010e
        Logical Addresses
        Transmit
        Passthrough
        Connector Info
    Driver version             : 6.1.38
    Available Logical Addresses: 1
    DRM Connector Info         : card 0, connector 32
    Physical Address           : f.f.f.f
    Logical Address Mask       : 0x0000
    CEC Version                : 1.4
    Vendor ID                  : 0x001582 (Pulse-Eight)
    OSD Name                   : ''
    Logical Addresses          : 1 (Allow Fallback to Unregistered)

      Logical Address          : Not Allocated
        Primary Device Type    : Record
        Logical Address Type   : Record
        All Device Types       : Record
        RC TV Profile          : None
        Device Features        :
        None

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A Physical Address of f.f.f.f and Logical Address Mask of 0x0000 seems wrong ?

Plugging my old Pi2 in and it's CEC still works.

I have a backup of 11.0.1 so can I just overwrite and hope that sorts it or do I need to rebuild 11.0.1, apply the backup to it and then update back to 11.0.3 ?

UPDATE:

No mention of CEC in dmesg output.

The Pi4 is not recognising the samsung remote as a CEC device but I can use the Yatse phone app to fully access it via wireless.

i'm NOT liking using a phone to control kodi and as stated the samsung remote works fine with a Pi2.

**chewitt** · September 21, 2023 at 6:57 AM Best Answer

Turn all devices off and physically disconnect HDMI cables. Go make a coffee and leave it alone for 15 mins. Reconnect cables and power things on; the TV first, then the RPi4. Any change?

PiMONSTER · September 21, 2023 at 2:36 PM

Thanks chewitt, I did something like that.

I think I read somewhere it only has CEC through one port. So I've changed to the top one next to USB-C power and powered off. Gave it a wee bit of time powered back up, boot screen appeared (didn't previously) and once I reached desktop CEC fully functional again

So it seems to initialise the port, plug in, power off and restart.

waclaw66 · December 29, 2023 at 9:04 PM

``Same problem, issue started after ugprade to 11.0.3 on RPi4 connected to SamsungTV. That 15min unplug didn't help.

CEC seems to be detected...

Code

2023-12-29 21:55:14.655 T:1153     info <general>: Register - new cec device registered on cec->Linux: CEC Adapter (0000:0000)

althought cec-client fails...

Code

root@LibreELEC:~$ cec-ctl --list-devices
vc4_hdmi (vc4-hdmi-0):
       /dev/cec0
vc4_hdmi (vc4-hdmi-1):
       /dev/cec1
Driver Info:
       Driver Name                : vc4_hdmi
       Adapter Name               : vc4-hdmi-0
       Capabilities               : 0x0000010e
               Logical Addresses
               Transmit
               Passthrough
               Connector Info
       Driver version             : 6.1.68
       Available Logical Addresses: 1
       DRM Connector Info         : card 0, connector 32
       Physical Address           : 1.0.0.0
       Logical Address Mask       : 0x0010
       CEC Version                : 1.4
       Vendor ID                  : 0x001582 (Pulse-Eight)
       OSD Name                   : ''
       Logical Addresses          : 1 (Allow Fallback to Unregistered)
         Logical Address          : 4 (Playback Device 1)
           Primary Device Type    : Playback
           Logical Address Type   : Playback
           All Device Types       : Playback
           RC TV Profile          : None
           Device Features        :
               None
root@LibreELEC:~$ cec-client /dev/cec0
No device type given. Using 'recording device'
CEC Parser created - libCEC version 4.0.7
opening a connection to the CEC adapter...
DEBUG:   [               1]     Broadcast (F): osd name set to 'Broadcast'
ERROR:   [            3505]     error opening serial port '/dev/cec0': Couldn't lock the serial port
ERROR:   [            3505]     could not open a connection (try 1)
ERROR:   [            6340]     error opening serial port '/dev/cec0': Couldn't lock the serial port
ERROR:   [            6340]     could not open a connection (try 2)
ERROR:   [            8230]     error opening serial port '/dev/cec0': Couldn't lock the serial port
ERROR:   [            8230]     could not open a connection (try 3)
ERROR:   [            9490]     error opening serial port '/dev/cec0': Couldn't lock the serial port
ERROR:   [            9490]     could not open a connection (try 4)
unable to open the device on port /dev/cec0
NOTICE:  [           10495]     connection opened
ERROR:   [           10495]     could not start CEC communications
root@LibreELEC:~$ cec-client /dev/cec1
No device type given. Using 'recording device'
CEC Parser created - libCEC version 4.0.7
opening a connection to the CEC adapter...
DEBUG:   [               0]     Broadcast (F): osd name set to 'Broadcast'
ERROR:   [            3503]     error opening serial port '/dev/cec1': Couldn't lock the serial port
ERROR:   [            3503]     could not open a connection (try 1)
ERROR:   [            6338]     error opening serial port '/dev/cec1': Couldn't lock the serial port
ERROR:   [            6338]     could not open a connection (try 2)
ERROR:   [            8228]     error opening serial port '/dev/cec1': Couldn't lock the serial port
ERROR:   [            8228]     could not open a connection (try 3)
ERROR:   [            9488]     error opening serial port '/dev/cec1': Couldn't lock the serial port
ERROR:   [            9488]     could not open a connection (try 4)
unable to open the device on port /dev/cec1
NOTICE:  [           10493]     connection opened
ERROR:   [           10493]     could not start CEC communications

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**Da Flex** · December 29, 2023 at 9:59 PM

waclaw66 Upgrade to 11.0.4. Switch CEC off / on on your TV. Try another HDMI cable, if available.

If it still fails after this...

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

waclaw66 · December 29, 2023 at 10:17 PM

Already on 11.0.4, still persists...

https://paste.libreelec.tv/engaged-chigger.log

**Da Flex** · December 30, 2023 at 1:02 AM

waclaw66 You are using banned add-ons. That means no support. I suggest to install LE from scratch.

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newphreak

March 15, 2016 at 1:02 AM

CEC stopped working on Pi4 11.0.3 version

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