I was using the June version successfully but have rebuilt using the latest 07-08-2017 OGN build. All loads as expected until the point where you run ./do-cfg.sh. All the standard questions are fine but when it comes to initialise and test the RTLSDR it just drops through all the gain tests in less than a second without actually doing anything.
If you manually run the test using, for instance, the command
sudo ./gsm_scan --ppm 1 --gain 50
the test returns nothing and it returns immediately to the command prompt.
Interestingly if you omit the sudo then you get a 'Segmentation Fault' message returned. The earlier build did not require the sudo in order to work correctly.
Any thoughts please?
(the earlier build still works so nothing wrong with the equipment and I've repeatedly rebuilt the 07-08 image from scratch on different memory cards with identical results. The RTL is visible in the USB list.).