[Nexus 7 Q&A, Help & Troubleshooting] tigrey:
Basically, I'd just managed to get this tablet to pick up my dmzmusic a2dp adapter, then I went to sleep and turned off Bluetooth.

I rebooted it in the morning because,hey, why not.

I open up quick settings and toggle Bluetooth on.. and it doesn't turn on. It doesn't even search for devices, nothing's connected to it as Bluetooth doesn't turn on.

I leaves it for a while and get the same result..

Then I take a logcat using play store app catlog and come crying for help like a baby. Is there anyone who can help me? :)

build.board: grouper
build.bootloader: 3.41
build.brand: Google
build.cpu_abi: armeabi-v7a
build.cpu_abi2: armeabi
build.device: grouper
build.display: pa_grouper-userdebug 4.2.2 JDQ39 eng.aaronpoweruser.20130325.010739 test-keys
build.fingerprint: google/nakasi/grouper:4.2/JOP40C/527662:user/release-keys
build.hardware: grouper
build.host: build1
build.id: JDQ39
build.manufacturer: Asus
build.model: Nexus 7
build.product: nakasi
build.radio: unknown
build.serial: 015d32201437f207
build.tags: test-keys
build.time: 1364173682000
build.type: userdebug
build.user: aaronpoweruser
version.codename: REL
version.incremental: eng.aaronpoweruser.20130325.010739
version.release: 4.2.2
version.sdk_int: 17

