pi@raspberrypi ~ $ echo "tx 4f 82 13 00" | cec-client -s
opening a connection to the CEC adapter...
DEBUG:   [             140]     Broadcast (F): osd name set to 'Broadcast'
DEBUG:   [             142]     InitHostCEC - vchiq_initialise succeeded
DEBUG:   [             144]     InitHostCEC - vchi_initialise succeeded
DEBUG:   [             145]     InitHostCEC - vchi_connect succeeded
DEBUG:   [             148]     logical address changed to Free use (e)
DEBUG:   [             150]     Open - vc_cec initialised
NOTICE:  [             151]     connection opened
DEBUG:   [             154]     << Broadcast (F) -> TV (0): POLL
DEBUG:   [             154]     initiator 'Broadcast' is not supported by the CEC adapter. using 'Free use' instead
TRAFFIC: [             154]     << e0
DEBUG:   [             161]     processor thread started
DEBUG:   [             246]     initiator 'Broadcast' is not supported by the CEC adapter. using 'Free use' instead
TRAFFIC: [             246]     << e0
DEBUG:   [             337]     >> POLL not sent
DEBUG:   [             337]     TV (0): device status changed into 'not present'
NOTICE:  [             337]     registering new CEC client - v3.0.1
DEBUG:   [             338]     detecting logical address for type 'recording device'
DEBUG:   [             338]     trying logical address 'Recorder 1'
DEBUG:   [             338]     << Recorder 1 (1) -> Recorder 1 (1): POLL
TRAFFIC: [             338]     << 11
TRAFFIC: [             609]     << 11
DEBUG:   [             881]     >> POLL not sent
DEBUG:   [             881]     using logical address 'Recorder 1'
DEBUG:   [             882]     Recorder 1 (1): device status changed into 'handled by libCEC'
DEBUG:   [             882]     Recorder 1 (1): power status changed from 'unknown' to 'on'
DEBUG:   [             882]     Recorder 1 (1): vendor = Pulse Eight (001582)
DEBUG:   [             882]     Recorder 1 (1): CEC version 1.4
DEBUG:   [             882]     AllocateLogicalAddresses - device '0', type 'recording device', LA '1'
DEBUG:   [             885]     logical address changed to Recorder 1 (1)
DEBUG:   [             899]     Recorder 1 (1): osd name set to 'CECTester'
DEBUG:   [             899]     Recorder 1 (1): menu language set to 'eng'
DEBUG:   [             905]     GetPhysicalAddress - physical address = 0000
NOTICE:  [             905]     setting HDMI port to 1 on device TV (0)
DEBUG:   [             905]     << Recorder 1 (1) -> TV (0): POLL
TRAFFIC: [             906]     << 10
TRAFFIC: [             996]     << 10
DEBUG:   [            1087]     >> POLL not sent
DEBUG:   [            1087]     Recorder 1 (1): physical address changed from ffff to 1000
DEBUG:   [            1088]     << Recorder 1 (1) -> broadcast (F): physical adddress 1000
TRAFFIC: [            1088]     << 1f:84:10:00:01
NOTICE:  [            1240]     CEC client registered: libCEC version = 3.0.1, client version = 3.0.1, firmware version = 1, logical address(es) = Recorder 1 (1) , base device: TV (0), HDMI port number: 1, physical address: 1.0.0.0, git revision: <unknown>, compiled on Wed 25 Nov 00:01:33 UTC 2015 by pi@raspberrypi on Linux 4.1.9+ (armv6l), features: P8_USB, P8_detect, randr, 'RPi'
DEBUG:   [            1240]     << Recorder 1 (1) -> TV (0): OSD name 'CECTester'
DEBUG:   [            1240]     << Recorder 1 (1) -> TV (0): POLL
TRAFFIC: [            1241]     << 10
TRAFFIC: [            1331]     << 10
DEBUG:   [            1422]     >> POLL not sent
DEBUG:   [            1424]     not sending command 'set osd name': destination device 'TV' marked as not present
DEBUG:   [            1424]     << requesting power status of 'TV' (0)
DEBUG:   [            1424]     << Recorder 1 (1) -> TV (0): POLL
TRAFFIC: [            1424]     << 10
TRAFFIC: [            1515]     << 10
DEBUG:   [            1606]     >> POLL not sent
DEBUG:   [            1606]     not sending command 'give device power status': destination device 'TV' marked as not present
TRAFFIC: [            1607]     << 4f
DEBUG:   [            1638]     unregistering all CEC clients
NOTICE:  [            1641]     unregistering client: libCEC version = 3.0.1, client version = 3.0.1, firmware version = 1, logical address(es) = Recorder 1 (1) , base device: TV (0), HDMI port number: 1, physical address: 1.0.0.0, git revision: <unknown>, compiled on Wed 25 Nov 00:01:33 UTC 2015 by pi@raspberrypi on Linux 4.1.9+ (armv6l), features: P8_USB, P8_detect, randr, 'RPi'
DEBUG:   [            1644]     Recorder 1 (1): power status changed from 'on' to 'unknown'
DEBUG:   [            1645]     Recorder 1 (1): vendor = Unknown (000000)
DEBUG:   [            1647]     Recorder 1 (1): CEC version unknown
DEBUG:   [            1648]     Recorder 1 (1): osd name set to 'Recorder 1'
DEBUG:   [            1650]     Recorder 1 (1): device status changed into 'unknown'
DEBUG:   [            1651]     unregistering all CEC clients
DEBUG:   [            2165]     UnregisterLogicalAddress - releasing previous logical address
DEBUG:   [            2166]     logical address changed to Broadcast (f)