Comment 43 for bug 88992

lspci | grep ricoh -i
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19)
03:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 0a)
03:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 05)
03:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev ff)

sudo modprobe -r sdhci
sudo modprobe -r mmc_block
sudo modprobe sdhci
sudo modprobe mmc_block

Then I insert the card into the reader. The reader device appears in Computer:/// but does not mount.