No supported tuner found

Hi All, I recently purchased a couple of DVB-sticks on Amazon, titled: "RTL-SDR, FM+DAB, DVB-T USB Stick Set with RTL2832U & R820T. Great SDR for SDR#, HDSD" I got "No supported tuner found" when running the rtl_test command. I see others have had the same issue, so when I finally figured it out, I thought some of you might be interested. First of all, this stick has a FC0012 tuner despite the title. Secondly this stick is obliviously wired differently than other sticks with FC0012 because it needs different gpio settings. I added a few lines to the rtlsdr_open() function in librtlsdr.c, just before probing for FCxxx:     /* initialise GPIOs */     rtlsdr_set_gpio_output(dev, 0);     rtlsdr_set_gpio_output(dev, 3);     rtlsdr_set_gpio_output(dev, 4);     rtlsdr_set_gpio_output(dev, 5);     rtlsdr_set_gpio_output(dev, 6);     rtlsdr_set_gpio_bit(dev, 3, 1);     rtlsdr_set_gpio_bit(dev, 4, 0);     rtlsdr_set_gpio_bit(dev, 6, 0);     /* reset tuner before probing */     rtlsdr_set_gpio_bit(dev, 5, 1);     rtlsdr_set_gpio_bit(dev, 5, 0); With this modification the tuner comes a live and everything works. Kindest regards, Gabor Mikes