I'd like to install Ubuntu on a Asus Chromebook C300MA-DB01, but Esc+Refresh+Power does not boot into Recovery mode, so I can't get into Developer mode. It simply boots normally, asking for password.
- I've tried from a powered off state, which I understand to be the correct way, and a from a powered on state, with the same result.
- I've already Recovered, Powerwashed, etc.
- I've changed to both Dev and Stable channels, with no difference.
- I bought it used, so I've verified it is not a "managed' machine.
- I've also installed crouton integration and Chromebook Recovery Utility, and have tried with each/both, enabled and disabled.
Note: Ctrl+Alt+Shift+R enters a different Recovery Mode with option to PowerWash only, not the one where you can press Ctrl+D to get into Developer mode.
I'm stumped. How can I get into Developer Mode?