[Sony Xperia S, Acro S, Ion] porcelana:
Error log of Dalvik Debug Monitor

When I start Dalvik Debug Monitor in Android SDK, I see the error log (at phone start), with reports about WiFi. This is shown below, but it is not complete logs, and only a few selected lines:

Log Startup (error)

01-12 15:03:54.409: E/EventHub(369): could not get driver version for /dev/input/mice, Not a typewriter
01-12 15:03:54.759: E/CommandListener(150): Failed to open /proc/sys/net/ipv6/conf/wlan0/disable_ipv6: No such file or directory
01-12 15:03:54.759: E/WifiStateMachine(369): Failed to disable IPv6: java.lang.IllegalStateException: command '1 interface ipv6 wlan0 disable' failed with '400 1 Failed to change IPv6 state (No such file or directory)'
01-12 15:03:54.779: E/MobileDataStateTracker(369): default: Ignoring feature request because could not acquire PhoneService
01-12 15:03:54.779: E/MobileDataStateTracker(369): default: Could not enable APN type "default"
01-12 15:03:54.789: E/WifiHW(150): Failed to open wlan fw path param (No such file or directory)
01-12 15:03:54.789: E/SoftapController(150): Softap fwReload - failed: -1
01-12 15:03:54.789: E/WifiStateMachine(369): Failed to reload STA firmware java.lang.IllegalStateException: command '2 softap fwreload wlan0 STA' failed with '400 2 Softap operation failed (No such file or directory)'
01-12 15:03:54.799: E/WifiStateMachine(369): Unable to change interface settings: java.lang.IllegalStateException: command '4 interface setcfg wlan0 0.0.0.0 0 down' failed with '400 4 Failed to set address (No such device)'
01-12 15:03:54.839: E/wpa_supplicant(585): Could not read interface wlan0 flags: No such device
01-12 15:03:54.889: E/AudioHardwareMSM8660(156): unknown stream
01-12 15:03:54.939: E/wpa_supplicant(585): Could not read interface wlan0 flags: No such device
01-12 15:03:55.419: E/SQLiteLog(369): (5) statement aborts at 1: [PRAGMA journal_mode=TRUNCATE;]
01-12 15:03:55.449: E/wpa_supplicant(585): Could not read interface wlan0 flags: No such device
01-12 15:03:55.549: E/wpa_supplicant(585): Could not read interface wlan0 flags: No such device
01-12 15:03:55.559: E/Trace(610): error opening trace file: No such file or directory (2)
01-12 15:03:55.649: E/wpa_supplicant(585): Could not read interface wlan0 flags: No such device
01-12 15:03:55.859: E/wpa_supplicant(585): nl80211: Could not set interface 'wlan0' UP
01-12 15:03:55.859: E/wpa_supplicant(585): wlan0: Failed to initialize driver interface
01-12 15:03:56.189: E/Trace(664): error opening trace file: No such file or directory (2)
01-12 15:03:57.629: E/SocketMonitor(735): The socket server maybe not started.
01-12 15:03:57.629: E/SocketMonitor(735): Error in SocketMonitor.
01-12 15:04:05.919: E/WifiHW(369): Supplicant not running, cannot connect
01-12 15:04:05.959: E/(156): [ACDB RTC]->rtc init done!->result [0]
01-12 15:04:05.959: E/Diag_Lib(156): actp_diag_init: call diag init function with 418A0959
01-12 15:04:05.959: E/(156): [ACDB ACPH]->actp diag init done!
01-12 15:04:05.959: E/ACDB-LOADER(156): Error reading MBHC general config returned = fffffff3
01-12 15:04:06.929: E/WifiHW(369): Supplicant not running, cannot connect
01-12 15:04:09.929: E/WifiStateMachine(369): Failed to setup control channel, restart supplicant
01-12 15:04:12.629: E/SocketMonitor(735): The socket server maybe not started.
01-12 15:04:12.629: E/SocketMonitor(735): Error in SocketMonitor.
01-12 15:04:12.839: E/Trace(2073): error opening trace file: No such file or directory (2)
01-12 15:04:13.189: E/MM_OSAL(156): ValidateAACFile failed
01-12 15:04:13.249: E/Trace(2131): error opening trace file: No such file or directory (2)
01-12 15:04:14.779: E/MM_OSAL(156): ValidateAACFile failed
01-12 15:04:14.799: E/Trace(2250): error opening trace file: No such file or directory (2)
01-12 15:04:14.939: E/WifiHW(150): Failed to open wlan fw path param (No such file or directory)
01-12 15:04:14.939: E/SoftapController(150): Softap fwReload - failed: -1
01-12 15:04:14.939: E/WifiStateMachine(369): Failed to reload STA firmware java.lang.IllegalStateException: command '8 softap fwreload wlan0 STA' failed with '400 8 Softap operation failed (No such file or directory)'
01-12 15:04:14.949: E/WifiStateMachine(369): Unable to change interface settings: java.lang.IllegalStateException: command '10 interface setcfg wlan0 0.0.0.0 0 down' failed with '400 10 Failed to set address (No such device)'
01-12 15:04:14.959: E/WifiHW(369): Unable to open connection to supplicant on "wlan0": No such file or directory
01-12 15:04:14.979: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.019: E/Trace(2299): error opening trace file: No such file or directory (2)
01-12 15:04:15.079: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.159: E/Trace(2319): error opening trace file: No such file or directory (2)
01-12 15:04:15.189: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.189: E/(2262): vnd.android.cursor.dir/event
01-12 15:04:15.289: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.309: E/ThermalDaemon(1152): Fusion modem thermal mitigation not available.
