[Galaxy S II Android Development] :
Bug report:

For a while now I've been facing the problem that when i leave my phone connected through wifi, at some point, the mobile data won't function anymore. There are also signs for that, like the toggle 2g option getting greyed out. The logcat attached here is only of the enabling/disabling of mobile data. I can't really sit around and wait till the bug appears:p

05-22 07:27:59.338 D/AndroidRuntime(27248): Calling main entry com.android.commands.am.Am

05-22 07:27:59.338 D/dalvikvm(27248): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods

05-22 07:27:59.410 D/dalvikvm(20662): GC_CONCURRENT freed 504K, 64% free 2770K/7592K, paused 3ms+3ms, total 26ms

05-22 07:27:59.410 D/dalvikvm(20662): WAIT_FOR_CONCURRENT_GC blocked 11ms

05-22 07:27:59.438 D/su (27262): db allowed

05-22 07:27:59.442 D/su (27261): su invoked.

05-22 07:27:59.474 D/AndroidRuntime(27248): Shutting down VM

05-22 07:27:59.482 D/dalvikvm(27248): GC_CONCURRENT freed 93K, 16% free 512K/608K, paused 0ms+4ms, total 9ms

05-22 07:27:59.626 D/su (27267): su invoked.

05-22 07:27:59.638 D/su (27268): db allowed

05-22 07:27:59.774 D/su (27274): db allowed

05-22 07:27:59.806 D/su (27273): su invoked.

05-22 07:27:59.974 V/PhoneStatusBar(16634): setLightsOn(true)

05-22 07:28:00.350 D/AndroidRuntime(27275):

05-22 07:28:00.350 D/AndroidRuntime(27275): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

05-22 07:28:00.350 D/AndroidRuntime(27275): CheckJNI is OFF

05-22 07:28:00.394 D/dalvikvm(27275): Trying to load lib libjavacore.so 0x0

05-22 07:28:00.430 D/dalvikvm(27275): Added shared lib libjavacore.so 0x0

05-22 07:28:00.462 D/dalvikvm(27275): Trying to load lib libnativehelper.so 0x0

05-22 07:28:00.462 D/dalvikvm(27275): Added shared lib libnativehelper.so 0x0

05-22 07:28:00.586 D/dalvikvm( 4655): GC_CONCURRENT freed 1976K, 25% free 20047K/26724K, paused 3ms+37ms, total 529ms

05-22 07:28:00.634 D/AndroidRuntime(27263):

05-22 07:28:00.634 D/AndroidRuntime(27263): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

05-22 07:28:00.634 D/AndroidRuntime(27263): CheckJNI is OFF

05-22 07:28:00.778 D/AndroidRuntime(27275): Calling main entry com.android.commands.am.Am

05-22 07:28:00.778 D/dalvikvm(27275): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods

05-22 07:28:00.830 D/AndroidRuntime(27269):

05-22 07:28:00.830 D/AndroidRuntime(27269): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

05-22 07:28:00.830 D/AndroidRuntime(27269): CheckJNI is OFF

05-22 07:28:00.838 D/dalvikvm(27263): Trying to load lib libjavacore.so 0x0

05-22 07:28:00.850 D/dalvikvm(27269): Trying to load lib libjavacore.so 0x0

05-22 07:28:00.858 D/dalvikvm(27269): Added shared lib libjavacore.so 0x0

05-22 07:28:00.870 D/dalvikvm(27269): Trying to load lib libnativehelper.so 0x0

05-22 07:28:00.870 D/dalvikvm(27269): Added shared lib libnativehelper.so 0x0

05-22 07:28:00.926 D/dalvikvm(20662): GC_CONCURRENT freed 533K, 64% free 2748K/7592K, paused 14ms+2ms, total 86ms

05-22 07:28:00.926 D/dalvikvm(20662): WAIT_FOR_CONCURRENT_GC blocked 37ms

05-22 07:28:01.122 D/dalvikvm(23610): GC_CONCURRENT freed 1814K, 18% free 10778K/13072K, paused 3ms+9ms, total 84ms

05-22 07:28:01.122 D/dalvikvm(23610): WAIT_FOR_CONCURRENT_GC blocked 70ms

05-22 07:28:01.122 D/dalvikvm(23610): WAIT_FOR_CONCURRENT_GC blocked 78ms

05-22 07:28:01.166 D/dalvikvm(27263): Added shared lib libjavacore.so 0x0

05-22 07:28:01.250 D/AndroidRuntime(27275): Shutting down VM

05-22 07:28:01.254 D/dalvikvm(27275): GC_CONCURRENT freed 93K, 16% free 512K/608K, paused 0ms+1ms, total 4ms

