I tried different configurations according to init.usb.rc (imported at the beginning of /init.rc)
There is also usb conf in /init.factory.rc and /meta_init.rc both dealing with adb and acm (my android knowledge is very limited and i do not know the purpose of these settings)
combined (more than 2 values) configuration like one corresponding to #11: persist.sys.usb.config=mtp,mass_storage,adb do not works
I confirm also that : persist.sys.usb.config=mass_storage,adb do not allow to mount /sdcard2 (external sdcard) on computer (only internal sdcard in visible and mount.
THe strange part of the process is that /sdcard2 is unmount from the device (ACER) but not presented to the computer.
I tried to reformat the external sdcard2 without success.
any idea ?
Edited by jaarvin, 02 October 2012 - 01:07 PM.