$ emulator -help-debug-tags
the '-debug <tags>' option can be used to enable or disable debug
messages from specific parts of the emulator. <tags> must be a list
(separated by space/comma/column) of <component> names, which can be one of:
init emulator initialization
console control console
modem emulated GSM modem
radio emulated GSM AT Command channel
keys key bindings & presses
slirp internal router/firewall
timezone host timezone detection
socket network sockets
proxy network proxy support
audio audio sub-system
audioin audio input backend
audioout audio output backend
surface video surface support
qemud qemud multiplexer daemon
gps emulated GPS
nand_limits nand/flash read/write thresholding
hw_control emulated power/flashlight/led/vibrator
avd_config android virtual device configuration
sensors emulated sensors
memcheck memory checker
camera camera
adevice android device connected via port forwarding
sensors_port sensors emulator connected to android device
mtport multi-touch emulator connected to android device
mtscreen multi-touch screen emulation
gles hardware OpenGLES emulation
adbserver ADB server
adbclient ADB QEMU client
adb ADB debugger
asconnector Asynchronous socket connector
asyncsocket Asynchronous socket
sdkctlsocket Socket tethering to SdkControl server
all all components together
each <component> can be prefixed with a single '-' to indicate the disabling
of its debug messages. for example:
-debug all,-socket,-keys
enables all debug messages, except the ones related to network sockets
and key bindings/presses