acer : Enable SD card reading

To activate the SD card reader on a laptop running Ubuntu:
1 – Back up your module file:
sudo cp /etc/modules /etc/modules.bak

2 – Edit the module file and add the « tifm_sd » module at the end of the file
sudo gedit /etc/modules or sudo vi /etc/modules

3 – Restart the machine or activate modules:
sudo modprobe tifm_sd