Hi,
I think you've forgotten to blacklist the dvbt driver. In Ubuntu, you have
to add the following line to /etc/modprobe.d/blacklist.conf: blacklist
dvb_usb_rtl28xxu.
best
Federico
2017-09-28 17:11 GMT-03:00 Ed Troy <et...@aeroconsult.com>:
> I am trying to run a simple fm receiver example using a RTL-SDR dongle. It
> is connected. But, when I run, I get the following errors:
>
> gr-osmosdr v0.1.4-98-gc653754d (0.1.5git) gnuradio 3.7.12git-269-g8aa965c6
> built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf bladerf
> rfspace airspy soapy redpitaya
> [INFO] [UHDlinux; GNU C++ version 6.3.0 20170406; Boost_106200;
> UHD_3.11.0.git-191-g1cd96dde]
> Using device #0 Generic RTL2832U OEM
> usb_open error -3
> Please fix the device permissions, e.g. by installing the udev rules file
> rtl-sdr.rules
>
> FATAL: Failed to open rtlsdr device.
>
> Trying to fill up 1 missing channel(s) with null source(s).
> This is being done to prevent the application from crashing
> due to gnuradio bug #528.
>
>
> So, I did a lsusb command and got the following:
>
> edtroy@ubuntu:/etc/udev/rules.d$ lsusb
> Bus 001 Device 004: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
> Bus 001 Device 002: ID 0bda:4014 Realtek Semiconductor Corp.
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 002 Device 004: ID 0e0f:0008 VMware, Inc.
> Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
> Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
>
> I'm not sure which is the device that I should use, but I think it is
> Device 004. So, I wrote a file named rtlsdr.rules that I put in the
> directory /etc/udev/rules.d/ . That file consists of the following:
>
> SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="2838",
> GROUP="adm", MODE="0666", SYMLINK+="rtl_sdr"
>
> But, when I try to run the example, I still get the above error. Any ideas
> what I am doing wrong and need to do to get RTLSDR dongle to work?
>
>
> Ed
>
>
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