i have the same problem. here is log:
Starting MBTS...
2021-05-04_11:56:50.487898 <bladerf/1:WARN> Failed to open USB device: USB reset failed - No device found [0x7f4df0001050]
2021-05-04_11:56:50.487997 <gsmtrx:GOON> Failed to create radio interface: failure
ALERT 140350652811072 11:56:50.4 TRXManager.cpp:135:sendCommand: RESET failed with status 2
2021-05-04_11:56:50.488145 <mbts:WARN> TRXManager.cpp:135:sendCommand: RESET failed with status 2
ALERT 140350652811072 11:56:50.4 OpenBTS.cpp:250:main: Failed to reset transceiver
2021-05-04_11:56:50.488177 <mbts:WARN> OpenBTS.cpp:250:main: Failed to reset transceiver
Yate engine is initialized and starting up on sigintos
2021-05-04_11:56:50.510623 <sip:CALL> SIP line 'outbound' logon success to 127.0.0.1:5060
MBTS connected to YBTS
Yate-BTS MBTS Component
Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
Copyright 2010 Kestrel Signal Processing, Inc.
Copyright 2011, 2012, 2013 Range Networks, Inc.
Copyright 2013, 2014 Null Team Impex SRL
Copyright 2014 Legba, Inc.
"OpenBTS" is a registered trademark of Range Networks, Inc.
Contributors:
SC Null Team Impex SRL:
Paul Chitescu
Legba, Inc.
David Burgess
Range Networks, Inc.:
David Burgess, Harvind Samra, Donald Kirker, Doug Brown,
Pat Thompson, Kurtis Heimerl
Kestrel Signal Processing, Inc.:
David Burgess, Harvind Samra, Raffi Sevlian, Roshan Baliga
GNU Radio:
Johnathan Corgan
Others:
Anne Kwong, Jacob Appelbaum, Joshua Lackey, Alon Levy
Alexander Chemeris, Alberto Escudero-Pascual
Incorporated L/GPL libraries and components:
libusb, LGPL 2.1, various copyright holders,
www.libusb.orgIncorporated BSD/MIT-style libraries and components:
A5/1 Pedagogical Implementation, Simplified BSD License,
Copyright 1998-1999 Marc Briceno, Ian Goldberg, and David Wagner
Incorporated public domain libraries and components:
sqlite3, released to public domain 15 Sept 2001,
www.sqlite.orgThis program comes with ABSOLUTELY NO WARRANTY.
Use of this software may be subject to other legal restrictions,
including patent licensing and radio spectrum licensing.
All users of this software are expected to comply with applicable
regulations and laws. See the LEGAL file in the source code for
more information.
Release 5.0.1 formal build date Dec 25 2018 rev
Starting MBTS...
2021-05-04_11:56:57.019435 <bladerf/2:WARN> Failed to open USB device: USB reset failed - No device found [0x7f4df001e6e0]
2021-05-04_11:56:57.019504 <gsmtrx:GOON> Failed to create radio interface: failure
ALERT 139885346678592 11:56:57.0 TRXManager.cpp:135:sendCommand: RESET failed with status 2
2021-05-04_11:56:57.019623 <mbts:WARN> TRXManager.cpp:135:sendCommand: RESET failed with status 2
ALERT 139885346678592 11:56:57.0 OpenBTS.cpp:250:main: Failed to reset transceiver
2021-05-04_11:56:57.019652 <mbts:WARN> OpenBTS.cpp:250:main: Failed to reset transceiver
MBTS connected to YBTS
Yate-BTS MBTS Component
Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
Copyright 2010 Kestrel Signal Processing, Inc.
Copyright 2011, 2012, 2013 Range Networks, Inc.
Copyright 2013, 2014 Null Team Impex SRL
Copyright 2014 Legba, Inc.
"OpenBTS" is a registered trademark of Range Networks, Inc.
Contributors:
SC Null Team Impex SRL:
Paul Chitescu
Legba, Inc.
David Burgess
Range Networks, Inc.:
David Burgess, Harvind Samra, Donald Kirker, Doug Brown,
Pat Thompson, Kurtis Heimerl
Kestrel Signal Processing, Inc.:
David Burgess, Harvind Samra, Raffi Sevlian, Roshan Baliga
GNU Radio:
Johnathan Corgan
Others:
Anne Kwong, Jacob Appelbaum, Joshua Lackey, Alon Levy
Alexander Chemeris, Alberto Escudero-Pascual
Incorporated L/GPL libraries and components:
libusb, LGPL 2.1, various copyright holders,
www.libusb.orgIncorporated BSD/MIT-style libraries and components:
A5/1 Pedagogical Implementation, Simplified BSD License,
Copyright 1998-1999 Marc Briceno, Ian Goldberg, and David Wagner
Incorporated public domain libraries and components:
sqlite3, released to public domain 15 Sept 2001,
www.sqlite.orgThis program comes with ABSOLUTELY NO WARRANTY.
Use of this software may be subject to other legal restrictions,
including patent licensing and radio spectrum licensing.
All users of this software are expected to comply with applicable
regulations and laws. See the LEGAL file in the source code for
more information.
Release 5.0.1 formal build date Dec 25 2018 rev
Starting MBTS...
2021-05-04_11:57:04.016753 <bladerf/3:WARN> Failed to open USB device: USB reset failed - No device found [0x7f4df001e6e0]
2021-05-04_11:57:04.016814 <gsmtrx:GOON> Failed to create radio interface: failure
ALERT 140694801700672 11:57:04.0 TRXManager.cpp:135:sendCommand: RESET failed with status 2
2021-05-04_11:57:04.016900 <mbts:WARN> TRXManager.cpp:135:sendCommand: RESET failed with status 2
ALERT 140694801700672 11:57:04.0 OpenBTS.cpp:250:main: Failed to reset transceiver
2021-05-04_11:57:04.016927 <mbts:WARN> OpenBTS.cpp:250:main: Failed to reset transceiver