When I use -e option to sepecify a device, errer happen.
raise device_errors.MultipleDevicesError(devices)
devil.android.device_errors.MultipleDevicesError: More than one device available. Use -d/--device to select a device by serial.
When I use -e option to sepecify a device, errer happen.
raise device_errors.MultipleDevicesError(devices)
devil.android.device_errors.MultipleDevicesError: More than one device available. Use -d/--device to select a device by serial.
Are you using this python script? What's the command like?
Can you try this:
python <android-sdk>/platform-tools/systrace/systrace.py --list-categories -e <device-serial-number>