Comment 17 for bug 971876

with
lspci
using mint14 64 on a new laptop whose card reader did not appear

and seeing
 ~ $ lspci

04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5289 (rev 01)

I downloaded
http://planet76.com/drivers/realtek/rts-bpp-dkms_1.1_all.deb
double-cliked it to install

then
sudo pluma /lib/udev/rules.d/80-udisks.rules

to add the line
DRIVERS=="rts_bpp", ENV{ID_DRIVE_FLASH_SD}="1"

and restart

the card-reader is active