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Hi Some months ago, my SD card reader was working fine. Since then I have upgraded to newer kernels several times, and probably made other changes to the system as well. Now, my machine wont recognize that a card is inserted at all, and I'm struggling to find out which pieces of the puzzle to debug. My machine is a Lenovo Thinkpad P51 with an integrated card reader. I have a kernel built from gentoo-sources with my own configuration, but I haven't made any significant changes to this since the card reader worked as far as I can recall. After some googling I discovered that the config