04-05 14:54:29.304 D/dalvikvm(6145): Trying to load lib libjavacore.so 0x0
04-05 14:54:29.314 D/dalvikvm(6145): Added shared lib libjavacore.so 0x0
04-05 14:54:29.334 D/dalvikvm(6145): Trying to load lib libnativehelper.so 0x0
04-05 14:54:29.334 D/dalvikvm(6145): Added shared lib libnativehelper.so 0x0
04-05 14:54:29.474 D/AndroidRuntime(6151):
04-05 14:54:29.474 D/AndroidRuntime(6151): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
04-05 14:54:29.474 D/AndroidRuntime(6151): CheckJNI is OFF
04-05 14:54:29.484 D/dalvikvm(6151): Trying to load lib libjavacore.so 0x0
04-05 14:54:29.494 D/dalvikvm(6151): Added shared lib libjavacore.so 0x0
04-05 14:54:29.494 D/dalvikvm(6151): Trying to load lib libnativehelper.so 0x0
04-05 14:54:29.494 D/dalvikvm(6151): Added shared lib libnativehelper.so 0x0
04-05 14:54:29.524 D/AndroidRuntime(6145): Calling main entry com.android.commands.am.Am
04-05 14:54:29.524 D/dalvikvm(6145): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods
04-05 14:54:29.794 D/AndroidRuntime(6164):
04-05 14:54:29.794 D/AndroidRuntime(6164): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
04-05 14:54:29.794 D/AndroidRuntime(6164): CheckJNI is OFF
04-05 14:54:29.864 D/dalvikvm(6164): Trying to load lib libjavacore.so 0x0
04-05 14:54:29.864 D/AndroidRuntime(6179):
04-05 14:54:29.864 D/AndroidRuntime(6179): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
04-05 14:54:29.864 D/AndroidRuntime(6179): CheckJNI is OFF
04-05 14:54:29.864 D/dalvikvm(6164): Added shared lib libjavacore.so 0x0
04-05 14:54:29.894 D/dalvikvm(6179): Trying to load lib libjavacore.so 0x0
04-05 14:54:29.904 D/dalvikvm(6179): Added shared lib libjavacore.so 0x0
04-05 14:54:29.914 D/dalvikvm(6179): Trying to load lib libnativehelper.so 0x0
04-05 14:54:29.914 D/dalvikvm(6179): Added shared lib libnativehelper.so 0x0
04-05 14:54:29.984 V/PhoneStatusBar(606): setLightsOn(true)
04-05 14:54:30.084 D/dalvikvm(6164): Trying to load lib libnativehelper.so 0x0
04-05 14:54:30.084 D/dalvikvm(6164): Added shared lib libnativehelper.so 0x0
04-05 14:54:30.144 D/AndroidRuntime(6151): Calling main entry com.android.commands.am.Am
04-05 14:54:30.154 D/dalvikvm(6151): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods
04-05 14:54:30.204 D/AndroidRuntime(6145): Shutting down VM
04-05 14:54:30.344 D/AndroidRuntime(6179): Calling main entry com.android.commands.am.Am
04-05 14:54:30.344 D/dalvikvm(6179): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods
04-05 14:54:30.374 W/IInputConnectionWrapper(5796): beginBatchEdit on inactive InputConnection
04-05 14:54:30.374 W/IInputConnectionWrapper(5796): endBatchEdit on inactive InputConnection
04-05 14:54:30.384 D/AndroidRuntime(6164): Calling main entry com.android.commands.am.Am
04-05 14:54:30.384 D/dalvikvm(6164): Note: class Landroid/app/ActivityManagerNative; has 157 unimplemented (abstract) methods
04-05 14:54:30.454 D/AndroidRuntime(6151): Shutting down VM
04-05 14:54:30.564 D/AndroidRuntime(6179): Shutting down VM
04-05 14:54:30.644 D/AndroidRuntime(6164): Shutting down VM
04-05 14:54:30.834 D/TypingSpeedManager(717): month = 3, day = 5
04-05 14:54:35.474 I/ActivityManager(483): START u0 {act=android.settings.SETTINGS flg=0x14000000 cmp=com.android.settings/.Settings} from pid 606
04-05 14:54:35.674 I/dalvikvm-heap(483): Grow heap (frag case) to 21.133MB for 1048592-byte allocation
04-05 14:54:35.864 V/PhoneStatusBar(606): setLightsOn(true)
04-05 14:54:35.904 W/WindowManager(483): Rebuild removed 11 windows but added 10
04-05 14:54:35.914 W/WindowManager(483): This window was lost: Window{41120128 u0 Please wait EXITING}
04-05 14:54:35.914 W/WindowManager(483): mDisplayId=0 mSession=Session{411f9310 5796:u0a10139} mClient=android.os.BinderProxy@416f2be0
04-05 14:54:35.914 W/WindowManager(483): mOwnerUid=10139 mShowToOwnerOnly=true
04-05 14:54:35.914 W/WindowManager(483): mAttrs=WM.LayoutParams{(0,0)(wrapxwrap) gr=#11 sim=#120 ty=2 fl=#8020002 pfl=0x8 fmt=-2 wanim=0x1030002}
04-05 14:54:35.914 W/WindowManager(483): Requested w=301 h=225 mLayoutSeq=1586
04-05 14:54:35.914 W/WindowManager(483): mBaseLayer=21000 mSubLayer=0 mAnimLayer=21060+0=21060 mLastLayer=21065
04-05 14:54:35.914 W/WindowManager(483): mToken=AppWindowToken{418e2058 token=Token{41782560 ActivityRecord{41108ab0 u0 com.nolanlawson.logcat/.ShowRecordLogDialogActivity}}}
