Issue: Browser tool fails to start due to missing X server

What version of Codex CLI is running?

codex-cli 0.98.0

What subscription do you have?

gpt-5.2-codex

Which model were you using?

gpt-5.2-codex

What platform is your computer?

Linux 6.8.0-90-generic x86_64 x86_64

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

Gnome Terminal

What issue are you seeing?

Missing X server to start the headful browser. Either set headless to true or use xvfb-run to run your Puppeteer script.

What steps can reproduce the bug?

1. Call mcp__chrome-devtools__new_page with any URL
2. Wait for the browser to launch

What is the expected behavior?

The browser starts successfully and opens the page

Additional information

_No response_