05-22 07:28:01.266 D/dalvikvm(27263): Trying to load lib libnativehelper.so 0x0

05-22 07:28:01.266 D/dalvikvm(27263): Added shared lib libnativehelper.so 0x0

05-22 07:28:01.310 D/AndroidRuntime(27269): Calling main entry com.android.commands.am.Am

05-22 07:28:01.310 D/dalvikvm(27269): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods

05-22 07:28:01.402 D/dalvikvm(20662): GC_CONCURRENT freed 514K, 64% free 2746K/7592K, paused 10ms+2ms, total 34ms

05-22 07:28:01.402 D/dalvikvm(20662): WAIT_FOR_CONCURRENT_GC blocked 13ms

05-22 07:28:01.458 D/AndroidRuntime(27269): Shutting down VM

05-22 07:28:01.514 D/dalvikvm(27269): GC_CONCURRENT freed 93K, 16% free 512K/608K, paused 1ms+49ms, total 53ms

05-22 07:28:01.630 D/AndroidRuntime(27263): Calling main entry com.android.commands.am.Am

05-22 07:28:01.634 D/dalvikvm(27263): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods

05-22 07:28:01.702 D/dalvikvm(20662): GC_CONCURRENT freed 516K, 64% free 2742K/7592K, paused 7ms+4ms, total 35ms

05-22 07:28:01.706 D/dalvikvm(20662): WAIT_FOR_CONCURRENT_GC blocked 15ms

05-22 07:28:01.762 D/AndroidRuntime(27263): Shutting down VM

05-22 07:28:01.774 D/dalvikvm(27263): GC_CONCURRENT freed 93K, 16% free 512K/608K, paused 0ms+4ms, total 12ms

05-22 07:28:03.502 D/lights ( 4655): set_light_button on=0

05-22 07:28:06.282 D/lights ( 4655): set_light_button on=1

05-22 07:28:07.298 D/ConnectivityService( 4655): setMobileDataEnabled(false)

05-22 07:28:07.310 W/BackupManagerService( 4655): dataChanged but no participant pkg='com.android.providers.settings' uid=1001

05-22 07:28:08.138 V/PhoneStatusBarView(16634): onAllPanelsCollapsed

05-22 07:28:08.266 V/PhoneStatusBar(16634): setLightsOn(true)

05-22 07:28:08.270 W/InputMethodManagerService( 4655): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@41bd4420 attribute=null, token = android.os.BinderProxy@41f4bec0

05-22 07:28:12.458 D/ConnectivityService( 4655): setMobileDataEnabled(true)

05-22 07:28:12.486 W/BackupManagerService( 4655): dataChanged but no participant pkg='com.android.providers.settings' uid=1001

05-22 07:28:12.690 D/dalvikvm(15778): GC_CONCURRENT freed 398K, 59% free 3173K/7592K, paused 3ms+2ms, total 26ms

05-22 07:28:13.154 V/PhoneStatusBarView(16634): onAllPanelsCollapsed

05-22 07:28:13.258 V/PhoneStatusBar(16634): setLightsOn(true)

05-22 07:28:13.278 W/InputMethodManagerService( 4655): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@41fa0cd8 attribute=null, token = android.os.BinderProxy@41f4bec0

05-22 07:28:18.606 D/su (27335): su invoked.

05-22 07:28:18.614 D/su (27336): db allowed

05-22 07:28:18.778 D/dalvikvm(23610): GC_FOR_ALLOC freed 2092K, 20% free 10574K/13072K, paused 123ms, total 123ms

05-22 07:28:18.786 D/AndroidRuntime(27337):

05-22 07:28:18.786 D/AndroidRuntime(27337): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

05-22 07:28:18.786 D/AndroidRuntime(27337): CheckJNI is OFF

05-22 07:28:18.802 D/dalvikvm(27337): Trying to load lib libjavacore.so 0x0

05-22 07:28:18.810 D/dalvikvm(27337): Added shared lib libjavacore.so 0x0

05-22 07:28:18.818 D/dalvikvm(27337): Trying to load lib libnativehelper.so 0x0

05-22 07:28:18.818 D/dalvikvm(27337): Added shared lib libnativehelper.so 0x0

05-22 07:28:18.858 D/su (27342): su invoked.

i think the problem is that "data changed but no participant pkg" thingie

I can also be wrong and it's a bug that i caused myself :p

But i believe this is similar to what iconrunner is/was facing

EDIT: I should add that rebooting fixes the problem. And also, "data changed but no participant pkg" doesn't show up in the log when disabling/enabling data.