Re: [Discuss-gnuradio] Get error 3 when trying to connect to RTL-SDR

[Cinaed Simson]

Try installing the enclosed file rtl-sdr.rules in

  /etc/udev/rules.d/

as root.

Then as root, type

  udevadm trigger
  udevadm control --reload

If that doesn't work, then reboot it.

-- Cinaed


On 09/28/2017 02:29 PM, Ed Troy wrote:
> Hi,
> 
> I tried that, but I am still getting an error as shown below:
> 
> address@hidden:~/prefix/default$ gnuradio-companion
> <<< Welcome to GNU Radio Companion 3.7.12git-269-g8aa965c6 >>>
> 
> Block paths:
>     /home/edtroy/prefix/default/share/gnuradio/grc/blocks
> 
> Loading:
> "/home/edtroy/prefix/default/src/gr-tutorial/examples/tutorial6/gr-tutorial-broadcast-fm-rx.grc"
>>>> Done
> 
> Generating:
> '/home/edtroy/prefix/default/src/gr-tutorial/examples/tutorial6/top_block.py'
> 
> Executing: /usr/bin/python2 -u
> /home/edtroy/prefix/default/src/gr-tutorial/examples/tutorial6/top_block.py
> 
> 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.
> 
> I changed the file I wrote to /etc/udev/rules.d/rtl-sdr.rules to the
> following--changing 2838 to 4014 since that was the other instance of
> the dongle that I found, as explained below. I also tried with no
> rtl-sdr.rules file and that did not work either:
> 
> SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="4014",
> GROUP="adm", MODE="0666", SYMLINK+="rtl_sdr"
> 
> 
> Ed
> 
> 
> On 9/28/2017 4:20 PM, Federico 'Larroca' La Rocca wrote:
>> 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 <address@hidden
>> <mailto:address@hidden>>:
>>
>>     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:
>>
>>     address@hidden:/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
>>
>>
>>     _______________________________________________
>>     Discuss-gnuradio mailing list
>>     address@hidden <mailto:address@hidden>
>>     https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>     <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio>
>>
>>
> 
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rtl-sdr.rules
Description: Text document