Hi Folks,
So I'm having a terrible time with USB freezes. Having bought myself a pluggable USB 2.0 10-port hub and followed the Best practices for USB 2.0 devices I'm still getting regular USB freezes.
1. Freezes only ever occur when using an SSL UF8 Control surface and logic pro X 10.6.1.
2. I don't have any USB 3 devices at all. Only usb devices plugged into HS09 and/or HS10.
3. I only have the SSL UF8, apple wired keyboard, Dell wired mouse and Apollo X16 Thunderbolt interface connected when the freezes occur.
4. I have removed the Fenvi card for now to eliminate possibilities. Still getting freezes.
5. Freezes seem more likely on large Logic projects with high CPU usage - although I'm not certain as freezes are seemingly random.
6. Nothing in the system log.
7. Have tried using the posted SSDT to limit ports to HS09, HS10 (USB 2) HS11 (internal), SS07 (USB3), SSP1 and SSP2.
8. Since using the Pluggable hub I've noticed that the SSL UF8 disconnects and reconnects by itself sometimes.
9. The SSL UF8 is listed as a USB 2.0 hub with two devices SSL Control I/F and HID Controller which both run up to 12Mbps.
I'm using clover, not Open Core as I can't get my RX550 working on OC - Separate issue and have had limited time to try things (just need to figure out how to inject fakeID 0x67FF1002 and ATI in OC).
I used to get the freezes with my ICON Icon Pro X, with exactly the same conditions (i.e. using logic pro). Both device use the MCU protocol to communicate with logic pro.
Anyone any ideas what to try next? It's vital I get this working!