[android-developers] Black screen issue

Hi,

Sometime when I launch my app, I see a black screen. I see this
exception in the logs - it is not from my app. Does anyone know what
is causing this?

09-14 13:54:42.023: INFO/HomeKeyDoubleClick(2976): addAction() is
called. action = 1 canceled = false
09-14 13:54:42.023: INFO/InputDispatcher(2976): Delivering key to
current input target: action: 1, channel '4081cb28 Keyguard (server)'
09-14 13:54:42.023: DEBUG/
MotionRecognitionService(2976): .initializeMotionEngine
09-14 13:54:42.028: ERROR/lights(2976): write_int: path /sys/class/
backlight/pwm-backlight/brightness, value 34
09-14 13:54:42.038: ERROR/gralloc(24233): Failed to create UMP handle
09-14 13:54:42.038: WARN/GraphicBufferMapper(24233):
registerBuffer(0x1e6cb8) failed -22 (Invalid argument)
09-14 13:54:42.038: WARN/Surface(24233): registerBuffer(...) failed
-22 (Invalid argument)
09-14 13:54:42.038: ERROR/Surface(24233): getBufferLocked(1, 0, 0, 0,
00000033) failed (Invalid argument)
09-14 13:54:42.038: ERROR/Surface(24233): dequeueBuffer failed
(Invalid argument)
09-14 13:54:42.038: ERROR/ViewRoot(24233): IllegalArgumentException
locking surface
09-14 13:54:42.038: ERROR/ViewRoot(24233):
java.lang.IllegalArgumentException
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.view.Surface.lockCanvasNative(Native Method)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.view.Surface.lockCanvas(Surface.java:322)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.view.ViewRoot.draw(ViewRoot.java:1464)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.view.ViewRoot.performTraversals(ViewRoot.java:1266)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.view.ViewRoot.handleMessage(ViewRoot.java:1868)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.os.Handler.dispatchMessage(Handler.java:99)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.os.Looper.loop(Looper.java:130)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
android.app.ActivityThread.main(ActivityThread.java:3691)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
java.lang.reflect.Method.invokeNative(Native Method)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
java.lang.reflect.Method.invoke(Method.java:507)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:847)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
09-14 13:54:42.038: ERROR/ViewRoot(24233): at
dalvik.system.NativeStart.main(Native Method

Appreciate any feedback

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