/new lag and not create new session

Open 💬 3 comments Opened Jul 21, 2026 by khanhthanhdev
💡 Likely answer: A maintainer (etraut-openai, contributor) responded on this thread — see the highlighted reply below.

What version of Codex CLI is running?

0.144.6

What subscription do you have?

Plus

Which model were you using?

_No response_

What platform is your computer?

WSL2 Ubuntu 24.04 LTS

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

Window Terminal WSL

Codex doctor report

{
  "schemaVersion": 1,
  "generatedAt": "1784596586s since unix epoch",
  "overallStatus": "warning",
  "codexVersion": "0.144.6",
  "checks": {
    "app_server.status": {
      "id": "app_server.status",
      "category": "app-server",
      "status": "ok",
      "summary": "background server is not running",
      "details": {
        "control socket": "/home/thanh/.codex/app-server-control/app-server-control.sock",
        "daemon state dir": "/home/thanh/.codex/app-server-daemon",
        "mode": "ephemeral",
        "pid file": "/home/thanh/.codex/app-server-daemon/app-server.pid (missing)",
        "settings": "/home/thanh/.codex/app-server-daemon/settings.json (missing)",
        "status": "not running",
        "update-loop pid file": "/home/thanh/.codex/app-server-daemon/app-server-updater.pid (missing)"
      },
      "remediation": null,
      "durationMs": 0
    },
    "auth.credentials": {
      "id": "auth.credentials",
      "category": "auth",
      "status": "ok",
      "summary": "auth is configured",
      "details": {
        "auth file": "/home/thanh/.codex/auth.json",
        "auth storage mode": "File",
        "stored API key": "false",
        "stored ChatGPT tokens": "true",
        "stored agent identity": "false",
        "stored auth mode": "chatgpt"
      },
      "remediation": null,
      "durationMs": 0
    },
    "config.load": {
      "id": "config.load",
      "category": "config",
      "status": "ok",
      "summary": "config loaded",
      "details": {
        "CODEX_HOME": "/home/thanh/.codex",
        "config.toml": "/home/thanh/.codex/config.toml",
        "config.toml parse": "ok",
        "cwd": "/home/thanh/code/vinuni/aikc",
        "enabled feature flags": "shell_tool, unified_exec, shell_snapshot, code_mode_host, terminal_resize_reflow, sqlite, memories, hooks, enable_request_compression, multi_agent, apps, tool_search_always_defer_mcp_tools, tool_suggest, plugins, in_app_browser, browser_use, browser_use_full_cdp_access, browser_use_external, computer_use, remote_plugin, plugin_sharing, external_migration, image_generation, resize_all_images, skill_mcp_dependency_install, mentions_v2, steer, guardian_approval, goals, collaboration_modes, tool_call_mcp_elicitation, auth_elicitation, personality, fast_mode, tui_app_server, prevent_idle_sleep, remote_compaction_v2, workspace_dependencies",
        "feature flag overrides": "memories=true, external_migration=true, prevent_idle_sleep=true",
        "feature flags enabled": "38",
        "log dir": "/home/thanh/.codex/log",
        "mcp servers": "2",
        "model": "gpt-5.6-terra",
        "model provider": "openai",
        "sqlite home": "/home/thanh/.codex"
      },
      "remediation": null,
      "durationMs": 0
    },
    "git.environment": {
      "id": "git.environment",
      "category": "git",
      "status": "ok",
      "summary": "git version 2.43.0",
      "details": {
        ".git entry": "directory",
        "PATH git #1": "/usr/bin/git",
        "PATH git #2": "/bin/git",
        "PATH git entries": "2",
        "git branch": "main",
        "git build options": "git version 2.43.0; cpu: x86_64; no commit associated with this build; sizeof-long: 8; sizeof-size_t: 8; shell-path: /bin/sh",
        "git exec path": "/usr/lib/git-core",
        "git version": "git version 2.43.0",
        "repo detected": "true",
        "repo root": "/home/thanh/code/vinuni/aikc",
        "selected git": "/usr/bin/git"
      },
      "remediation": null,
      "durationMs": 115
    },
    "installation": {
      "id": "installation",
      "category": "install",
      "status": "ok",
      "summary": "installation looks consistent",
      "details": {
        "PATH codex #1": "/home/thanh/.local/bin/codex",
        "PATH codex #2": "/home/thanh/.local/bin/codex",
        "PATH codex #3": "/home/thanh/.local/bin/codex",
        "PATH codex #4": "/home/thanh/.local/bin/codex",
        "PATH codex #5": "/home/thanh/.local/bin/codex",
        "PATH codex #6": "/home/thanh/.local/bin/codex",
        "PATH codex entries": "6",
        "current executable": "/home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/bin/codex",
        "install context": "standalone (unix, package /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl, bin /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/bin, resources /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/codex-resources, path /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/codex-path)",
        "managed by bun": "false",
        "managed by npm": "false",
