Intel NUC8i7BEK - Can't boot with eGPU plugged in
First of all, complete no-go on 1909... Error 12. Assuming this is the patch issue being discussed in other threads(?) I can get it working with 1809, so sticking with that for now.
The issue I'm having is, I can't boot with the eGPU connected. Windows starts to boot, and then the boot screen (with the spinny dots) hangs. The only way I can get it to work is if I let it boot with the eGPU disconnected, then hotplug the eGPU. Latest drivers from Intel, latest BIOS, latest Thunderbolt drivers. Everything is up to date as far as I can tell. There doesn't appear to be a TB3 firmware upgrade for this particular NUC... so guessing it's fine.
Is this normal? Any known workarounds for this?
@wickedporter Boot hang with an eGPU connected is usually a sign of firmware compatibility. Have you checked the NUC BIOS settings to see if there's an option to enable Thunderbolt Boot Support? Another idea to check is the firmware version of Radeon VII.
Thanks for the suggestions! There is no firmware/BIOS update available for the Radeon VII right now.
NUC BIOS has some ThunderBolt security settings, the security feature name is "Thunderbolt Security Level" and I have four options: Legacy Mode, Unique ID, One time saved key, DP++ Only. It is currently set to "Unique ID"
In boot Settings, Thunderbolt is enabled. There are no other thunderbolt settings in the boot options. Secure boot is turned off (was on before, no difference)
@wickedporter Try "Legacy Mode" and see if your NUC would boot with the eGPU connected.
Thank you @itsage! I think I'm getting a bit closer. Legacy Mode seems to have helped a bit... some additional odd behavior though.
(note: fast boot is disabled)
If I shut down the machine from Windows, the machine gracefully shuts off as expected. I can then hit the power button and it will boot in to Windows with no issues, however the BIOS and Windows Boot screen does not appear.
If I reboot from Windows, the machine will reboot and the BIOS post screen appears briefly, indicating that I can press F2 to enter setup, etc. Then the Windows boot screen (just the spinny thing in the middle) initiates and hangs, just as before. If I power it down completely and power it back up, it will act just like above ... no splash screens, no BIOS/post screens, just straight to Windows GUI/login.
So basically, everything works except restart from Windows. This is certainly acceptable ... but ODD!
I'll keep tinkering... this version of the BIOS was just released on 10/23, I'm wondering if there is a bug with it when using an eGPU.
I use an older NUC6i7KYK and system BIOS versions 62 and higher for this model resulted in a Radeon VII in a Thunderbolt enclosure having problems similar to what you describe. And if you upgrade a NUC6i7KYK to a 62 or higher version, you cannot downgrade to a 61 or lower version.
User of eGPUs at my job.