[Samsung Galaxy S II Plus] Tobo27:
Yesterday I had 2 SoD in 4 minutes, it was strange because the first time (9.16am) screen was off but phone kept vibrating on new whatsapp messages, then suddenly the screen turned on and worked for a couple of minutes, then died again and I had to reboot my device(09.20am).

I saved a logcat (you can find it in the attachments) and that's what seems strange to me:

07-10 09:16:12.306 I/ActivityManager( 524): Killing 25700:com.android.systemui/u0a9 (adj -12): background ANR
07-10 09:16:12.396 W/ActivityManager( 524): Scheduling restart of crashed service com.android.systemui/.SystemUIService in 0ms
07-10 09:16:12.486 I/WindowState( 524): WIN DEATH: Window{4238b6b0 u0 StatusBar}
07-10 09:16:12.486 I/StatusBarManagerService( 524): binder died for pkg=com.android.keyguard
07-10 09:16:12.486 W/ActivityManager( 524): Scheduling restart of crashed service com.android.keyguard/.KeyguardService in 0ms
07-10 09:16:12.486 W/WallpaperService( 524): Wallpaper service gone: ComponentInfo{com.android.systemui/com.android.systemui.ImageWallpaper}
07-10 09:16:12.486 W/ActivityManager( 524): Scheduling restart of crashed service com.android.systemui/.ImageWallpaper in 0ms

I'm not an expert but it's like something related to UI crashed so when I tried to wake up the device this happened:

07-10 09:16:12.486 I/PowerManagerService( 524): Waking up from sleep...
07-10 09:16:12.486 W/KeyguardServiceDelegate( 524): onScreenTurnedOn(): no keyguard service!
07-10 09:16:12.486 I/WindowManager( 524): No lock screen! windowToken=null
07-10 09:16:12.486 I/PowerManagerService( 524): Going to sleep by user request...
07-10 09:16:12.486 I/PowerManagerService( 524): Waking up from sleep...
07-10 09:16:12.496 I/WindowState( 524): WIN DEATH: Window{424b3428 u0 com.android.systemui.ImageWallpaper}
07-10 09:16:12.496 I/PowerManagerService( 524): Going to sleep by user request...
07-10 09:16:12.496 I/PowerManagerService( 524): Waking up from sleep...
07-10 09:16:12.506 I/WindowState( 524): WIN DEATH: Window{424751a8 u0 Keyguard}

[...]

07-10 09:16:12.906 W/KeyguardServiceDelegate( 524): onScreenTurnedOn(): no keyguard service!
07-10 09:16:12.906 I/WindowManager( 524): No lock screen! windowToken=null

[...]

07-10 09:17:30.852 W/KeyguardTouchDelegate(26211): dismiss(): NO SERVICE!
07-10 09:17:30.852 V/KeyguardTouchDelegate(26211): Connected to keyguard
07-10 09:17:30.932 E/ActivityThread( 8047): Failed to find provider info for com.sec.badge
07-10 09:17:35.016 I/ActivityManager( 524): START u0 {flg=0x10000000 cmp=jackpal.androidterm/.Term bnds=[0,77][480,172]} from pid -1
07-10 09:17:59.070 I/ActivityManager( 524): START u0 {cmp=com.whatsapp/.Conversations} from pid 8047
07-10 09:18:29.930 I/PowerManagerService( 524): Going to sleep due to screen timeout...
07-10 09:19:01.001 I/PowerManagerService( 524): Waking up from sleep...
07-10 09:19:01.081 I/WindowManager( 524): Lock screen displayed!
07-10 09:19:02.111 W/InputMethodManagerService( 524): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@4221a7d0 attribute=android.view.inputmethod.EditorInfo@4249d1a8, token = android.os.BinderProxy@4233d3b0
07-10 09:19:03.823 I/ActivityManager( 524): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.estrongs.android.pop/.view.FileExplorerActivity} from pid 762
07-10 09:19:03.833 W/BroadcastQueue( 524): Permission Denial: receiving Intent { act=com.android.launcher3.action.LAUNCH flg=0x10 (has extras) } to com.google.android.googlequicksearchbox/com.google.android.search.core.summons.icing.InternalIcingCorporaProvider$ApplicationLaunchReceiver requires com.android.launcher3.permission.RECEIVE_LAUNCH_BROADCASTS due to sender com.cyanogenmod.trebuchet (uid 10017)
07-10 09:19:13.823 W/ActivityManager( 524): Launch timeout has expired, giving up wake lock!
07-10 09:19:13.843 E/WindowManager( 524): Starting window AppWindowToken{426b5e78 token=Token{4205ad90 ActivityRecord{41a08e20 u0 com.estrongs.android.pop/.view.FileExplorerActivity t38}}} timed out
07-10 09:19:33.692 I/PowerManagerService( 524): Going to sleep due to screen timeout...
07-10 09:19:34.263 W/ActivityManager( 524): Activity pause timeout for ActivityRecord{41a08e20 u0 com.estrongs.android.pop/.view.FileExplorerActivity t38}
07-10 09:19:38.757 W/ActivityManager( 524): Sleep timeout! Sleeping now.

I whis I could understand clearly this logs :/

Hope useful :confused: