On Sun, Nov 5, 2017 at 12:26 AM, Alek Mabry <[email protected]> wrote:
> Everything seems to work up until:
>
> debian@beaglebone:/var/lib/cloud9/2ecf864e1b3f250bad82c0eae12b7b64$ sudo
> config-pin p9.30 pruout
>
> P9_30 pinmux file not found!
>
> bash: /sys/devices/platform/ocp/ocp*P9_30_pinmux/state: No such file or
> directory
>
> Cannot write pinmux file: /sys/devices/platform/ocp/ocp*P9_30_pinmux/state

P9_30 = hdmi audio

https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays

So you add:

disable_uboot_overlay_audio=1

to /boot/uEnv.txt

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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