Hi, I resolved the "[ERROR] [USB] USB open failed: insufficient permissions."
problemby the following commands,sudo cp uhd-usrp.rules /etc/udev/rules.d/sudo
udevadm control --reload-rulessudo udevadm triggerHowever, I still get the
warning if I executed the uhd example programs without "sudo"[WARNING] [UHD]
Unable to set the thread priority. Performance may be negatively
affected.Please see the general application notes in the manual for
instructions.EnvironmentError: OSError: error in pthread_setschedparamFor
example,sudo ./tx_waveforms .. -> No such warning./tx_waveforms .. -> [WARNING]
[UHD ].....Is this a bug? or normal behavior?Regards,Hojoon
-----------------------Original Message-----------------------From: Hojoon
Yangvia USRP-users <usrp-users@lists.ettus.com>To: "Marcus D. Leech via
USRP-users" <usrp-users@lists.ettus.com>Sent date: 2018-05-08 11:33:40 GMT
+0900 (Asia/Seoul)Subject: Re: [USRP-users]UHD installation
Thanks Marcus.
I did it. But, nothing changed. I will re-install the uhd and come back if
still have problems.
But, is there any relationship between kernel version and uhd version? I use
UHD 3.11.
currently, I use Ubuntu 14.04.5 LTS and the kernel version is 4.2.0-42-generic
Because, the latest kernel version NI RIO supports is 4.2.x. I need it for
USRP X310.
Regards,
Hojoon
-----------------------Original Message-----------------------
From: "Marcus D. Leech via USRP-users" <usrp-users@lists.ettus.com>
To: usrp-users@lists.ettus.com
Sent date: 2018-05-08 10:47:47 GMT +0900 (Asia/Seoul)
Subject: Re: [USRP-users] UHD installation
On 05/07/2018 09:42 PM, Hojoon Yang via USRP-users wrote:
Hi,
When I executed the "uhd_find_devices"
I got "[ERROR] [USB] USB open failed: insufficient permissions."
However, when I put sudo in it(i.e. sudo uhd_find_devices", there is no
such error.
Also, when I typed "./tx_waveforms ..."
I got an following WARNING
"[WARNING] [UHD] Unable to set the thread priority. Performance may be
negatively affected.
Please see the general application notes in the manual for instructions.
EnvironmentError: OSError: error in pthread_setschedparam"
similarly, the warning disappeared when I put the sudo in it.
Marcus said it is incomplete installation, if the sudo needed.
As Marcus recommended, I created(because there was no such file)
/etc/udev/rules.d/10-usrp.rules and put the following contents.
# # Copyright 2011,2015 Ettus Research LLC # # This program is free
software: you can redistribute it and/or modify # it under the terms of the GNU
General Public License as published by # the Free Software Foundation, either
version 3 of the License, or # (at your option) any later version. # # This
program is distributed in the hope that it will be useful, # but WITHOUT ANY
WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the # GNU General Public License for more details. #
# You should have received a copy of the GNU General Public License # along
with this program. If not, see <http://www.gnu.org/licenses/>. # #USRP1
SUBSYSTEMS=="usb", ATTRS{idVendor}=="fffe", ATTRS{idProduct}=="0002",
MODE:="0666" #B100 SUBSYSTEMS=="usb", ATTRS{idVendor}=="2500",
ATTRS{idProduct}=="0002", MODE:="0666" #B200 SUBSYSTEMS=="usb",
ATTRS{idVendor}=="2500", ATTRS{idProduct}=="0020", MODE:="0666"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2500", ATTRS{idProduct}=="0022",
MODE:="0666" SUBSYSTEMS=="usb", ATTRS{idVendor}=="3923",
ATTRS{idProduct}=="7813", MODE:="0666" SUBSYSTEMS=="usb",
ATTRS{idVendor}=="3923", ATTRS{idProduct}=="7814", MODE:="0666"
However, nothing changed.
Do I need to re-install the uhd?
Regards,
Hojoon
You also need to:
sudo udevadm control --reload-rules
And then replug your USRP
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