01-12 15:04:15.309: E/ThermalDaemon(1152): Sensor setup:[tsens_tz_sensor0]
01-12 15:04:15.389: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.399: E/Trace(2348): error opening trace file: No such file or directory (2)
01-12 15:04:15.499: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.569: E/Trace(2379): error opening trace file: No such file or directory (2)
01-12 15:04:15.609: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.849: E/Trace(2400): error opening trace file: No such file or directory (2)
01-12 15:04:15.919: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:15.989: E/Trace(2421): error opening trace file: No such file or directory (2)
01-12 15:04:16.019: E/wpa_supplicant(2295): Could not read interface wlan0 flags: No such device
01-12 15:04:16.019: E/wpa_supplicant(2295): nl80211: Could not set interface 'wlan0' UP
01-12 15:04:16.019: E/wpa_supplicant(2295): wlan0: Failed to initialize driver interface
01-12 15:04:16.069: E/Trace(2438): error opening trace file: No such file or directory (2)
01-12 15:04:17.239: E/MM_OSAL(156): ValidateAACFile failed
01-12 15:04:17.319: E/Trace(2509): error opening trace file: No such file or directory (2)
01-12 15:04:17.509: E/Trace(2523): error opening trace file: No such file or directory (2)
01-12 15:04:17.629: E/ThermalDaemon(1152): Thermald Server: accept[fd=31]
01-12 15:04:17.629: E/ThermalDaemon(1152): Thermald Server: write success [data=600][0x58 0x02]
01-12 15:04:17.639: E/Trace(2543): error opening trace file: No such file or directory (2)
01-12 15:04:17.819: E/SQLiteLog(2523): (5) statement aborts at 1: [PRAGMA journal_mode=TRUNCATE;]
01-12 15:04:18.119: E/Trace(2606): error opening trace file: No such file or directory (2)
01-12 15:04:26.969: E/WifiHW(369): Supplicant not running, cannot connect
01-12 15:04:29.779: E/Trace(2847): error opening trace file: No such file or directory (2)
01-12 15:04:29.969: E/WifiHW(369): Supplicant not running, cannot connect
01-12 15:04:29.969: E/WifiStateMachine(369): Failed to setup control channel, restart supplicant
01-12 15:04:34.979: E/WifiHW(150): Failed to open wlan fw path param (No such file or directory)
01-12 15:04:34.979: E/SoftapController(150): Softap fwReload - failed: -1
01-12 15:04:34.989: E/WifiStateMachine(369): Failed to reload STA firmware java.lang.IllegalStateException: command '11 softap fwreload wlan0 STA' failed with '400 11 Softap operation failed (No such file or directory)'
01-12 15:04:35.089: E/WifiStateMachine(369): Unable to change interface settings: java.lang.IllegalStateException: command '13 interface setcfg wlan0 0.0.0.0 0 down' failed with '400 13 Failed to set address (No such device)'
01-12 15:04:35.159: E/wpa_supplicant(2894): Could not read interface wlan0 flags: No such device
01-12 15:04:36.169: E/wpa_supplicant(2894): nl80211: Could not set interface 'wlan0' UP
01-12 15:04:36.169: E/wpa_supplicant(2894): wlan0: Failed to initialize driver interface
01-12 15:04:46.109: E/WifiHW(369): Supplicant not running, cannot connect
01-12 15:04:50.110: E/WifiStateMachine(369): Failed to setup control channel, restart supplicant
01-12 15:04:55.120: E/WifiHW(150): Failed to open wlan fw path param (No such file or directory)
01-12 15:04:55.120: E/SoftapController(150): Softap fwReload - failed: -1
01-12 15:04:55.130: E/WifiStateMachine(369): Failed to reload STA firmware java.lang.IllegalStateException: command '14 softap fwreload wlan0 STA' failed with '400 14 Softap operation failed (No such file or directory)'
01-12 15:04:55.150: E/WifiStateMachine(369): Unable to change interface settings: java.lang.IllegalStateException: command '16 interface setcfg wlan0 0.0.0.0 0 down' failed with '400 16 Failed to set address (No such device)'
01-12 15:04:55.160: E/WifiHW(369): Unable to open connection to supplicant on "wlan0": No such file or directory
01-12 15:04:55.189: E/wpa_supplicant(2948): Could not read interface wlan0 flags: No such device
01-12 15:04:56.189: E/wpa_supplicant(2948): nl80211: Could not set interface 'wlan0' UP
01-12 15:04:56.189: E/wpa_supplicant(2948): wlan0: Failed to initialize driver interface
01-12 15:05:07.179: E/WifiHW(369): Supplicant not running, cannot connect
01-12 15:05:10.180: E/WifiStateMachine(369): Failed to setup control channel, restart supplicant

Run logcat:

E/WifiHW ( 369): Unable to open connection to supplicant on "wlan0": No such file or directory
I/wpa_supplicant( 3043): rfkill: Cannot open RFKILL control device
E/wpa_supplicant( 3043): Could not read interface wlan0 flags: No such device
E/wpa_supplicant( 3043): nl80211: Could not set interface 'wlan0' UP
E/wpa_supplicant( 3043): wlan0: Failed to initialize driver interface
E/WifiHW ( 369): Supplicant not running, cannot connect
D/StateMachine( 369): handleMessage: E msg.what=147458
D/StateMachine( 369): processMsg: SupplicantStartingState
D/WifiStateMachine( 369): SupplicantStartingState{ what=147458 when=-3ms }
E/WifiStateMachine( 369): Failed 6 times to start supplicant, unload driver