Discrete graphics for a Corebooted W530

[eunjung]

From those who already have their W530 corebooted, can you tell me if the discrete graphics is still functional? Did you test external GPU configuration with dock station?
Do you get the same W530 functionality overall after corebooting? Nothing to complain about?

Is corebooting process the same for T530 and W530 since both have the same motherboard?

[simes]

I see nobody has replied to this so I'll offer a comment. I do think there is a problem with discrete graphics on a corebooted W530. I bought a corebooted W530 from a knowledgeable, expert seller on eBay and found that the discrete graphics did not work so I could not use an external display. We tried to fix it between us but ended up bricking the laptop. The seller had a second W530 of his own to test coreboot but that ended up bricked too. He refunded me for my failed laptop, I'm pleased to say, and I have since bought another W530 but I do not intend to coreboot it.