Anyone upgrade to the official Big Sur today and still have a working bootcamp w...
 
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Anyone upgrade to the official Big Sur today and still have a working bootcamp with eGPU and dGPU MBP?  

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Bob Warren
(@bob_warren)
Eminent Member
Joined: 6 months ago
 

@itsage, I don't think that (hack flags) works for MacBook pro 16 (tried.)

Also, since it's not easy to get 1903 any more (not to mention unpatched and unsupported.) It pretty much wipes (from what I can tell) the MBP 16 and eGPU for AMD off bootcamp.

Looking for some real options here as I wiped my bootcamp partition hope Big Sur helps.

 

MacBook Pro 16 2019 - i9 2400, 32GB memory 5500m - eGPU Razer Core X Chroma with RX580


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tsakal
(@tsakal)
Reputable Member
Joined: 3 years ago
 

@itsage, so mbp 13 2020 with windows 10 2004 and pci.sys would work when updating to big sir? In addition over the last week I keep getting a notice to update the apple bootcamp software, it it safe to do so? Thank you in advance .

 

A) 2020 MacBook Pro, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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itsage
(@itsage)
Founder Admin
Joined: 4 years ago
 

@tsakal, I don't have a 2020 13-in MacBook Pro to test. I'd stay with Windows 1903 V1 if using with a Radeon eGPU.

 

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2020 13" MacBook Pro [10th,4C,G] + RX 6700 XT @ 32Gbps-TB3 (CM MasterCase EG200) + Win10 1903 [build link]  


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Daniel Gaiottino
(@daniel_gaiottino)
New Member
Joined: 6 months ago
 

@itsage, exactly which Windows version are you running? Build number? I also have a 16" MBP but had to use the EFI hack to get it working.

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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Erik Tank
(@erik_tank)
Trusted Member
Joined: 7 months ago
 

I did it - I updated to RC2 Big Sur.  Booting into bootcamp does not allow my eGPU 5700xt to work anymore.  No code 12, instead i have a "PCI Express Downstream Switch Port" with an exclamation mark, and the error Code 35.

Your computer's system firmware does not include enough information to properly configure and use this device. To use this device, contact your computer manufacturer to obtain a firmware or BIOS update. (Code 35)

So at least it's not code 12 - but uhm.... what do I do now?  Any ideas?  Winver still on 18362.295 - updates are blocked.  I've got the 16" 2019 with dGPU 5500M 8GB.  

Well this is interesting.  I unplugged my eGPU's thunderbolt while still in bootcamp, and plugged it back in.  Everything sprung to life.  

For clarity - with Big Sur beta 6, I was able to leave my laptop in clamshell mode, and simply reboot from MacOS to bootcamp and after 42 seconds of Big Sur shutting down, my monitors would all spring to life in bootcamp.  Every.  Single.  Time. 

 

So I suppose I just need to hot plug it after it boots into bootcamp now.  I'll do more testing - but to confirm:

Big Sur RC2 on 2019 16" MBP 5500M 8GB with Mantiz eGPU w/5700xt works in bootcamp on 1903v1 with windows updates halted at .295 build.  

2019 16" MBP - i9 - 32GB - 5500M 8GB - 1TB SSD w/eGPU 5700XT OC


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Erik Tank
(@erik_tank)
Trusted Member
Joined: 7 months ago
 

Well I rebooted to confirm my findings and now the PCI Express Downstream Switch Port is the device with the Code 12 on it instead of Code 35.

This device cannot find enough free resources that it can use. (Code 12)

If you want to use this device, you will need to disable one of the other devices on this system.

 

Hot plugging doesn't bring it to life anymore.  Argh.

Edit: It does sort of work - I have to unplug my eGPU and wait for all my devices to disappear from device manager - then wait for the PCI Downstream Ports to disappear too - THEN I can plug it in and it springs to life... sorta.  It's missing one of my three 4K monitors.  But that typically happens with this one Dell monitor I use and I'm not sure it's really bootcamp's fault - it does it with any laptop.  Even in MacOS too.  Power cycling the monitor with the eGPU on and working fixes the third monitor.  

 

Edit2:  Long story short - my eGPU does work, but not without futzing around with the cable at startup each time.  

This post was modified 5 months ago

2019 16" MBP - i9 - 32GB - 5500M 8GB - 1TB SSD w/eGPU 5700XT OC


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tsakal
(@tsakal)
Reputable Member
Joined: 3 years ago
 

@erik_tank, why don’t you update your windows? 1903 is too old I think to support the new firmware from big sir. If you make a clone or restore you can always go back , no?

@itsage, I have 2004 working perfectly with pci.sys swap. I ll wait for somebody to confirm that it works on similar hardware before I go for it. 
however the apple software update in windows should not be an issue right? Should I do it with or without the egpu connected?

A) 2020 MacBook Pro, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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Erik Tank
(@erik_tank)
Trusted Member
Joined: 7 months ago
 
Posted by: @tsakal
  • @erik_tank, why don’t you update your windows? 1903 is too old I think to support the new firmware from big sir. If you make a clone or restore you can always go back , no?

 

For some reason swapping the pci.sys file blue screens on me.  After I updated the bridge firmware with beta 6 of Big Sur, I could no longer get my 2004 bootcamp to work with the usual port dance trick.  I went back to 1903 and since it just booted without any work or port dance or futzing around I’ve just left it here for gaming.  I’m tempted to do a 2004 upgrade now and see if Microsoft has better luck.  But... ¯\_(ツ)_/¯ 

2019 16" MBP - i9 - 32GB - 5500M 8GB - 1TB SSD w/eGPU 5700XT OC


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tsakal
(@tsakal)
Reputable Member
Joined: 3 years ago
 

@erik_tank, my friend @arouris has a Mac mini working on big sur and latest windows check out his post. 

 

A) 2020 MacBook Pro, i7-1068NG7, 32GB RAM, 1TB, EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, Samsung 49 1440p UltraWide C49RG
Mac OS Catalina 10.15.7, Internal Bootcamp Windows 10 2004 pci.sys swap.
B) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

C) 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

D) 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


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hans-st.
(@hans-st)
Trusted Member
Joined: 2 years ago
 

@, 

This Morning my Mac Mini 2014 (Big Sur 11.0.1 / Windows 20H2 19042.630) changed it's mind and started as usual. Hitting the option button I could choose between Macintosh HD and Windows - and it worked. My Akitio Node Lite with a GeForce GTX 1650 MSI Aero ITX works well with Windows. 

However, choosing Windows /Bootcamp as starting OS in MacOS systems, does not work. The Mac Mini starts again with Big Sur. I have to use the option key to boot windows.

To time, I do not regret updating to Big Sur 11.0.1.

Cheers

 

This post was modified 5 months ago

Now:    2018 Mac Mini (8th,6C,B) + RX 570 @ 32Gbps-TB3 (PowerColor Mini Pro) + macOS 10.15.4 & Win10 1909
Before: 2014 Mac Mini (4th,2C,U) + GTX 1050 Ti @ 16Gbps-TB2>TB3 (AKiTiO Node Lite) + Win10

 
2014 Mac Mini [4th,2C,U] + GTX 1050 Ti @ 16Gbps-TB2>TB3 (PowerColor Mini Pro) + Win10 1803 [build link]  


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