- Joined
- Jun 3, 2020
- Messages
- 2
Hi. I experience constant crackling audio and dropouts and can’t find a solution.
Here’s what I found out until now:
– It occurs only in macOS not in Windows.
– It occurs both in Catalina and Mojave (two separate installs).
– It doesn’t matter whether I use AppleALC.kext or VoodooHDA.kext
– It doesn’t matter which layout-id I use.
– It doesn’t matter which audio resolution or bit depth I select in Audio-MIDI-Setup.app.
– It doesn’t matter whether I use the internal audio device (SupremeFX S1220A) or an USB audio device. USB is probably even worse.
– Disabling the internal audio device in BIOS and only using USB doesn’t fix it either.
– AirPlay is not affected regardless whether system wide AirPlay or app specific AirPlay is used.
Does anyone have an idea what else I can try or what could be the cause of the issue?
Currently I suspect it could have something to do with HPET.
I tried to create a SSTD-HPET.aml but unfortunately https://dortania.github.io/Getting-Started-With-ACPI/Universal/irq.html doesn’t contain detailed information and SSDTTime doesn’t work on my DSDT (known issue: https://github.com/corpnewt/SSDTTime/issues/7). It appears that HPET is at the root level of my DSDT and not under _SB.PCI0.LPC or something similar.
I don’t have much knowledge about how this ACPI stuff works.
As far as I know I run the newest version of OC and all the kexts/drivers. If you need more information about my system please let me know.
Here’s what I found out until now:
– It occurs only in macOS not in Windows.
– It occurs both in Catalina and Mojave (two separate installs).
– It doesn’t matter whether I use AppleALC.kext or VoodooHDA.kext
– It doesn’t matter which layout-id I use.
– It doesn’t matter which audio resolution or bit depth I select in Audio-MIDI-Setup.app.
– It doesn’t matter whether I use the internal audio device (SupremeFX S1220A) or an USB audio device. USB is probably even worse.
– Disabling the internal audio device in BIOS and only using USB doesn’t fix it either.
– AirPlay is not affected regardless whether system wide AirPlay or app specific AirPlay is used.
Does anyone have an idea what else I can try or what could be the cause of the issue?
Currently I suspect it could have something to do with HPET.
I tried to create a SSTD-HPET.aml but unfortunately https://dortania.github.io/Getting-Started-With-ACPI/Universal/irq.html doesn’t contain detailed information and SSDTTime doesn’t work on my DSDT (known issue: https://github.com/corpnewt/SSDTTime/issues/7). It appears that HPET is at the root level of my DSDT and not under _SB.PCI0.LPC or something similar.
I don’t have much knowledge about how this ACPI stuff works.
As far as I know I run the newest version of OC and all the kexts/drivers. If you need more information about my system please let me know.