Linux Codex CLI remote-control registers successfully but ChatGPT Android fails with "Remote-control pairing session not found"

What version of Codex CLI is running?

0.142.5

What subscription do you have?

Pro

Which model were you using?

_No response_

What platform is your computer?

Ubuntu

What terminal emulator and version are you using (if applicable)?

_No response_

Codex doctor report

In doctor no issue reported. See the output in the message description.

What issue are you seeing?

Title

Linux Codex CLI remote-control registers successfully but ChatGPT Android fails with "Remote-control pairing session not found"

Environment

OS: Ubuntu 24.04 LTS

Codex CLI: 0.142.5

ChatGPT Android app (latest available)

Same ChatGPT account on CLI and mobile

Login method: ChatGPT authentication

Summary

The Linux Codex CLI appears to register successfully for remote control, but the ChatGPT Android application cannot pair with it.

The mobile flow ends with:

Remote-control pairing session not found. Check the pairing code and try again.

What works

Remote control daemon:

codex remote-control start --json

returns (abridged):

{
"mode": "daemon",
"status": "connected",
"serverName": "development",
"environmentId": "env_..."
}

The daemon is running:

codex app-server daemon version

returns running status.

Remote control has been enabled:

codex app-server daemon enable-remote-control

Doctor output:

WebSocket connected

HTTP 101 Switching Protocols

Background app-server running

18 OK

0 warnings

0 failures

Linux checks:

cat /proc/sys/kernel/unprivileged_userns_clone

returns

1

Bubblewrap:

bwrap 0.9.0

installed in

/usr/bin/bwrap

Codex installation:

~/.codex/packages/standalone/...

(not Snap, not Flatpak)

Mobile flow

In ChatGPT Android:

1. Remote Access

1. Manual Pairing

1. Device authorization page opens

1. Account authorization succeeds

1. Phone authorization succeeds

1. Final error:

Remote-control pairing session not found.

Expected

The Linux CLI should either:

generate a pairing session / pairing code,

expose a QR code,

or automatically appear as a remote host in ChatGPT Mobile.

Actual

The daemon reports:

connected

websocket connected

environment registered

but the mobile application cannot find the pairing session.

Additional observations

It looks like the Linux CLI successfully registers an environment but never exposes a pairing session consumable by ChatGPT Mobile.

Is Linux remote pairing currently supported, or is an additional pairing command required?

---

What steps can reproduce the bug?

Try connecting from mobile to the cli. Try starting the cli in remote mode and try finding it's connection in the cloud by remote connecting in android chatgpt app

What is the expected behavior?

In the app you will receive: the remote control pairing session not found.

Additional information

_No response_