[USRP-users] USB problems

Marcus Müller marcus.mueller at ettus.com
Tue Jul 28 18:01:59 EDT 2015


You need to uninstall all these three packages.

On 29.07.2015 00:01, Vsr Ravi wrote:
> I see that the libuhd, libuhd003 and uhd-host packages have been 
> installed from the software center but the uhd folder has not been 
> installed. So can you please suggest me as to what I can do further. 
> Sorry for this as I am new to using this USRP .
>
> Thanks,
> Ravi
>
>
>
> On Tuesday, 28 July 2015 4:48 PM, Marcus Müller 
> <marcus.mueller at ettus.com> wrote:
>
>
> Don't go around deleting arbitrary folders!
> That UHD got there some way -- either from a previous run of building 
> and installing UHD, or via the package manager of your linux.
> If the latter is the case, that's exactly the way it should be removed.
> Please check that no uhd, libuhd, libuhd3 or uhd-host packages are 
> installed.
>
> Best regards,
> Marcus
>
> PS: on unix systems, program/libraries and user data is typically kept 
> isolatedly, so don't worry about losing any work.
> On 28.07.2015 23:43, Vsr Ravi wrote:
>> Hi Marcus,
>> Thanks for the reply. I guess I need to delete one UHD folder. Is it 
>> possible to delete any UHD folder, or will be the information be lost 
>> if I perform this operation on any of the folder of UHD?
>>
>> Regards,
>> Ravi
>>
>>
>>
>> On Tuesday, 28 July 2015 4:34 PM, Marcus Müller 
>> <marcus.mueller at ettus.com> <mailto:marcus.mueller at ettus.com> wrote:
>>
>>
>> Hi Ravi,
>>
>> you seem to have two different, competing UHD installations, one in 
>> /usr/local/, and one in /usr/.
>>
>> Make sure you only have one. Again, it's important that you remove 
>> all other UHDs from your system before you install your self-built UHD.
>>
>> Best regards,
>> Marcus
>>
>> On 28.07.2015 23:31, Vsr Ravi wrote:
>>> Hi,
>>> Thanks for the suggestions that you have given. But I have 
>>> encountered a problem. Whenever I run the file of Latency_test 
>>> located in /usr/lib/uhd/examples, I get the error as
>>>
>>> Error: LookupError: IndexError: multi_usrp::mb_root(140725369489696) 
>>> - vector::_M_range_check
>>>
>>> And when I run "test_messages" command, it shows
>>>
>>> Segmentation fault (core dumped)
>>>
>>> Please suggest as to what I can do to prevent the above errors. 
>>> Thank you
>>>
>>> Regards,
>>> Ravi
>>>
>>>
>>>
>>>
>>> On Tuesday, 28 July 2015 4:28 AM, Marcus Müller 
>>> <marcus.mueller at ettus.com> <mailto:marcus.mueller at ettus.com> wrote:
>>>
>>>
>>> Hi Ravi,
>>>
>>> On 28.07.2015 00:55, Vsr Ravi wrote:
>>>> Hey all,
>>>> I have tried to run the USRP1 by giving the command "sudo 
>>>> uhd_usrp_probe and I get the result as below.
>>>>
>>>> linux; GNU C++ version 4.8.4; Boost_105500; 
>>>> UHD_003.009.git-144-g407e3086
>>>>
>>>> -- Opening a USRP1 device...
>>>> -- Loading FPGA image: 
>>>> /usr/local/share/uhd/images/usrp1_fpga.rbf... done
>>> ...
>>>>
>>>> Can anyone please tell what this means and what do I do next as I 
>>>> am new to gnuradio. Thanks
>>> As Martin said: Both your USRP as your UHD installation work pretty 
>>> well!
>>> The only thing is that you need to run it as root (the sudo part), 
>>> and that's not a good thing.
>>> Can you make sure that /etc/udev/rules.d/ contains the uhd.rules 
>>> file[1]? If not, copy it over from 
>>> /usr/local/lib/uhd/utils/uhd-usrp.rules, e.g. like
>>> sudo cp /usr/local/lib/uhd/utils/uhd-usrp.rules /etc/udev/rules.d/
>>>
>>> and then reboot.
>>>
>>> The next time you plug in your USRP, it should no longer be only 
>>> accessible by root.
>>>
>>> Best regards,
>>> Marcus
>>>
>>> [1] You said earlier you did
>>> cd usr/lib/uhd/utils
>>> sudo cp uhd-usrp.rules /etc/udev/rules.d/
>>> sudo udevadm control --reload-rules
>>> sudo udevadm trigger
>>> but that's not the right path, if uhd is installed to /usr/local/...
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>

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