[Defy Q&A, Help & Troubleshooting] toartoar:
Same problem here

Same problem here. Three hours ago, data connection over the mobile network did work perfectly well, now it does not connect at all any longer. I tried wiping the dalvik cache, setting different basebands (even though everything was working fine with central Europe setting before), trying several restarts and manually turning on and off data connection some times. The problem first occurred driving in a car so maybe it has something to do with switching mobile network cells too fast or something?

My system:

Defy+, CM10 from 121024, central Europe, data connection over WIFI working perfectly fine.

Any suggestions? What else could I possibly try?

Looking into the phone logs when toggling data connection, I only see

10-25 20:33:05.976: D/ConnectivityService(2549): setMobileDataEnabled(false) respectively true..

Interstingly, sometimes the icon in the task bar (the swipe down menu -> is it called like that??) shows disabled data connection and when I click it (to enable), it is displayed enabled but the trace says "setMobileDataEnabled(false)". But that probably is a problem of Google, not of CM10, would be my guess.

And when disabling a working WIFI-connection, these traces show up:

10-25 20:41:31.016: D/WifiService(2549): setWifiEnabled: false pid=3143, uid=1000

10-25 20:41:31.023: E/wpa_supplicant(3812): ERROR - wpa_driver_tista_private_send - error sending Wext private IOCTL to STA driver (ioctl_cmd = 8001201, res = -1, errno = 95)

10-25 20:41:31.023: E/wpa_supplicant(3812): ERROR - Failed to enable BtCoe

10-25 20:41:31.039: D/CommandListener(2196): Clearing all IP addresses on tiwlan0

10-25 20:41:31.070: D/ConnectivityService(2549): ConnectivityChange for WIFI: DISCONNECTED/DISCONNECTED

10-25 20:41:31.070: I/wpa_supplicant(3812): CTRL-EVENT-TERMINATING - signal 0 received

10-25 20:41:31.070: I/wpa_supplicant(3812): CTRL-EVENT-STATE-CHANGE id=0 state=0 BSSID=00:00:00:00:00:00 SSID=chaos

10-25 20:41:31.117: D/ConnectivityService(2549): Attempting to switch to mobile

10-25 20:41:31.117: D/ConnectivityService(2549): Attempting to switch to BLUETOOTH_TETHER

10-25 20:41:31.125: D/NetUtils(2549): android_net_utils_resetConnections in env=0x4bc17d60 clazz=0x5cd00001 iface=tiwlan0 mask=0x3

10-25 20:41:31.125: D/ConnectivityService(2549): resetConnections(tiwlan0, 3)

10-25 20:41:31.156: D/ConnectivityService(2549): ConnectivityChange for WIFI: DISCONNECTED/DISCONNECTED

10-25 20:41:31.164: D/ConnectivityService(2549): Attempting to switch to mobile

10-25 20:41:31.164: D/ConnectivityService(2549): Attempting to switch to BLUETOOTH_TETHER

10-25 20:41:31.164: D/NetUtils(2549): android_net_utils_resetConnections in env=0x4bc17d60 clazz=0x5f500001 iface=tiwlan0 mask=0x3

10-25 20:41:31.164: D/ConnectivityService(2549): resetConnections(tiwlan0, 3)

10-25 20:41:31.430: W/Netd(2196): No subsystem found in netlink event

10-25 20:41:31.430: D/NetlinkEvent(2196): Unexpected netlink message. type=0x11

10-25 20:41:34.172: D/Tethering(2549): MasterInitialState.processMessage what=3

10-25 20:41:34.203: D/Tethering(2549): MasterInitialState.processMessage what=3

10-25 20:41:34.258: D/ConnectivityService(2549): handleInetConditionChange: no active default network - ignore

10-25 20:41:34.320: I/k9(3464): AutoSync help is available, autoSync = false

10-25 20:41:34.336: D/k9(3464): CoreService[com.fsck.k9.service.MailService] - autoshutdown - stopSelf mAutoShutdown=true mImmediateShutdown=true startId=1

10-25 20:41:34.336: D/k9(3464): CoreService[com.fsck.k9.service.MailService] - scheduling async autoshutdown

10-25 20:41:34.477: D/dalvikvm(2549): GC_EXPLICIT freed 637K, 33% free 7694K/11348K, paused 5ms+7ms, total 95ms

mImmediateShutdown=true startId=1

10-25 20:41:34.664: I/ActivityManager(2549): No longer want com.keramidas.TitaniumBackup (pid 3567): hidden #16

10-25 20:41:34.695: W/Smack/Packet(2848): notify conn break (IOEx), close connection

10-25 20:41:34.703: E/GTalkService(2848): connectionClosed: no XMPPConnection - That's strange!

10-25 20:41:34.703: D/ConnectivityService(2549): handleInetConditionChange: no active default network - ignore

10-25 20:42:31.024: D/ConnectivityService(2549): NetTransition Wakelock for WifiStateMachine released by timeout

Looks like the phone desperately tries to connect to something but fails gloriously :). Remains the question: why? And why was everything working perfectly fine until today? Any help appreciated!