[Android Q&A, Help & Troubleshooting] giveen:
I'm posting this here because I am the only developer for my tablet and I cannot solve this wifi issue.

My information has not changed since CM10, where it worked just fine. But for some reason its not working with Android 4.2

https://github.com/giveen/android_device_dell_streak7/tree/cm10.1

/WifiService( 530): setWifiEnabled: true pid=757, uid=1000
D/BluetoothAdapter( 658): 1088952104: getState() : mService = null. Returning STATE_OFF
D/dalvikvm( 530): GC_CONCURRENT freed 798K, 21% free 5425K/6796K, paused 9ms+5ms, total 74ms
D/BluetoothAdapter( 757): 1088293664: getState() : mService = null. Returning STATE_OFF
W/PrintK ( 530): ## wifi_probe
W/PrintK ( 530): wifi_set_power = 1
D/dalvikvm( 757): GC_CONCURRENT freed 371K, 13% free 3895K/4444K, paused 3ms+9ms, total 76ms
W/PrintK ( 530): wifi_set_carddetect = 1
W/PrintK ( 530):
W/PrintK ( 530): Dongle Host Driver, version 4.218.248.31
D/PrintK ( 5): <6>mmc2: new high speed SDIO card at address 0001
W/PrintK ( 5): DHD: dongle ram size is set to 294912(orig 294912)
W/PrintK ( 5): Firmware version = wl0: Feb 11 2011 17:00:41 version 4.218.248.23
W/PrintK ( 5): wl configuration done!
W/PrintK ( 5): wlan0: Broadcom Dongle Host Driver mac=48:5d:60:fa:e5:8d
W/PrintK ( 5): Exited wl_control_wl_start
D/Tethering( 530): sendTetherStateChangedBroadcast 0, 0, 0
E/WifiStateMachine( 530): Failed to reload STA firmware java.lang.IllegalStateException: command '7 softap fwreload wlan0 STA' failed with '400 7 Softap operation failed (No such file or directory)'
D/Tethering( 530): sendTetherStateChangedBroadcast 1, 0, 0
D/Tethering( 530): InitialState.processMessage what=4
D/Tethering( 530): sendTetherStateChangedBroadcast 1, 0, 0
D/CommandListener( 91): Setting iface cfg
D/CommandListener( 91): Trying to bring down wlan0
D/Tethering( 530): InitialState.processMessage what=4
D/Tethering( 530): sendTetherStateChangedBroadcast 0, 0, 0
I/wpa_supplicant( 1433): Successfully initialized wpa_supplicant
W/PrintK ( 1433): Exited wl_control_wl_start
D/Tethering( 530): sendTetherStateChangedBroadcast 1, 0, 0
E/WifiConfigStore( 530): Error parsing configurationjava.io.FileNotFoundException: /data/misc/wifi/ipconfig.txt: open failed: ENOENT (No such file or directory)
D/BluetoothAdapter( 757): 1088293664: getState() : mService = null. Returning STATE_OFF
E/WifiStateMachine( 530): Failed to set frequency band 0
D/BluetoothAdapter( 658): 1088952104: getState() : mService = null. Returning STATE_OFF
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
V/PrintK ( 556): <7>[ASOC-DBG]tegra_dapm_event_int_spk SND_SOC_DAPM_EVENT_ON ? 0
V/PrintK ( 556):
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
V/PrintK ( 0): <7>wlan0: no IPv6 routers present
V/PrintK ( 97): <7>[ASOC-DBG]tegra_dapm_event_int_spk SND_SOC_DAPM_EVENT_ON ? 2
V/PrintK ( 97):
W/ResourceType( 757): getEntry failing because entryIndex 129 is beyond type entryCount 4
D/dalvikvm( 757): GC_CONCURRENT freed 492K, 15% free 3861K/4532K, paused 3ms+11ms, total 46ms
D/PrintK ( 97): <6>wm8903_set_dai_trigger 1
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
D/PrintK ( 97): <6>wm8903_set_dai_trigger 0
W/PrintK ( 64): dog, +tegra_wdt_set_timeout, wdt->timeout=130
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
D/dalvikvm( 725): GC_CONCURRENT freed 196K, 12% free 2812K/3184K, paused 3ms+2ms, total 27ms
