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audio - sound output stuck on HDMI (working) - Raspberry ...
https://raspberrypi.stackexchange.com/questions/113997/sound-output-stuck-on-hdmi-working
You should try to comment out hdmi_force_edid_audio=1 in config.txt, add/uncomment hdmi_ignore_edid_audio=1 option, then reboot and try amixer again. Also you can check option hdmi_drive : hdmi_drive=1 Normal DVI mode (No sound) hdmi_drive=2 Normal HDMI mode (Sound will be sent if supported and enabled)
Raspberry Pi Documentation - The config.txt file
https://www.raspberrypi.com/documentation/computers/config_txt.html
hdmi_edid_file=1 hdmi_edid_filename:0=FileForPortZero.edid hdmi_edid_filename:1=FileForPortOne.edid hdmi_force_edid_audio Setting hdmi_force_edid_audio to 1 pretends that all audio formats are supported by the display, allowing passthrough of DTS/AC3 even when this is not reported as supported.
How to force audio from jack 3.5 modifying config.txt ...
https://forums.raspberrypi.com/viewtopic.php?t=215339
Code: Select all. hdmi_ignore_edid_audio=1. From the command line, https://www.raspberrypi.org/documentati ... -config.md : The following command, entered in the command line, will switch the audio output to HDMI: amixer cset numid=3 2.
RPiconfig - eLinux.org
https://elinux.org/RPiconfig
hdmi_edid_file=1 hdmi_force_edid_audio Pretends all audio formats are supported by display, allowing passthrough of DTS/AC3 even when not reported as supported. hdmi_force_edid_audio=1 hdmi_ignore_edid_audio Pretends all audio formats are unsupported by display. This means ALSA will default to analogue.
RPi Configuration - eLinux.org
https://elinux.org/RPi_Configuration
hdmi_ignore_edid=0xa5000080 hdmi_force_edid_audio Pretends all audio formats are supported by display, allowing passthrough of DTS/AC3 even when not reported as supported. hdmi_force_edid_audio=1 hdmi_ignore_cec Pretends CEC is not supported by TV. Avoids bringing (CEC enabled) TV out of standby and channel switch when rebooting.
Raspberry Pi Documentation - Configuration
https://www.raspberrypi.com/documentation/configuration/config-txt/video.md
The Raspberry Pi has up to three audio output modes: HDMI 1 and 2, if present, and a headphone jack. You can switch between these modes at any time. If your HDMI monitor or TV has built-in speakers, the audio can be played over the HDMI cable, but you can switch it to a set of headphones or other speakers plugged into the headphone jack.
7inch HDMI Display (H) - LCD wiki
http://www.lcdwiki.com/7inch_HDMI_Display_(H)
hdmi_force_edid_audio=1 max_usb_current=1 hdmi_force_hotplug=1 config_hdmi_boost=7 hdmi_group=2 hdmi_mode=87 hdmi_drive=2 display_rotate=0 hdmi_cvt 1024 600 60 6 0 0 0 Step 4. Insert SD card
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