Hi OCLP Team,
First of all, thank you for your amazing work on keeping older Macs alive.
I would like to report a serious issue I encountered regarding Logic Pro on my system. Here's my setup:
- Model: MacPro6,1
- CPU: 2.7GHz 12-core Intel Xeon E5
- GPU: Dual AMD FirePro D500 3GB (Metal 2 supported)
- RAM: 128GB 1066 MHz DDR3
- OS: macOS Sequoia 15.5 (upgraded from Ventura using OCLP)
- OCLP Version: 2.4.0
### Problem:
Logic Pro is currently **completely unusable** on this system.
- Audio Unit (AU) scan is extremely slow.
- Even after the scan is finished, the system continuously hangs and freezes when creating new tracks or simply navigating the UI.
- The app frequently goes into 'Not Responding' state for several minutes.
### What I’ve Tried:
- Disabled System Integrity Protection (SIP)
- Disabled Gatekeeper
- Skipped AU plugin validation using the following terminal commands:
```bash
sudo spctl --master-disable
defaults write com.apple.audio.InfoHelper "AudioUnitValidation" -bool false
Despite all these attempts, Logic Pro remains unusable.
Tested Versions:
I tested the following Logic Pro versions:
11.2
11.0
10.8.1
10.6.1
10.5.0
10.4.4
None of them work properly. Versions prior to 10.7 fail to launch at all on Sequoia 15.5.
My Questions:
Is this an issue specific to my hardware?
Or is this a known compatibility problem between OCLP and macOS Sonoma/Sequoia for Logic Pro users?
It would be really helpful if this issue could be documented for other users who rely on Logic Pro, so they can avoid upgrading to macOS 14 or 15 until proper support is confirmed.
If there are any plans to improve GPU compatibility for MacPro6,1 in future OCLP releases, I would love to hear about it.
Thank you so much for your efforts!
Kind regards,
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