Audio frequency rate error when playing music (slow effect).

raspberrypi / firmware

This repository contains pre-compiled binaries of the current Raspberry Pi kernel and modules, userspace libraries, and bootloader/GPU firmware.

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Audio frequency rate error when playing music (slow effect). #1146

Open nagualcode opened 5 years ago

nagualcode commented 5 years ago

I just noticed that with the most recent firmware (archlinux-arm), music played with mpd was slowed down, i guess some frequency rate error. Editing config.txt to: audio_pwm_mode=0 or audio_pwm_mode=1 Solved the issue.

popcornmix commented 5 years ago

It was okay with previous firmware? What version was previous firmware?

nagualcode commented 5 years ago

Last version I was running before update (when pwm_mode 0, 1 and 2 where ok): Linux moods 4.14.62-1-ARCH #1 SMP Fri Aug 17 05:43:55 UTC 2018 armv7l GNU/Linux Aug 16 2018 17:30:30 Copyright (c) 2012 Broadcom version 31e0613622dc2f2463bf3dd74e6c897d91201a4d (clean) (release)

Version I am running now, where pwm_mode 2 sounds slower (with mpd):

Linux moods 4.19.42-1-ARCH #1 SMP PREEMPT Wed May 15 00:39:47 UTC 2019 armv7l GNU/Linux Mar 27 2019 15:45:53 Copyright (c) 2012 Broadcom version 2e98b31d18547962e564bdf88e57b3df7085c29b (clean) (release) (start)

popcornmix commented 5 years ago

Can you identify the exact update which caused this. See: https://github.com/Hexxeh/rpi-firmware/commits/master

If you click on each commit the end of the url contains a git hash. Run sudo rpi-update <hash> to revert back to that version. Report the first version with this error.