04-05 14:54:35.914 W/WindowManager(483): mRootToken=AppWindowToken{418e2058 token=Token{41782560 ActivityRecord{41108ab0 u0 com.nolanlawson.logcat/.ShowRecordLogDialogActivity}}}
04-05 14:54:35.914 W/WindowManager(483): mAppToken=AppWindowToken{418e2058 token=Token{41782560 ActivityRecord{41108ab0 u0 com.nolanlawson.logcat/.ShowRecordLogDialogActivity}}}
04-05 14:54:35.914 W/WindowManager(483): mViewVisibility=0x0 mHaveFrame=true mObscured=false
04-05 14:54:35.914 W/WindowManager(483): mSeq=0 mSystemUiVisibility=0x0
04-05 14:54:35.914 W/WindowManager(483): mGivenContentInsets=[0,0][0,0] mGivenVisibleInsets=[0,0][0,0]
04-05 14:54:35.914 W/WindowManager(483): mConfiguration={1.0 ?mcc?mnc en_GB ldltr sw600dp w600dp h880dp 213dpi lrg port finger -keyb/v/h -nav/h s.9 themeResource=null}
04-05 14:54:35.914 W/WindowManager(483): mHasSurface=true mShownFrame=[249.0,506.0][550.0,731.0] isReadyForDisplay()=false
04-05 14:54:35.914 W/WindowManager(483): mFrame=[249,506][550,731] last=[249,506][550,731]
04-05 14:54:35.914 W/WindowManager(483): mSystemDecorRect=[0,0][301,225] last=[0,0][301,225]
04-05 14:54:35.914 W/WindowManager(483): Frames: containing=[0,33][800,1205] parent=[0,33][800,1205] display=[0,33][800,1205]
04-05 14:54:35.914 W/WindowManager(483): content=[249,506][550,731] visible=[249,506][550,731]
04-05 14:54:35.914 W/WindowManager(483): Cur insets: content=[0,0][0,0] visible=[0,0][0,0]
04-05 14:54:35.914 W/WindowManager(483): Lst insets: content=[0,0][0,0] visible=[0,0][0,0]
04-05 14:54:35.914 W/WindowManager(483): WindowStateAnimator{416d0d20 Please wait}:
04-05 14:54:35.914 W/WindowManager(483): mAnimating=false mLocalAnimating=false mAnimationIsEntrance=true mAnimation=null
04-05 14:54:35.914 W/WindowManager(483): mSurface=Surface(name=Please wait, identity=317)
04-05 14:54:35.914 W/WindowManager(483): mDrawState=HAS_DRAWN mLastHidden=true
04-05 14:54:35.914 W/WindowManager(483): Surface: shown=false layer=21065 alpha=1.0 rect=(249.0,506.0) 301.0 x 225.0
04-05 14:54:35.914 W/WindowManager(483): mExiting=true mRemoveOnExit=true mDestroying=false mRemoved=false
04-05 14:54:35.914 W/WindowManager(483): Current app token list:
04-05 14:54:35.914 V/WindowManager(483): #8: Token{4192b0e0 ActivityRecord{4172b268 u0 com.android.settings/.Settings}}
04-05 14:54:35.914 V/WindowManager(483): #7: Token{41250c60 ActivityRecord{41250b20 u0 com.nolanlawson.logcat/.LogcatActivity}}
04-05 14:54:35.914 V/WindowManager(483): #6: Token{416291b8 ActivityRecord{4110f2c0 u0 com.teslacoilsw.launcher/com.android.launcher2.Launcher}}
04-05 14:54:35.914 V/WindowManager(483): #5: Token{41896ed8 ActivityRecord{4123c6f0 u0 com.android.systemui/.recent.RecentsActivity}}
04-05 14:54:35.914 V/WindowManager(483): #4: Token{41aacd18 ActivityRecord{410f6b58 u0 com.android.vending/com.google.android.finsky.activities.PostPurchaseDialog}}
04-05 14:54:35.914 V/WindowManager(483): #3: Token{4185c210 ActivityRecord{4124c250 u0 com.android.vending/com.google.android.finsky.activities.MainActivity}}
04-05 14:54:35.914 V/WindowManager(483): #2: Token{41105cf0 ActivityRecord{41960c70 u0 com.android.chrome/com.google.android.apps.chrome.Main}}
04-05 14:54:35.914 V/WindowManager(483): #1: Token{41659780 ActivityRecord{420aac08 u0 com.android.vending/.AssetBrowserActivity}}
04-05 14:54:35.914 V/WindowManager(483): #0: Token{41251808 ActivityRecord{41279e98 u0 com.google.android.googlequicksearchbox/.SearchActivity}}
04-05 14:54:35.914 W/WindowManager(483): Final window list:
04-05 14:54:35.914 V/WindowManager(483): #0: Window{4179df50 u0 SearchPanel}
04-05 14:54:35.914 V/WindowManager(483): #1: Window{41110bc0 u0 NavigationBar}
04-05 14:54:35.914 V/WindowManager(483): #2: Window{4162c6c0 u0 StatusBar}
04-05 14:54:35.914 V/WindowManager(483): #3: Window{4130e3f0 u0 Keyguard}
04-05 14:54:35.914 V/WindowManager(483): #4: Window{4122e838 u0 Toast}
04-05 14:54:35.914 V/WindowManager(483): #5: Window{417d52c0 u0 InputMethod}
04-05 14:54:35.914 V/WindowManager(483): #6: Window{4122c040 u0 Starting com.android.settings}
04-05 14:54:35.914 V/WindowManager(483): #7: Window{412b1870 u0 com.nolanlawson.logcat/com.nolanlawson.logcat.LogcatActivity}
04-05 14:54:35.914 V/WindowManager(483): #8: Window{411feb78 u0 com.teslacoilsw.launcher/com.android.launcher2.Launcher}
04-05 14:54:35.914 V/WindowManager(483): #9: Window{41277a10 u0 com.android.systemui/com.android.systemui.recent.RecentsActivity}
