[X 2014 Q&A, Help & Troubleshooting] kokotron:
I use a rom based on CM13, the RessurectionRemix 5.7.4. I recently noticed that my NFC doesn't seem to work. It scans nothing, it doesn't work with my nfc-pairing-boombox at home any more, BEAM doesn't work. I suspected the issue is a hardware one, but I can't pinpoint exactly when it started (was it after one of the many tumbles my phone has taken? was after a version update?), and people won't comment on my generic question about the NFC in the official RR (rom) thread. So I share with you my logcat at the moment I enable NFC, filtered only with the entries containing "nfc". I hope someone can make something out of it. Here we go:

10-10 15:56:31.846 I/NfcService(1717): Enabling NFC
10-10 15:56:31.880 E/NfcAdaptation(1717): NfcAdaptation::Initialize: ver=NFCDROID-AOSP_M_00.01 nfa=NFA_PI_1.03.66+
10-10 15:56:31.897 I/BrcmNfcNfa(1717): NFC_TASK started.
10-10 15:56:31.903 E/NfcAdaptation(1717): No HAL module specified in config, falling back to BCM2079x
10-10 15:56:31.904 E/NfcNciHal(1717): HaiInitializeLibrary: ver=NFCDROID-AOSP_M_00.01 nfa=NFA_PI_1.03.66+
10-10 15:56:31.911 I/NfcNciHal(1717): HAL_NfcInitialize (): NFC_HAL_TASK id=0
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_dm_init ()
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_sys_register () id=1, enable_cplt_mask=0x0
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_sys_register () id=3, enable_cplt_mask=0x8
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_rw_init ()
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_sys_register () id=6, enable_cplt_mask=0x48
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_ce_init ()
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_sys_register () id=7, enable_cplt_mask=0xc8
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_ee_init ()
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_sys_register () id=2, enable_cplt_mask=0xcc
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_hci_init ()
10-10 15:56:31.912 I/BrcmNfcNfa(1717): nfa_sys_register () id=8, enable_cplt_mask=0x1cc
10-10 15:56:31.912 I/BrcmNfcNfa(1717): LLCP - llcp_init ()
10-10 15:56:31.912 I/BrcmNfcNfa(1717): num_rx_buff = 9, rx_congest_start = 6, rx_congest_end = 4, max_num_ll_rx_buff = 2
10-10 15:56:31.912 I/BrcmNfcNfa(1717): max_num_tx_buff = 21, max_num_ll_tx_buff = 6
10-10 15:56:31.912 I/BrcmNfcNfa(1717): LLCP_RegisterServer (): SAP:0x1, link_type:0x2, ServiceName:<urn:nfc:sn:sdp>
10-10 15:56:31.913 I/BrcmNfcNfa(1717): LLCP_RegisterServer (): Registered SAP = 0x01
10-10 15:56:31.913 I/BrcmNfcNfa(1717): NFA_Enable ()
10-10 15:56:31.913 I/BrcmNfcNfa(1717): NFA got event 0x0100
10-10 15:56:31.913 I/BrcmNfcNfa(1717): NFA got event 0x0100
10-10 15:56:33.415 E/NfcNciHal(1717): StartPatchDownload Unable to open patchfile /vendor/firmware/bcm20795_firmware.ncd
10-10 15:56:33.429 E/BrcmNfcNfa(1717): NCI version mismatch!!:0x10 != 0x11
10-10 15:56:33.948 D/BrcmNfcJni(1717): RoutingManager::initialize(): try ee register
10-10 15:56:33.948 D/BrcmNfcJni(1717): RoutingManager::nfaEeCallback: NFA_EE_REGISTER_EVT; status=0
10-10 15:56:33.948 D/BrcmNfcJni(1717): nfaEeCallback: NFA_EE_DISCOVER_REQ_EVT; status=0x0; num ee=0
10-10 15:56:33.948 D/BrcmNfcJni(1717): RoutingManager::stackCallback: event=0x15
10-10 15:56:33.949 D/BrcmNfcJni(1717): RoutingManager::stackCallback: NFA_CE_REGISTERED_EVT; status=0x0; h=0x301
10-10 15:56:33.979 E/BrcmNfcJni(1717): nfaConnectionCallback: unknown event ????
10-10 15:56:33.979 D/BrcmNfcJni(1717): RoutingManager::nfaEeCallback: NFA_EE_SET_TECH_CFG_EVT; status=0x0
10-10 15:56:33.980 D/BrcmNfcJni(1717): RoutingManager::nfaEeCallback: NFA_EE_SET_PROTO_CFG_EVT; status=0x0
10-10 15:56:33.980 D/BrcmNfcJni(1717): RoutingManager::commitRouting
10-10 15:56:33.983 D/BrcmNfcJni(1717): RoutingManager::nfaEeCallback: NFA_EE_UPDATED_EVT