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Audio-Injector / Octo

Octo sound card - 8 channel output and 6 channel input sound cards
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Noise in all inputs with kernel 6 #64

Open marclava opened 1 year ago

marclava commented 1 year ago

Inputs are working with Linux kernel 5, but not with Linux kernel 6; there's only noise at maximum level in all 6 inputs. Outputs are working. I tried with recent versions of Raspian and Ubuntu.

This is a important issue because newer versions of RPI OSes will soon use Linux 6+, including those dedicated to audio.

KarelDrummer commented 12 months ago

To be honest, even outputs don't work with Kernel (+modules) 6.x. I manually migrated to 5.15 and it works.

It's a quite bit disadvantage of Octo - very bad software support + maintanance :(

KarelDrummer commented 12 months ago

Event it doesn't work with Kernel 5.10 for me. I was lucky, I'm able manually load saved kernel 5.15 with modules, and manuall deploy really works. If you will be interested for this Kernel files, let me know at:

karel.drummer@hotmail.com

sangibeaud commented 11 months ago

The issue might be because linux kernel now a proper driver for cs42xx8, and can handle up to 8 channels "natively", while audio injector octo had a FPGA on the board re-clock signals to accommodate old drivers.

Works fine for me with :

       sudo rpi-update fab7796df0cf29f9563b507a59ce5b17d93e0390

which downgrades to kernel 5.10.y

Other kernel tags should work, if before 5.15 ish. Sorry I don't know of a workaround to alter the driver and make it work in 6.x