2018-10-13, 15:19
Just came by to report that the audio engine in the firmware is still broken, crackling and pops, with the actual Raspbian release, when using audio_pwm_mode=2
Latest Raspbian:
Version: October 2018
Release date: 2018-10-09
Kernel version: 4.14
https://downloads.raspberrypi.org/raspbi..._notes.txt
* Linux kernel 4.14.71
* Raspberry Pi firmware 5b49caa17e91d0e64024380119ad739bb201c674
- the bcmstat script is again reporting a different firmware:
Firmware: Sep 21 2018 15:43:17, version 07f57128b8491ffdefcdfd13f7b4961b3006d9a9 (clean) (release)
- the sound is ok with audio_pwm_mode=1, but the constant hiss (static noise) makes it useless
Keeping this sound algorithm broken for several releases in a row, without reverting it to the previously functional state, is something that exceeds my rational understanding.
I believe it's time to keep this useful patch:
https://github.com/raspberrypi/linux/issues/2587
and revert the code to the state from the "good old" kernel 4.4.50 and the firmware 3ca4cf4a663c5351eaec08b29d50d6e8324981b4, with which I got stuck since more than a year now.
Propose jdb to move back to the drawing board with his attempts to improve the sound:
https://www.raspberrypi.org/forums/viewt...8&start=50
Latest Raspbian:
Version: October 2018
Release date: 2018-10-09
Kernel version: 4.14
https://downloads.raspberrypi.org/raspbi..._notes.txt
* Linux kernel 4.14.71
* Raspberry Pi firmware 5b49caa17e91d0e64024380119ad739bb201c674
- the bcmstat script is again reporting a different firmware:
Firmware: Sep 21 2018 15:43:17, version 07f57128b8491ffdefcdfd13f7b4961b3006d9a9 (clean) (release)
- the sound is ok with audio_pwm_mode=1, but the constant hiss (static noise) makes it useless
Keeping this sound algorithm broken for several releases in a row, without reverting it to the previously functional state, is something that exceeds my rational understanding.
I believe it's time to keep this useful patch:
https://github.com/raspberrypi/linux/issues/2587
and revert the code to the state from the "good old" kernel 4.4.50 and the firmware 3ca4cf4a663c5351eaec08b29d50d6e8324981b4, with which I got stuck since more than a year now.
Propose jdb to move back to the drawing board with his attempts to improve the sound:
https://www.raspberrypi.org/forums/viewt...8&start=50