[srslte-users] Testing srsLTE with ubuntu 18.04 and UHD_3.13.0.1

[yeatsluo at ghtinc.com]

My configuration is basically identical to yours,
I incorporated the soft reset in the batch file with srsenb, works 99% 
fine.
This is the unique issue only happens in srsLTE (not in 
openairinterface5g)

!bin/bash

for i in /sys/bus/pci/drivers/xhci_hcd/*:*; do
   [ -e "$i" ] || continue
   echo "${i##*/}" > "${i%/*}/unbind"
   echo "${i##*/}" > "${i%/*}/bind"
done

or you can use the binary version

https://github.com/dirkholz/resetusb/blob/master/src/resetusb.c


My problem is that UHD transmits barely weak signal that cannot connect 
from distances longer than 5 desks.
No matter how the TX_gain in tried.
I doubt there's a need to call hardware maintenance, if no one else has 
the same problem.

Regards,
Yeats

David Rupprecht 於 2018-08-15 20:12 寫到:
> Hi,
> 
> i have upgraded my current lab setup to ubuntu 18.04 and UHD 3.13.0.1.
> The eNodeB starts well when the PC was restarted or the freshly USB
> cable plugged in. However, starting the a second time eNodeB I get
> multiple UHD IO (30) errors
> (https://files.ettus.com/manual/error_8h.html). Starting the eNodeB a
> third time srsLTE aborts also with (Error opening RX stream: 30).
> 
> Best regards,
> David
> 
> 
> lab at lab1-OptiPlex-7050:~/srsLTE/build$ sudo srsenb/src/srsenb
> ~/enb_conf_18_06/enb.conf
> ...
> 
> LLLLLLError receiving from UHD: 30
> USRP reported the following error: None
> LLLLLLError receiving from UHD: 30
> USRP reported the following error: None
> LLLLLLError receiving from UHD: 30
> USRP reported the following error: None
> 
> ....
> 
> 
> lab at lab1-OptiPlex-7050:~/srsLTE/build$ sudo srsenb/src/srsenb
> ~/enb_conf_18_06/enb.conf
> 
> ---  Software Radio Systems LTE eNodeB  ---
> 
> Reading configuration file /home/lab/enb_conf_18_06/enb.conf...
> 
> [INFO] [UHD] linux; GNU C++ version 7.3.0; Boost_106501;
> UHD_3.13.0.1-release
> 
> Opening USRP with args: type=b200,master_clock_rate=30.72e6
> 
> [INFO] [B200] Detected Device: B210
> 
> [INFO] [B200] Operating over USB 3.
> 
> [INFO] [B200] Initialize CODEC control...
> 
> [INFO] [B200] Initialize Radio control...
> 
> [INFO] [B200] Performing register loopback test...
> 
> [INFO] [B200] Register loopback test passed
> 
> [INFO] [B200] Performing register loopback test...
> 
> [INFO] [B200] Register loopback test passed
> 
> [INFO] [B200] Asking for clock rate 30.720000 MHz...
> 
> [INFO] [B200] Actually got clock rate 30.720000 MHz.
> 
> Error opening RX stream: 30
> 
> No compatible RF frontend found
> 
> Error opening RF device
> 
> Failed to find device auto with args auto
> 
> lab at lab1-OptiPlex-7050:~/srsLTE/build$
> 
> 
> --
> M.Sc. David Rupprecht
> 
> Ruhr-University Bochum
> Research Group Information Security
> Universitätsstraße 150
> ID 2/130
> 44780 Bochum / Germany
> 
> Phone: +49 234 / 32 - 23508
> Web: www.infsec.rub.de
> _______________________________________________
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> srslte-users at lists.softwareradiosystems.com
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-- 
_YEATS LUO_
RD Consultant
Tel: 0910199166
Skype: yeatsluo
Fax:(02)2361-7627