Didn't run all tests The echo 0 > /sys/module/glamo_mci/parameters/sd_drive really does wonders on my freerunner. Without it using a SD card I only once did see one satellite in the signal strength list of the AGPS UI. Now i Got 8 satellites -and I no more see differences between using the Freerunner with and without an SD card. I even got a fix when I started the GPS inside my flat (which needed about 3 minutes. My commercial GPS never gets a fix when inside).
Since the clock pin of all sd cards I have access to is rather high-impedance I personally would estimate the risk of setting the drive strength to "0" by default to be rather low. I am somewhat afraid of soldering wires on pins this small, but if really needed I would be willing to oscillograph if my sd card provides enough load to degrade the clock signal, though. - Gunter
