logcat
--------- beginning of /dev/log/system
I/Vold    (   88): Vold 2.1 (the revenge) firing up
D/Vold    (   88): Volume sdcard state changing -1 (Initializing) -> 0 (No-Media)
D/Vold    (   88): Volume emmc state changing -1 (Initializing) -> 0 (No-Media)
D/Vold    (   88): Volume sdcard state changing 0 (No-Media) -> 2 (Pending)
D/Vold    (   88): Volume sdcard state changing 2 (Pending) -> 1 (Idle-Unmounted)
D/Vold    (   88): Volume emmc state changing 0 (No-Media) -> 2 (Pending)
D/Vold    (   88): Volume emmc state changing 2 (Pending) -> 1 (Idle-Unmounted)
D/Vold    (   88): usb_mass_storage function enabled
D/Vold    (   88): USB connected
D/Vold    (   88): Share method ums now available
D/Vold    (   88): USB disconnected
D/Vold    (   88): Share method ums now unavailable
D/Vold    (   88): USB connected