Why does Ubuntu not detect my SD card?

Question

I can't mount my SD card. I'm using Ubuntu 12.04 LTS on an Asus K55V (Intel), and I have a sd card slot, but Ubuntu doesn't detect when I put a SD card in the slot. Not Ubuntu nor other program.

Answer 1

Run these commands from a command prompt:

sudo modprobe -r r852
sudo modprobe -r sdhci_pci
sudo modprobe r852
sudo modprobe sdhci_pci

This uses modprobe to unload and reload the device drivers (in this case kernel modules) to automatically detect the SD card into the kernel.

Source codes

• r852 driver: Ricoh 85xx xD/smartmedia card reader driver
• sdhci_pci driver: Secure Digital Host Controller Interface PCI driver

Answer 2

For Broadcom Corporation BCM57765/57785, in addition to the answer below, I had to add lines to modprobe.d (before commands above)

$ sudo sh -c 'echo options sdhci debug_quirks=0x40 >> /etc/modprobe.d/sdhci-pci.conf'

AND

$ sudo setpci -s 00:1c.2 0x50.B=0x41

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