I solved temporally like this:

I modified /etc/default/grub on line

GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash”

and replace it for:

GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash pciehp.pciehp_force=1″

 after that I type:

sudo update-grub

and finally reboot, and works.

-- 
Card Reader doesn't work if memory is inserted after boot
https://bugs.launchpad.net/bugs/453742
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