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[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580

Hi @CaseySJ,

I haven't been following the thread for a little bit, so I'm not sure if it's buried somewhere, but do you have a guide for updating to Catalina on this thread? I just ordered a portable SSD to back up my entire system, so I'm almost ready to go!

Thanks!
 
shl615 said:
Hi @CaseySJ,

I haven't been following the thread for a little bit, so I'm not sure if it's buried somewhere, but do you have a guide for updating to Catalina on this thread? I just ordered a portable SSD to back up my entire system, so I'm almost ready to go!

Thanks!
Click to expand...

The top of the guide has been updated, RE:

Upgrading to macOS 10.15 Catalina? Please see this and this first!
 
CaseySJ said:
This is a good summary. Based on other users' reports it seemed that macOS will not boot with iMacPro1,1 if iGPU is enabled, but your experience is quite the opposite. If IGPU does indeed work with iMacPro1,1 then by all means keep it enabled. I may have to reverse my earlier statements! :)
Click to expand...

I was able to load headless iGPU on iMacPro1,1 with the free2000 driver.
 
Why is the LED of my memory still lit after my mac sleep? still After one night, can it be repaired? z390 Designare ，i5 9600k，G.Skill TridentZ 8*2，RX580，whenever 10.14 or 10.15，the problem exists，thanks。
 
neonline said:
Why is the LED of my memory still lit after my mac sleep? still After one night, can it be repaired? z390 Designare ，i5 9600k，G.Skill TridentZ 8*2，RX580，whenever 10.14 or 10.15，the problem exists，thanks。
Click to expand...
LED of memory will always remain ON during sleep. Here's why:
  • Sleep is not the same as Shutdown.
    • During shutdown, everything in memory is erased.
    • When we start up again, everything has to be reloaded from scratch.
  • Sleep is not the same as Hibernate.
    • During hibernate, everything in memory is saved into a disk file.
    • When we start up again, the contents of memory are restored from the saved file so computer can continue from where it left off.
But during Sleep:
  • Contents of memory are not saved to disk and not cleared.
  • All other components are powered down, but memory remains powered-on.
  • This is why we can wake up from sleep so quickly and continue where we left off.
Because memory remains powered-on, LEDs on memory modules also stay powered on. Maybe in the future we will be able to control LEDs on memory modules separately.
 
Last edited:
Supplemental update successful, build 19A602. Used Software Update through Sys Prefs.
 
CODYQX4 said:
I was able to load headless iGPU on iMacPro1,1 with the free2000 driver.
Click to expand...

@CaseySJ I made another interesting discovery on my machine in testing.

I was watching memmap and in the past I could only ever boot with slide=0. I was checking what would free memory in BIOS settings.

If I enable iGPU, my second available region, where 100000 starts had 14580 pages listed.

If I disable iGPU this increases to 19580 pages for that available region.

Now, I use DVMT Pre-Allocated 64MB and DVMT Total 256MB. Changing the latter to 128MB had no effect on that region, but setting the former to 32MB got me to 16580 pages. I left it at 32MB and 256MB.

With 16580 pages, I was able to boot iMacPro1,1+Headless iGPU+slide=0+AptioMemoryFix successfully, and I would assume changing SMBIOS back to iMac19,1 would be fine.

I don't know the implications of setting DVMT Pre-Allocation to a lower value, if that would cause any issues or not. If not, this is a viable solution for me to not have to disable my iGPU, which led me to iMacPro1,1 to deal with the broken preview of JPEG files.
 
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