我是这个论坛的新手。我的设备无法启动。我安装了 android-sdk 并使用 Logcat 找到了这个：
W/Zygote ( 257): Class not found for preloading: android.media.AudioManager$2
W/dalvikvm( 257): Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Landroid/media/CameraProfile;
E/Zygote ( 257): Error preloading android.media.CameraProfile.
E/Zygote ( 257): java.lang.ExceptionInInitializerError
E/Zygote ( 257): at java.lang.Class.classForName(Native Method)
E/Zygote ( 257): at java.lang.Class.forName(Class.java:217)
E/Zygote ( 257): at java.lang.Class.forName(Class.java:172)
E/Zygote ( 257): at com.android.internal.os.ZygoteInit.preloadClasses(ZygoteInit.java:285)
E/Zygote ( 257): at com.android.internal.os.ZygoteInit.preload(ZygoteInit.java:232)
E/Zygote ( 257): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:520)
E/Zygote ( 257): at dalvik.system.NativeStart.main(Native Method)
E/Zygote ( 257): Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: link_image[1936]: 257 could not load needed library 'libstagefright.so' for 'libmedia_jni.so' (reloc_library[1285]: 257 cannot locate '_ZN7logging10LogMessageC1EPKcii'...
E/Zygote ( 257): )
E/Zygote ( 257): at java.lang.Runtime.loadLibrary(Runtime.java:391)
E/Zygote ( 257): at java.lang.System.loadLibrary(System.java:535)
E/Zygote ( 257): at android.media.CameraProfile.<clinit>(CameraProfile.java:92)
E/Zygote ( 257): ... 7 more
D/AndroidRuntime( 257): Shutting down VM
W/dalvikvm( 257): threadid=1: thread exiting with uncaught exception (group=0x40a611f8)
I/Netd ( 266): Netd 1.0 starting
E/Netd ( 266): Unable to create netlink socket: Protocol not supported
E/Netd ( 266): Unable to open quota2 logging socket
提到的两个库（libmedia_jni.so 和 libstagefright.so）都在 /system/lib 中。我也尝试使用音量键启动它，但没有任何变化。
谢谢