04-05 14:54:35.914 V/WindowManager(483): #10: Window{4122be18 u0 com.android.vending/com.google.android.finsky.activities.PostPurchaseDialog}
04-05 14:54:35.914 V/WindowManager(483): #11: Window{411ec250 u0 com.android.vending/com.google.android.finsky.activities.MainActivity}
04-05 14:54:35.914 V/WindowManager(483): #12: Window{413741b8 u0 com.android.chrome/com.google.android.apps.chrome.Main}
04-05 14:54:35.914 V/WindowManager(483): #13: Window{416beba8 u0 SurfaceView}
04-05 14:54:35.914 V/WindowManager(483): #14: Window{418f9ec8 u0 com.android.vending/com.android.vending.AssetBrowserActivity}
04-05 14:54:35.914 V/WindowManager(483): #15: Window{4124c0d0 u0 com.google.android.googlequicksearchbox/com.google.android.googlequicksearchbox.SearchActivity}
04-05 14:54:35.914 V/WindowManager(483): #16: Window{417681e0 u0 com.android.systemui.ImageWallpaper}
04-05 14:54:35.954 W/InputMethodManagerService(483): Focus gain on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@410e0500 (uid=10139 pid=5796)
04-05 14:54:36.324 D/BluetoothManagerService(483): Message: 20
04-05 14:54:36.324 D/BluetoothManagerService(483): Added callback: android.bluetooth.IBluetoothManagerCallback$Stub$Proxy@416c49f8:true
04-05 14:54:36.324 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:36.334 D/BluetoothManagerService(483): Message: 30
04-05 14:54:36.334 E/BluetoothInputDevice(6047): Could not bind to Bluetooth HID Service
04-05 14:54:36.334 D/BluetoothPan(6047): BluetoothPan() call bindService
04-05 14:54:36.334 D/BluetoothManagerService(483): Message: 30
04-05 14:54:36.334 E/BluetoothPan(6047): Could not bind to Bluetooth HID Service
04-05 14:54:36.334 D/BluetoothPan(6047): BluetoothPan(), bindService called
04-05 14:54:36.334 W/ContextImpl(6047): Calling a method in the system process without a qualified user: android.app.ContextImpl.bindService:1425 android.content.ContextWrapper.bindService:473 android.bluetooth.BluetoothInputDevice.<init>:240 android.bluetooth.BluetoothAdapter.getProfileProxy:1161 com.android.settings.bluetooth.LocalBluetoothAdapter.getProfileProxy:94
04-05 14:54:36.334 W/ActivityManager(483): Unable to start service Intent { act=android.bluetooth.IBluetoothInputDevice } U=0: not found
04-05 14:54:36.334 W/ContextImpl(6047): Calling a method in the system process without a qualified user: android.app.ContextImpl.bindService:1425 android.content.ContextWrapper.bindService:473 android.bluetooth.BluetoothPan.<init>:141 android.bluetooth.BluetoothAdapter.getProfileProxy:1164 com.android.settings.bluetooth.PanProfile.<init>:73
04-05 14:54:36.334 W/ActivityManager(483): Unable to start service Intent { act=android.bluetooth.IBluetoothPan } U=0: not found
04-05 14:54:36.344 D/BluetoothManagerService(483): Message: 30
04-05 14:54:36.344 E/BluetoothPbap(6047): Could not bind to Bluetooth Pbap Service
04-05 14:54:36.344 D/LocalBluetoothProfileManager(6047): LocalBluetoothProfileManager construction complete
04-05 14:54:36.344 W/ContextImpl(6047): Calling a method in the system process without a qualified user: android.app.ContextImpl.bindService:1425 android.content.ContextWrapper.bindService:473 android.bluetooth.BluetoothPbap.<init>:161 com.android.settings.bluetooth.PbapServerProfile.<init>:68 com.android.settings.bluetooth.LocalBluetoothProfileManager.<init>:124
04-05 14:54:36.344 W/ActivityManager(483): Unable to start service Intent { act=android.bluetooth.IBluetoothPbap } U=0: not found
04-05 14:54:36.364 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:36.364 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:36.684 D/libEGL (6047): loaded /system/lib/egl/libEGL_tegra.so
04-05 14:54:36.864 D/libEGL (6047): loaded /system/lib/egl/libGLESv1_CM_tegra.so
04-05 14:54:36.894 D/libEGL (6047): loaded /system/lib/egl/libGLESv2_tegra.so
04-05 14:54:36.914 D/OpenGLRenderer(6047): Enabling debug mode 0
04-05 14:54:36.944 D/WifiService(483): setWifiEnabled: true pid=6047, uid=1000
04-05 14:54:36.984 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:37.274 I/Choreographer(6047): Skipped 50 frames! The application may be doing too much work on its main thread.
04-05 14:54:37.504 I/ActivityManager(483): Displayed com.android.settings/.Settings: +1s606ms
04-05 14:54:38.614 D/BluetoothManagerService(483): enable(): mBluetooth =null mBinding = false
