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Ricoh PCIe SDXC/MMC Host Controller does not detect SD cards

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https://bbs.archlinux.org – Hi,My Lenovo Thinkpad X230 has an integrated 4-in-1 SD card reader (SD/SDHC/SDXCMMC), but it does not detect any card I insert. The two cards I have are working correctly under my sister's MacBook. My kernel version is 3.6.10. Here's the output of a few commands :lspci -k00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) Subsystem: Lenovo Device 21fa 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) Subsystem: Lenovo Device 21fa Kernel driver in use: i9 (HowTos)