RawTherapee and the other Linux RAW software can't hold a candle to Lightroom. I don't even like Lightroom, but the Linux RAW editors are just not very good.
My advice to the OP is to tell them to buy a Mac, get Apple Care and let Apple Genius Bar deal with it.
> RawTherapee and the other Linux RAW software can't hold a candle to Lightroom.
This is just plain false. I used AfterShot Pro and I think it's better than Lightroom. The only reason that I switched back to Darktable is because I don't want to locked in the proprietary software.
My advice to the OP is to tell them to buy a Mac, get Apple Care and let Apple Genius Bar deal with it.