04-05 14:54:38.614 D/BluetoothManagerService(483): Message: 1
04-05 14:54:38.614 D/BluetoothManagerService(483): MESSAGE_ENABLE: mBluetooth = null
04-05 14:54:38.614 E/BluetoothManagerService(483): Fail to bind to: android.bluetooth.IBluetooth
04-05 14:54:38.614 W/ActivityManager(483): Unable to start service Intent { act=android.bluetooth.IBluetooth } U=0: not found
04-05 14:54:39.744 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:39.744 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:39.744 D/LocalBluetoothManager(6047): setting foreground activity to non-null context
04-05 14:54:39.744 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:39.754 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:39.754 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:39.754 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:39.754 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:42.664 W/ThrottleService(483): unable to find stats for iface rmnet0
04-05 14:54:45.154 D/BluetoothManagerService(483): checkIfCallerIsForegroundUser: valid=true callingUser=0 foregroundUser=0
04-05 14:54:45.154 D/BluetoothManagerService(483): enable(): mBluetooth =null mBinding = false
04-05 14:54:45.164 D/BluetoothManagerService(483): Message: 1
04-05 14:54:45.164 D/BluetoothManagerService(483): MESSAGE_ENABLE: mBluetooth = null
04-05 14:54:45.164 E/BluetoothManagerService(483): Fail to bind to: android.bluetooth.IBluetooth
04-05 14:54:45.164 W/ActivityManager(483): Unable to start service Intent { act=android.bluetooth.IBluetooth } U=0: not found
04-05 14:54:46.114 W/InputMethodManagerService(483): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@41938768 attribute=null, token = android.os.BinderProxy@411285a0
04-05 14:54:47.914 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:47.914 D/LocalBluetoothManager(6047): setting foreground activity to null
04-05 14:54:47.974 V/PhoneStatusBar(606): setLightsOn(true)
04-05 14:54:50.314 I/ActivityManager(483): START u0 {act=android.settings.SETTINGS flg=0x14000000 cmp=com.android.settings/.Settings} from pid 606
04-05 14:54:50.734 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:50.834 D/WifiService(483): setWifiEnabled: true pid=6047, uid=1000
04-05 14:54:50.844 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:51.374 I/ActivityManager(483): Displayed com.android.settings/.Settings: +759ms
04-05 14:54:52.254 D/BluetoothManagerService(483): enable(): mBluetooth =null mBinding = false
04-05 14:54:52.254 D/BluetoothManagerService(483): Message: 1
04-05 14:54:52.254 D/BluetoothManagerService(483): MESSAGE_ENABLE: mBluetooth = null
04-05 14:54:52.254 E/BluetoothManagerService(483): Fail to bind to: android.bluetooth.IBluetooth
04-05 14:54:52.254 W/ActivityManager(483): Unable to start service Intent { act=android.bluetooth.IBluetooth } U=0: not found
04-05 14:54:53.664 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:53.664 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:53.664 D/LocalBluetoothManager(6047): setting foreground activity to non-null context
04-05 14:54:53.664 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:53.664 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:53.664 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:53.664 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:53.664 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:55.124 D/BluetoothAdapter(6047): 1099296520: getState() : mService = null. Returning STATE_OFF
04-05 14:54:55.124 D/LocalBluetoothManager(6047): setting foreground activity to null
04-05 14:54:55.174 V/PhoneStatusBar(606): setLightsOn(true)

Extra info:

Problems isolated, logcat useless apparently.

OK, so here is all the information I know so far.

1)

adb shell

am start -a android.bluetooth.adapter.action.REQUEST_ENABLE

'Turning on bluetooth' box hangs.

Toggling on Bluetooth gives:

519 BluetoothManagerService 'Fail to bind to: android.bluetooth.iBluetooth

I have reflashed the ROM i was using, the apparently fixed 3.15 Paranoid Android march 4.2.2 stable build

Extra extra info:

PLEASE help me! I'm a patient guy, but I've been waiting nearly a month for an answer! (formerly, please delete -dismiss- ) Please!! Does this thread have some kind of aversion to people? I'll give whoever helps me an invisible cookie! :3