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High_Voltage

Lenovo Y410p/Y510p BIOS mod to enable Nvidia eGPU support

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Posted (edited)

@camwhaler I think this should be possible, as the multiplexers are controlled from the PCH, and not from EC. Might have a look into that a bit later. However, why not consider modifying the hardware? Forcing that multiplexer into a desired state is a matter of desoldering a couple of resistors.

 

Edit: For example, removing RH161 and RH171 should force HDMI output to be permanently connected to Nvidia GPU.

Edited by High_Voltage

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21 hours ago, High_Voltage said:

@camwhaler I think this should be possible, as the multiplexers are controlled from the PCH, and not from EC. Might have a look into that a bit later. However, why not consider modifying the hardware? Forcing that multiplexer into a desired state is a matter of desoldering a couple of resistors.

 

Edit: For example, removing RH161 and RH171 should force HDMI output to be permanently connected to Nvidia GPU.

Hm, that's an interesting idea, I'll probably end up trying that if other methods fail. As of right now, I'd prefer to not modify the hardware and see if it can be accomplished through software. Like maybe with a bios mod or possibly a DSDT patch  but I don't have any experience with the latter.

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