This thread a stub for work getting a Lenovo 10e working with Archlinux ARM
So far I just got Developer Mode going which was a bit oblique to find so am starting with documenting that:
Found via an amazing reddit user / https://www.reddit.com/r/chromeos/comments/r7iph5/lenovo_10e_developer_mode/hncaoa0/?context=3:
$this->bbcode_second_pass_quote('', 'F')or some reason, the firmware doesn't have screen output under certain conditions.
To enter developer mode, use the standard key combination used on the Duet. Release after ~5 seconds, and you'll see the white power button light turn on. You'll see a black screen. Press both volume buttons at the same time once. Then, press the volume up button (has a + sign) around 10 times. Press the power button once. Wait 5 seconds. A screen should show. You're in dev mode.
Every time you boot up, the developer mode screen should work.