Re: rtl_test -t results in failed to open rtlsdr device #0.

Hi Joachim, "I tried many [...] but it doesn't work": so, what exactly you've tried would be kind of relevant :) I'll go out on a limb here based on statistics and say: you might have missed what http://osmocom.org/projects/sdr/wiki/rtl-sdr#rtlsdr-library-amp-capture-tool says: sudo make install-udev-rules Best regards, Marcus On 05.04.2017 07:30, pantos(a)pantokratoren.de wrote: > Hello, > > a few days ago I tried to install rtl-sdr on my raspberry pi. I'm > using a dvb-t usb stick with Realtek, RTL2838UHIDIR chipset. I build > the software following the guide in the wiki. I used two additional > switches: cmake ../ -DINSTALL_UDEV_RULES=ON -DDETACH_KERNEL_DRIVER=ON > > After installing the software I created a blacklist in cd /etc/modprobe.d: > > blacklist dvb_usb_rtl28xxu > blacklist rtl2832 > blacklist rtl2830 > blacklist rtl2838 > > After rebooting the device I tried to test rtl-sdr with rtl_test -t > and got this result: > > Found 1 device(s): > 0: Realtek, RTL2838UHIDIR, SN: 00000001 > > Using device 0: Generic RTL2832U OEM > usb_claim_interface error -6 > Failed to open rtlsdr device #0. > > I don't know how to fix this error. I tried many suggestions found via > google but it doesn't work. > > Can someone help me to fix this? > > Thanks for your help!! > > Joachim >