Headless chromebook(lillipup) - no display output for firmware screen

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1

System Details

  • Device: LILLIPUP
  • OS: Arch linux
  • Firmware Type: UEFI Full ROM
  • Firmware Version: 2026.07.09 / 2606.6
  • Internal storage type: NVMe

Summary of the Issue

I converted my chromebook to a headless one, the original screen removed.
When I boot there is NO SIGNAL on my display until display outputs as normal when in sddm an desktop environment.
I cannot access firmware on the external monitor at all.

What is not displayed: edk2, grub menu entries, decryption field and verbose post-decryption info.

Hardware is OK - tested with different pc and monitor.

Steps to Reproduce

  1. Disconnect the LCD unit completely

  2. Boot up

Expected Behavior

External display shows output on the firmware screen and grub.

Linked topics

2

Boot into uefi from the OS

3

still no output.

4

@MrChromebox(sorry for the ping) I’m guessing this involves the firmware, if so, is it possible to fix this?

5

ping me on discord and I’ll give you a test build to try

6

Where can I find your discord, is this a group I need to join?

7

also I don’t mind flashing the test build but can the test build possibly brick my device?

because I cannot unbrick my chromebook since I got no hardware for unbricking.

8

no, this would just be testing things to try and get the external display functional

10

I also updated to the latest 2606.6 release just so you know in case this may affect testing.

11

ok then, I’m good to go then, how do I contact you on discord?

12

how does one contact anyone else on Discord?

13

(post deleted by author)

14

right… I sent you my username in a DM.DM me on discord if it is fine with you.

15

Testing complete, MrChromebox will update upstream if no further issues are found :slight_smile: