MP 1,1-5,1 Mac Pro 3,1 No audio devices Monterey (OCLP)

[840quadra]

Greetings,

Working on upgrades to a 3,1 8 core that was gifted to me last year and have run into a bizarre problem. After upgrading to Monterey this device appears to have no audio output outside of HDMI. I saw macOS 12 Monterey on Unsupported Macs Thread, however attempts at using older copies of AppleALC have not provided a solution for me.

While I could potentially get a USB audio device to solve my current problem, I am wondering if any of the MR cMP gurus may have a solution for this issue?

 

[Tex Tiles]

Greetings,

Working on upgrades to a 3,1 8 core that was gifted to me last year and have run into a bizarre problem. After upgrading to Monterey this device appears to have no audio output outside of HDMI. I saw macOS 12 Monterey on Unsupported Macs Thread, however attempts at using older copies of AppleALC have not provided a solution for me.

While I could potentially get a USB audio device to solve my current problem, I am wondering if any of the MR cMP gurus may have a solution for this issue?

I today tried to install Monterey on my MP 3,1. It did do the install on a partition on the hd from my flash drive installer but won't boot into Monterey. You managed to get it to boot and run from the Monterey drive??

Perhaps you could share the trick as I am stuck. I see lots of people successfully installing it on MP 5,1 but not 3,1...

I did manage to run Catalina on it (a bit buggy) was hoping Monterey would be better and more stable for protools and music studio applications.

 

[OS6-OSX]

Flawless!

 

[840quadra]

I today tried to install Monterey on my MP 3,1. It did do the install on a partition on the hd from my flash drive installer but won't boot into Monterey. You managed to get it to boot and run from the Monterey drive??

Perhaps you could share the trick as I am stuck. I see lots of people successfully installing it on MP 5,1 but not 3,1...

I did manage to run Catalina on it (a bit buggy) was hoping Monterey would be better and more stable for protools and music studio applications.

I simply did the Open Core Legacy patcher process similar to what video the other user posted however there are other steps needed if you want to boot into OS without your thumb drive installed.

Remember the install process has 3 - 4 reboots so you have to wait quite a few cycles before the install is completed. To boot without your USB drive, you will need to likely complete the following steps.

1. Install OpenCore to your intended new boot drive. (this needs to be done in a working OS)
- I'd also suggest going into options and set a longer boot picker selection time.

2. Boot into recovery mode (MacOS Installer also works (IIRC))
3. Go into Terminal.
4. View your drives in Diskutil
5. Mount your EFI Partition
6. Bless / set boot to your Open core EFI instance.
7. IF your system does not show boot screen (such as the case of my system) you will have to (perhaps with trial and error) blindly select your boot instance and hit enter (side arrow keys).

Link to article on this

Booting OpenCore and macOS | OpenCore Legacy Patcher

YOU HAVE TO CLICK "Note for Mac Pros/Xserves/iMacs with unflashed GPUs" to see detailed commands

My 3,1 only has one OS so my boot picker (if shown) would have few options to select.

Overall mine has been reliable and stable.

 

[Tex Tiles]

I simply did the Open Core Legacy patcher process similar to what video the other user posted however there are other steps needed if you want to boot into OS without your thumb drive installed.

Remember the install process has 3 - 4 reboots so you have to wait quite a few cycles before the install is completed. To boot without your USB drive, you will need to likely complete the following steps.

1. Install OpenCore to your intended new boot drive. (this needs to be done in a working OS)
- I'd also suggest going into options and set a longer boot picker selection time.

2. Boot into recovery mode (MacOS Installer also works (IIRC))
3. Go into Terminal.
4. View your drives in Diskutil
5. Mount your EFI Partition
6. Bless / set boot to your Open core EFI instance.
7. IF your system does not show boot screen (such as the case of my system) you will have to (perhaps with trial and error) blindly select your boot instance and hit enter (side arrow keys).

Link to article on this

Booting OpenCore and macOS | OpenCore Legacy Patcher

YOU HAVE TO CLICK "Note for Mac Pros/Xserves/iMacs with unflashed GPUs" to see detailed commands

My 3,1 only has one OS so my boot picker (if shown) would have few options to select.

Overall mine has been reliable and stable.

Thanks for that! I did the install but I get the dreaded "FORBIDDEN" symbol upon booting to the Montery drive after choosing efi in the option start sequence boot.

However the flash drive I installed from I had downloaded and used successfully to install OCP Monterey on my old iMac that I use for surfing so perhaps I need to start afresh and download it again for a different computer... (?)

 

[Tex Tiles]

Flawless!
View attachment 2326281

Thank you! I might start over and try again. I get the forbidden symbol after what I thought was a successful installation from the flash drive.

 

[840quadra]

Sadly no assistance to my original call for help, but I have come up with something that works for me.

Since HDMI audio is working, I am simply outputting audio from my TV (via Optical) back into my surround system. I may look into USB audio devices at a later date, but I can at least get some reasonable sound out of this thing now.

Thank you! I might start over and try again. I get the forbidden symbol after what I thought was a successful installation from the flash drive.

I have run into that when trying to boot into the OS without using OCLP, or, using an OCLP instance that is mismatched with the one needed / used with that OS install.