Olimex microSD with Debian shows nothing

[caru]

I tried to insert the micro SD sold by Olimex and then attached a cable to USB OTG, but the screen says "no signal detected". Am I doing something wrong?
I've also tried to push the power button, nothing. The reset button, nothing...

[Lurch]

Don't try to power the A20 from the OTG socket. Use a 12V @1+A supply on the barrel connector and you'll be fine.

[caru]

Thank you, that worked!