D/dalvikvm( 725): GC_CONCURRENT freed 193K, 11% free 3023K/3396K, paused 3ms+3ms, total 28ms
D/NvOsDebugPrintf( 725): NvRmPrivGetChipIdStub: Could not read Tegra chip id/rev
D/NvOsDebugPrintf( 725): Expected on kernels without Tegra3 support, using Tegra2
D/dalvikvm( 725): GC_FOR_ALLOC freed 86K, 12% free 3033K/3432K, paused 20ms, total 20ms
I/dalvikvm-heap( 725): Grow heap (frag case) to 3.756MB for 654928-byte allocation
D/dalvikvm( 725): GC_CONCURRENT freed 3K, 10% free 3669K/4072K, paused 2ms+3ms, total 25ms
D/dalvikvm( 725): WAIT_FOR_CONCURRENT_GC blocked 23ms
D/dalvikvm( 725): GC_FOR_ALLOC freed 175K, 9% free 3792K/4148K, paused 21ms, total 21ms
I/dalvikvm-heap( 725): Grow heap (frag case) to 5.188MB for 1379576-byte allocation
D/dalvikvm( 725): GC_CONCURRENT freed 19K, 7% free 5119K/5496K, paused 2ms+3ms, total 23ms
D/dalvikvm( 725): WAIT_FOR_CONCURRENT_GC blocked 20ms
D/dalvikvm( 725): GC_FOR_ALLOC freed 0K, 7% free 5120K/5496K, paused 19ms, total 19ms
I/dalvikvm-heap( 725): Grow heap (frag case) to 5.950MB for 818656-byte allocation
D/dalvikvm( 725): GC_FOR_ALLOC freed 0K, 6% free 5919K/6296K, paused 20ms, total 20ms
V/PrintK ( 556): <7>[ASOC-DBG]tegra_dapm_event_int_spk SND_SOC_DAPM_EVENT_ON ? 0
V/PrintK ( 556):
V/PrintK ( 97): <7>[ASOC-DBG]tegra_dapm_event_int_spk SND_SOC_DAPM_EVENT_ON ? 2
V/PrintK ( 97):
D/PrintK ( 97): <6>wm8903_set_dai_trigger 1
D/WifiConfigStore( 530): IP config changed SSID = "DeathStar" linkProperties: LinkAddresses: [] Routes: [] DnsAddresses: []
D/WifiConfigStore( 530): proxy changed SSID = "DeathStar"
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
D/CommandListener( 91): Clearing all IP addresses on wlan0
D/ConnectivityService( 530): ConnectivityChange for WIFI: DISCONNECTED/DISCONNECTED
D/ConnectivityService( 530): Attempting to switch to mobile
D/ConnectivityService( 530): Attempting to switch to BLUETOOTH_TETHER
D/dalvikvm( 757): GC_CONCURRENT freed 195K, 10% free 4113K/4532K, paused 3ms+5ms, total 40ms
W/IInputConnectionWrapper( 757): finishComposingText on inactive InputConnection
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
D/dalvikvm( 530): GC_CONCURRENT freed 658K, 21% free 5428K/6796K, paused 14ms+5ms, total 60ms
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
D/Tethering( 530): MasterInitialState.processMessage what=3
D/PrintK ( 97): <6>wm8903_set_dai_trigger 0
I/UpdateCheckReceiver( 1066): Got connectivity change, has connection: false
W/PrintK ( 1433): wl_iw_iscan_set_scan: Scan from SIOCGIWSCAN not supported
W/wpa_supplicant( 1433): wlan0: Failed to initiate AP scan
D/CommandListener( 91): Clearing all IP addresses on wlan0
D/WifiService( 530): setWifiEnabled: false pid=757, uid=1000
D/BluetoothAdapter( 658): 1088952104: getState() : mService = null. Returning STATE_OFF
D/BluetoothAdapter( 757): 1088293664: getState() : mService = null. Returning STATE_OFF
W/PrintK ( 1433): Failed to set 'wpa_auth'iovar
D/PrintK ( 1433): <6>ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
I/wpa_supplicant( 1433): wlan0: CTRL-EVENT-TERMINATING
D/Tethering( 530): InitialState.processMessage what=4
D/Tethering( 530): sendTetherStateChangedBroadcast 0, 0, 0
W/Netd ( 91): No subsystem found in netlink event
D/NetlinkEvent( 91): Unexpected netlink message. type=0x11
W/PrintK ( 530): ## wifi_remove
W/PrintK ( 530): wifi_set_carddetect = 0
W/PrintK ( 530): wifi_set_power = 0
D/PrintK ( 68): <6>mmc2: card 0001 removed
W/PrintK ( 68): [MMC]> host name mmc2, q_wlan_flag: 0