I've built OpenBTS on an Ubuntu 12.04 machine (old Lenovo T60 laptop) and I can't get the service to start properly.

I always see some transceiver.cpp errors - I've linked Transceiver52m/transceiver to my ./apps/ directory. This is start-up detail:

Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
Copyright 2010 Kestrel Signal Processing, Inc.
Copyright 2011, 2012, 2013, 2014 Range Networks, Inc.
Release 5.0.0-prealpha+a5473eedf1 CommonLibs:3ad343b97b P formal build date 2014-07-30T08:49:27
"OpenBTS" is a registered trademark of Range Networks, Inc.

  Range Networks, Inc.:
    David Burgess, Harvind Samra, Donald Kirker, Doug Brown,
    Pat Thompson, Kurtis Heimerl, Michael Iedema, Dave Gotwisner
  Kestrel Signal Processing, Inc.:
    David Burgess, Harvind Samra, Raffi Sevlian, Roshan Baliga
  GNU Radio:
    Johnathan Corgan
    Anne Kwong, Jacob Appelbaum, Joshua Lackey, Alon Levy
    Alexander Chemeris, Alberto Escudero-Pascual
Incorporated L/GPL libraries and components:
  libortp, LGPL, 2.1 Copyright 2001 Simon MORLAT simon.morlat@linphone.org
  libusb, LGPL 2.1, various copyright holders, www.libusb.org
  libzmq, LGPL 3:
      Copyright (c) 2009-2011 250bpm s.r.o.
      Copyright (c) 2011 Botond Ballo
      Copyright (c) 2007-2009 iMatix Corporation
Incorporated BSD/MIT-style libraries and components:
  A5/1 Pedagogical Implementation, Simplified BSD License, Copyright 1998-1999 Marc Briceno, Ian Goldberg, and David Wagner
  JsonBox, Copyright 2011 Anhero Inc.
  Google Core Dumper, BSD 3-Clause License, Copyright (c) 2005-2007, Google Inc.
Incorporated public domain libraries and components:
  sqlite3, released to public domain 15 Sept 2001, www.sqlite.org

This 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.

Note to US Government Users:
 The OpenBTS software applications and associated documentation are "Commercial
 Item(s)," as that term is defined at 48 C.F.R. Section 2.101, consisting of
 "Commercial Computer Software" and "Commercial Computer Software Documentation,"
 as such terms are used in 48 C.F.R. 12.212 or 48 C.F.R. 227.7202, as
 applicable. Consistent with 48 C.F.R. 12.212 or 48 C.F.R. Sections 227.7202-1
 through 227.7202-4, as applicable, the Commercial Computer Software and
 Commercial Computer Software Documentation are being licensed to U.S. Government
 end users (a) only as Commercial Items and (b) with only those rights as are
 granted to all other end users pursuant to the terms and conditions of
 Range Networks' software licenses and master customer agreement.

1406763106.876470 3072763648:
Starting the system...
ALERT 3278:3285 2014-07-30T16:31:51.9 OpenBTS.cpp:174:startTransceiver: starting transceiver ./transceiver with 1 ARFCNs
linux; GNU C++ version 4.6.3; Boost_105400; UHD_003.007.002-49-g9eb403f4

Using internal clock reference
-- Loading firmware image: /usr/local/share/uhd/images/usrp_b200_fw.hex... done
-- Loading FPGA image: /usr/local/share/uhd/images/usrp_b210_fpga.bin... 10%ALERT 3278:3278 2014-07-30T16:32:06.9 TRXManager.cpp:402:tune: RXTUNE(128) failed with status -1
 18%EMERG 3278:3317 2014-07-30T16:32:11.9 TRXManager.cpp:107:clockHandler: TRX clock interface timed out, assuming TRX is dead.
root@dlake-ThinkPad-T60:~/openbts/ap done
-- Operating over USB 2.
-- Detecting internal GPSDO.... No GPSDO found
-- not found
-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 32.000000 MHz
-- Actually got clock rate 32.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Asking for clock rate 26.000000 MHz
-- Actually got clock rate 26.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass

Thanks in advance