ADB is not starting (no error message)

Question

I am trying to run adb. When I run : \"adb start-server\" it hangs during a while, and then no message.

After that the command \"adb get-state\" receive the answer \

Answer 1

The output can be pinned down to transport code:

D("readx: fd=%d wanted=%d\n", fd, (int)len);

while(len > 0) {
    r = adb_read(fd, p, len);
    if(r > 0) {
        len -= r;
        p += r;
    } else {
        if (r < 0) {
            D("readx: fd=%d error %d: %s\n", fd, errno, strerror(errno));
            if (errno == EINTR)
                continue;
        } else {
            D("readx: fd=%d disconnected\n", fd);
        }
        return -1;
    }

this might mean adb_read() returns 0 (EOF), while transport tries to read next 4. So, looks like the transport is not being able to read anything but EOF, and simply disconnects. This maybe a USB Driver issue.

Try using Linux, or running commands with root/admin privilege.