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sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
There seems to be a USB power issue on OCLP Monterey 12.4. I don't have any diagnostic gear to confirm this but I can't think what else could explain it. I have a USB powered MIDI Keyboard (Kawai VPC1) which no longer works in Monterey but when I switch back to Catalina it's fine again. In Monterey the power LED flashes on the Keyboard which probably indicates a power issue but the clincher is when I unplug the USB cable from the Mac Pro and plug it into my monitor the VPC1 works perfectly.

I don't know if it related but I'm sometimes unable to wake from sleep with a keypress or mouse move. Apart from these issues everything else appears to be pretty solid. I'm using OCLP 0.7.4 BTW.
 
Last edited:

tsialex

Contributor
Jun 13, 2016
13,094
13,297
It's not power, but BigSur and Monterey not supporting USB1.1 devices anymore. Workaround is to connect via a hub.
 

sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
That’s what I’ve had to do (happily my monitor has a 4 port hub built in) but thanks for taking the time to pass that on. Appreciated.
 

sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
I'm still stuck with what I thought was a sleep crash but I'm starting to wonder if that's actually what it is. Basically If I leave the Mac for a while it's virtually always crashed when I come back. The power blinks dimly and I have to hard reset. If you're reading this tsialex I wonder if you could cast your expert eye over this short crash report.
 

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sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
Thought it might be the firewire connection to my Audio Interface so used USB2 instead. Still doing the sleep crash thing unfortunately.
 

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tsialex

Contributor
Jun 13, 2016
13,094
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First thing is to check your RTC battery voltage and replace the BR2032 battery if the voltage is below 3.00V.

Second thing is to check your config with a fully supported Mojave install, to see if the same thing happens. Proceed to the usual diagnostic steps.

It's useless to diagnose anything with unsupported installs.
 

sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
Does this have to be the Panasonic BR2032? I've just spent an hour trying to source one. Shortest lead time seems to be 4 weeks. I take it the CR2032 is no good.

Can I check my config with High Sierra? Would save all the head scratching involved in upgrading to Mojave. Also my only successful install of OCLP Monterey so far has been starting from High Sierra and I still have one more 2009 Mac Pro and a 2010 Mac Pro to go.

What are the "usual diagnostic steps"?
 

sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
Thoroughly tested this Mac Pro running High Sierra and it sleeps and wakes without issue. No crashes.
Is the Duracell BR2032 a satisfactory substitute? Sourcing the Panasonic version seems problematic without long wait.
 

tsialex

Contributor
Jun 13, 2016
13,094
13,297
Does this have to be the Panasonic BR2032?
Yes.
I've just spent an hour trying to source one. Shortest lead time seems to be 4 weeks. I take it the CR2032 is no good.
No, CR2032 chemistry is not adequate for the usage and temperatures below the GPU.
Can I check my config with High Sierra? Would save all the head scratching involved in upgrading to Mojave.
Wait a minute, you are trying Monterey without doing the Mojave firmware upgrades?
Also my only successful install of OCLP Monterey so far has been starting from High Sierra and I still have one more 2009 Mac Pro and a 2010 Mac Pro to go.

What are the "usual diagnostic steps"?
Apple Technician Manual diagnostics steps, AHT/ASD.
 

tsialex

Contributor
Jun 13, 2016
13,094
13,297
Thoroughly tested this Mac Pro running High Sierra and it sleeps and wakes without issue. No crashes.
Is the Duracell BR2032 a satisfactory substitute? Sourcing the Panasonic version seems problematic without long wait.
AFAIK Duracell don't make BR2032 batteries, just CR2032. Only Panasonic and Matsushita still make it, but the later one is the parent company of Panasonic.

CR2032 can be used temporarily, but a CR2032 will cook below the GPU and die within weeks/months instead of the ten years of the BR2032 expected life.
 
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sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
No, CR2032 chemistry is not adequate for the usage and temperatures below the GPU.

Will have a very long wait but am ordering
 

sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
Apple Technician Manual diagnostics steps, AHT/ASD.
Thanks but I'm starting to think I may just have to switch sleep off at least for the time being. BTW I now have 2 other MPs running OCLP Monterey without sleep issues so wondering if it could be Logic Pro or the MOTU drivers for my Audio Interface. I trying removing that stuff from the equation.
 

sirroderick

macrumors regular
Original poster
Jun 13, 2018
143
9
London
AFAIK Duracell don't make BR2032 batteries, just CR2032. Only Panasonic and Matsushita still make it, but the later one is the parent company of Panasonic.

CR2032 can be used temporarily, but a CR2032 will cook below the GPU and die within weeks/months instead of the ten years of the BR2032 expected life.
Good to know.
 
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