CEC support for Kodi 19.5 under SW-arm 15.0 fails

Johpin · 03-25-2023, 03:21 AM

With CEC you can control for example Kodi with your remote control from your tv.

The binary I compiled according Kodi's README.Linux.md, see ng-its-readme-linux-md-for-rpi4-gives-eror-unable-to-create-gui-exiting-use-x11-4175723287/ , and Minime_2003's binary, see https://www.linuxquestions.org/quest...-a-4175721421/, both don't support CEC, despite of it has been compiled in.

Under Raspberry Pi OS Bullseye CEC is supported.

I can switch off and on my television via CEC using cec-ctl and /dev/cecX exists, so this should not be the problem.

Any ideas how to solve it?

drmozes · 03-25-2023, 05:06 AM

Quote:

Originally Posted by Johpin

With CEC you can control for example Kodi with your remote control from your tv.

The binary I compiled according Kodi's README.Linux.md, see ng-its-readme-linux-md-for-rpi4-gives-eror-unable-to-create-gui-exiting-use-x11-4175723287/ , and Minime_2003's binary, see https://www.linuxquestions.org/quest...-a-4175721421/, both don't support CEC, despite of it has been compiled in.

Under Raspberry Pi OS Bullseye CEC is supported.

I can switch off and on my television via CEC using cec-ctl and /dev/cecX exists, so this should not be the problem.

Any ideas how to solve it?

The Slackware ARM 15.0 Kernel doesn't currently have a the full complement of CEC drivers, and Slackware AArch64 had none.
I've added these into the Kernel and they'll be out in the next batch of updates for both platforms -- thanks for the report!

Code:

[*] HDMI CEC RC integration
[*] HDMI CEC drivers

 <M> Remote Controller support

However, I glanced at the other threads you linked to and it appears you're running Slackware ARM 15.0 on a RPi?
The RPi isn't supported by Slackware ARM (32bit) directly, so you must be using Kernel from elsewhere and you'd need to get whomever provides that to change it. I've added the extra CEC and RC support to the Slackware ARM 15.0 Kernel should it be useful for the supported Hardware Models.

If you have a Raspberry Pi4 you could switch to Slackware AArch64 (64bit). I don't know if it'd be any better, but at least the Kernel would have CEC support ;-)

Johpin · 03-26-2023, 10:16 AM

Quote:

Originally Posted by drmozes

The RPi isn't supported by Slackware ARM (32bit) directly, so you must be using Kernel from elsewhere and you'd need to get whomever provides that to change it.

I installed Slackware-arm by using Sarpi's installer. This provided a 6.1 kernel, which crashed during building LibreOffice. I reverted back to 5.15 by following the manual at https://www.raspberrypi.com/document...ux_kernel.html using their configuration.

pan64 · 03-26-2023, 10:44 AM

is this the same issue? https://www.linuxquestions.org/quest...ls-4175723276/

Johpin · 03-26-2023, 11:34 AM

Quote:

Originally Posted by pan64

is this the same issue? https://www.linuxquestions.org/quest...ls-4175723276/

It is a different problem: at that time /dev/cecX didn't exist -> this has been solved.

bittin_ · 03-27-2023, 10:24 AM

seems to be solved now was discussed in todays Slackware ARM youtube video

Johpin · 03-29-2023, 06:33 AM

Quote:

Originally Posted by bittin_

seems to be solved now was discussed in todays Slackware ARM youtube video

Discussion started at 28 minutes and 30 seconds, see https://youtu.be/sxvLMIPy_Vw?t=1715. CEC support has been added to the 64 bit kernel, which is the first step. As I understood the 32 bit kernel has CEC support.

However I am using the kernel from Raspberry Pi, which has already CEC support. I can switch off and on my televison using cec-ctl, but controlling Kodi fails. My problem has not been solved yet.

Remark: building Kodi-gbm Matrix 19.5 on RPi OS Bullseye results in a binary with CEC support.