SD card not detected in Ubuntu 12.04 LTS!!
  Problem : I inserted my 32GB of SD card in the slot of my Lenevo L430 laptop. Unfortunately it could not be detected. I found out that i dont have the device driver installed.    Solution : I installed the device driver and bingo. Please find the steps which i did to solve this problem.   1. Find out the make of the SD card reader. I found out that the card reader is known to OS but somehow not reading the SD card in it.   $ sudo lspci -vnn | grep -A5 RTS5229   01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader [10ec:5229] (rev 01)       Subsystem: Lenovo Device [17aa:21f7]       Flags: bus master, fast devsel, latency 0, IRQ 16       Memory at f1e00000 (32-bit, non-prefetchable) [size=4K]       Capabilities: [40] Power Management version 3       Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+   Go to the realtek site and download the device driver for RT...