Hello myvivre, unfortunately I'm not experienced enough to figure out how to hot plug thunderbolt, but if you really need to use thunderbolt device, you can plug them in before you turn on the laptop and they should show up like they normally do. As for "EFI_1", have you changed your bios...
Can you check if you have secure boot disabled? Turn on csm as well. You need to replace efi on your harddrive. Go into windows, download
https://www.diskgenius.com
And load EFI sector on your macos drive. There will be a EFI folder, replace the whole thing with my EFI folder.
If it still...
Only when I'm using IPGU and Nvidia card at the same time. So my laptop screen is driven by IGPU, and I can connect it to an external monitor and use the Nvidia card like a regular computer.
Not much, thunderbolt hot plug is not working and I'm having some issue with dw 1560 wifi card. Other than that, p71 is probably the only laptop with discrete graphics working without gettingg into bulky gaming laptops.
I'm glad it worked out for you. I figured out a new method that allows you to use both igpu and nvidia gpu at the same time. Not sure if it's something you need.
It's unlikely they are using mxm design on p73 let alone p53 since they are trying to appeal to the slimmer design market. And new rtx cards draw too much power without maxq design to cut back the tdp.
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