[SOLVED] fastboot indefinitely waits yet phone connected

[VinzC]

Hi all.

I don't know if my issue is related to Gentoo but here I am anyway. I'm trying to install postmarketOS (in recovery mode, I haven't tried the regular installation yet) on my MotoG (1st gen), which I bought 5 years ago. I've successfully built the OS recovery image but now I need to retrieve what I guess is some kind of an identifier from Motorola using this command:

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fastboot oem get_unlock_data

1. Install the Android SDK. <Download link>
2. Install the latest Motorola USB Drivers on your desktop. <Download>.

Next get your Device ID

1. Put your device in fastboot mode (power off, then press the power and volume down buttons simultaneously).
2. On your desktop, open a command prompt or terminal, and go to the directory where you installed the Android SDK tools (or make sure fastboot is in your $PATH)
3. At the prompt, type

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   $ fastboot oem get_unlock_data

Of course those drivers are Windows or MacOS only *sighs* . But do I need them?

So, I do have android-tools installed, enabled Developer options on my phone, shut it down then pressed VolumeDown + Power buttons simultaneously and I have the boot menu on the phone:

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Boot Mode Selection Menu
  Vol Up Selects, Vol Down Scrolls
    Normal Powerup
    Recovery
    Factory
    Barcodes
    BP Tools
    QCOM
________________________________________
Fastboot Reason: Volume down key pressed
USB connected

The trouble is fastboot indefinitely <wait for any device>. I guess I have missed something but what? What should I do next? Is there a kernel module I must enable?

If I boot the phone in recovery mode, it only shows No command and I can only power it down. Stuck there...

Thanks for any hint/suggestion.

[VinzC]

I think I've fixed it: the USB link mode was set to storage device (PTP, if I remember correctly) and I set it to MTP (photo device). rebooted in fastboot mode and it worked. I also ran into the same kind of issue after flashing the phone and it reported the image size was too big. So I was advised to run fastboot as root and it worked.