When the micro SD card is inserted in the card reader, it is mounted and the folder opens automatically, but on the desktop the icon is not a red SD icon but a USB key icon. I reported a bug: 751232
When I unmount the SD card then I pull it out and put it in the card reader again, it doesn't re-mount. Looks like bug 743303. I reported bug 751644.
Same bug as CarlaSella in the SD card icon.
Re-mount successful.