Ubuntu 16.04虚拟机运行GNURadio报错：未找到支持设备

Hey there, let's work through this frustrating device detection error you're hitting with GNURadio and RTL-SDR on your Ubuntu 16.04 virtual machine. I've dealt with this exact issue a few times, so here are the step-by-step fixes that should get your setup working:

1. Confirm your RTL-SDR is passed through to the VM #

Virtual machines often struggle with USB device access first. Let's check if the device is visible inside your VM:

• Run this command in your Ubuntu terminal to list connected USB devices:

  lsusb
  

  Look for a line like ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T — if you don't see this, you need to pass the device from your host machine to the VM:
  • Open your VM's settings, go to the USB controller section, add the RTL-SDR device to the list of accessible USB devices, and ensure it's set to connect exclusively to the VM (not the host).

2. Fix user permissions for USB access #

By default, regular users don't have permission to access RTL-SDR devices. Let's fix that:

• Create a udev rule file to grant access:

  sudo nano /etc/udev/rules.d/rtl-sdr.rules
  

  Paste this line into the file:

  SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="2838", GROUP="plugdev", MODE="0666"
  

• Save and close the file, then reload udev rules:

  sudo udevadm control --reload-rules && sudo udevadm trigger
  

• Add your user to the plugdev group to apply the permissions:

  sudo usermod -aG plugdev $USER
  

• Log out and back in for the group changes to take effect.

3. Verify RTL-SDR tools can detect the device #

Let's rule out hardware/driver issues with the basic rtl-sdr utilities:

• Install the tools if you haven't already:

  sudo apt-get install rtl-sdr
  

• Run the test command to check device detection:

  rtl_test -t
  

  If you see output about the RTL-SDR being detected, great! If not, unload the default DVB-T driver that might be conflicting:

  sudo rmmod dvb_usb_rtl28xxu
  

  Then run rtl_test -t again — this should now pick up the device.

4. Ensure gr-osmosdr is compiled with RTL-SDR support #

Your gr-osmosdr version mentions built-in rtl_tcp support, but let's confirm it was compiled with full RTL-SDR enabled:

• If you installed gr-osmosdr from source, re-run the cmake configure step with explicit RTL support:

  cd /path/to/gr-osmosdr/build
  cmake -DENABLE_RTL=ON ..
  make && sudo make install
  sudo ldconfig
  

• If you used a PPA to install, make sure you're using a trusted GNURadio PPA that includes proper RTL-SDR integration for Ubuntu 16.04.

5. Double-check your GNURadio Companion source configuration #

Sometimes auto-detection fails, so manually specifying the device can help:

• In your GNURadio flowgraph, select the osmosdr Source block.
• In its properties, set the Device Arguments field to rtl=0 (this targets the first RTL-SDR device connected).
• Save and re-run your flowgraph.

Your original error for reference: #

Generating: '/home/natalia/Downloads/top_block_NoGUI.py'
Executing: /usr/bin/python -u /home/natalia/Downloads/top_block_NoGUI.py
Using Volk machine: avx2_64_mmx_orc
gr-osmosdr v0.1.4-98-gc653754d (0.1.5git) gnuradio 3.7.9
built-in source types: file fcd rtl_tcp rfspace redpitaya
FATAL: No supported devices found to pick from. Trying to fill up...

内容的提问来源于stack exchange，提问作者Natiya