[USRP-users] B205 Mini Problem

Richard Bell richard.bell4 at gmail.com
Sun Oct 8 18:31:21 EDT 2017


Hi all,

I'm trying to use a B205 Mini on my Surface Book with Ubuntu 16.04 running
in a virtual box. When I press the reset button on the B205 mini itself,
and then run uhd_find_devices, this is what is returned:

~$ uhd_find_devices
[INFO] [UHDlinux; GNU C++ version 5.4.0 20160609; Boost_105800;
UHD_3.11.0.git-233-g25fc32af]
[INFO] [B200] Loading firmware image:
/home/iris/Documents/grprefix1/share/uhd/images/usrp_b200_fw.hex...
[ERROR] [USB] USB open failed: insufficient permissions.
See the application notes for your device.

[ERROR] [USB] USB open failed: insufficient permissions.
See the application notes for your device.

--------------------------------------------------
-- UHD Device 0
--------------------------------------------------
Device Address:
    serial: 3123C65
    name: B205i
    product: B205mini
    type: b200


It is seeing the device even though the permissions error occurs. In the
past whenever I've run into these USB permissions problems, I copied the
uhd-usrp.rules file to /etc/udev/rules.d and it solved it. This time it's
not going away.

When I run uhd_usrp_probe I get this error:

~$ uhd_usrp_probe
[INFO] [UHDlinux; GNU C++ version 5.4.0 20160609; Boost_105800;
UHD_3.11.0.git-233-g25fc32af]
[INFO] [B200] Detected Device: B205mini
[INFO] [B200] Loading FPGA image:
/home/iris/Documents/grprefix1/share/uhd/images/usrp_b205mini_fpga.bin...
[INFO] [B200] Operating over USB 3.
[ERROR] [UHD] Exception caught in safe-call.
  in virtual radio_ctrl_core_3000_impl::~radio_ctrl_core_3000_impl()
  at
/home/iris/Documents/grprefix1/src/uhd/host/lib/usrp/cores/radio_ctrl_core_3000.cpp:73
this->peek32(0); _async_task.reset(); -> AssertionError: accum_timeout <
_timeout
  in uint64_t radio_ctrl_core_3000_impl::wait_for_ack(bool)
  at
/home/iris/Documents/grprefix1/src/uhd/host/lib/usrp/cores/radio_ctrl_core_3000.cpp:230

Error: AssertionError: accum_timeout < _timeout
  in uint64_t radio_ctrl_core_3000_impl::wait_for_ack(bool)
  at
/home/iris/Documents/grprefix1/src/uhd/host/lib/usrp/cores/radio_ctrl_core_3000.cpp:230

I've run uhd_images_downloader to make sure I was using the latest image as
well. I'm not sure how to fix this.
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