        "managed by pnpm": "false",
        "managed package root": "not set"
      },
      "remediation": null,
      "durationMs": 45
    },
    "mcp.config": {
      "id": "mcp.config",
      "category": "mcp",
      "status": "warning",
      "summary": "MCP configuration has optional issues",
      "details": {
        "configured servers": "2",
        "disabled servers": "0",
        "optional reachability failed": "fusion360: http://127.0.0.1:27182/mcp (HEAD request timed out; GET request timed out)",
        "stdio servers": "1",
        "streamable_http servers": "1"
      },
      "remediation": "Set the missing MCP env vars or disable the affected server.",
      "durationMs": 6037
    },
    "network.env": {
      "id": "network.env",
      "category": "network",
      "status": "ok",
      "summary": "network-related environment looks readable",
      "details": {
        "proxy env vars": "none"
      },
      "remediation": null,
      "durationMs": 0
    },
    "network.provider_reachability": {
      "id": "network.provider_reachability",
      "category": "reachability",
      "status": "ok",
      "summary": "active provider endpoints are reachable over HTTP",
      "details": {
        "ChatGPT base URL": "https://chatgpt.com/backend-api/ reachable (HTTP 404)",
        "reachability mode": "ChatGPT auth"
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      "remediation": null,
      "durationMs": 390
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    "network.websocket_reachability": {
      "id": "network.websocket_reachability",
      "category": "websocket",
      "status": "ok",
      "summary": "Responses WebSocket handshake succeeded",
      "details": {
        "DNS": "2 IPv4, 2 IPv6, first IPv6",
        "auth mode": "chatgpt",
        "connect timeout": "15000 ms",
        "endpoint": "wss://chatgpt.com/backend-api/<redacted>",
        "handshake result": "HTTP 101 Switching Protocols",
        "model provider": "openai",
        "models etag present": "true",
        "provider name": "OpenAI",
        "proxy env vars": "none",
        "reasoning header": "false",
        "server model present": "false",
        "supports websockets": "true",
        "wire API": "responses"
      },
      "remediation": null,
      "durationMs": 808
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    "runtime.provenance": {
      "id": "runtime.provenance",
      "category": "runtime",
      "status": "ok",
      "summary": "running standalone on linux-x86_64",
      "details": {
        "commit": "unknown",
        "current executable": "/home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/bin/codex",
        "install method": "standalone (unix, package /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl, bin /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/bin, resources /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/codex-resources, path /home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/codex-path)",
        "platform": "linux-x86_64",
        "version": "0.144.6"
      },
      "remediation": null,
      "durationMs": 0
    },
    "runtime.search": {
      "id": "runtime.search",
      "category": "search",
      "status": "ok",
      "summary": "search is OK (bundled)",
      "details": {
        "search command": "/home/thanh/.codex/packages/standalone/releases/0.144.6-x86_64-unknown-linux-musl/codex-path/rg",
        "search command readiness": "file exists",
        "search provider": "bundled"
      },
      "remediation": null,
      "durationMs": 0
    },
    "sandbox.helpers": {
      "id": "sandbox.helpers",
      "category": "sandbox",
      "status": "ok",
      "summary": "sandbox configuration is readable",
      "details": {
        "approval policy": "Never",
        "codex-linux-sandbox helper": "/home/thanh/.codex/tmp/arg0/codex-arg0C7RIeG/codex-linux-sandbox",
        "execve wrapper helper": "/home/thanh/.codex/tmp/arg0/codex-arg0C7RIeG/codex-execve-wrapper",
        "filesystem sandbox": "unrestricted",
        "network sandbox": "enabled"
      },
      "remediation": null,
      "durationMs": 2
    },
    "state.paths": {
      "id": "state.paths",
      "category": "state",
      "status": "ok",
      "summary": "state paths and databases are inspectable",
      "details": {
        "CODEX_HOME": "/home/thanh/.codex (dir)",
        "active rollout files": "888 files, 792817146 total bytes, 892812 average bytes",
        "archived rollout files": "0 files, 0 total bytes, 0 average bytes",
        "goals DB": "/home/thanh/.codex/goals_1.sqlite (file)",
        "goals DB integrity": "ok",
        "log DB": "/home/thanh/.codex/logs_2.sqlite (file)",
        "log DB integrity": "ok",
        "log dir": "/home/thanh/.codex/log (dir)",
        "memories DB": "/home/thanh/.codex/memories_1.sqlite (file)",
        "memories DB integrity": "ok",
        "sqlite home": "/home/thanh/.codex (dir)",
        "standalone release cache": "4 entries in /home/thanh/.codex/packages/standalone/releases",
        "state DB": "/home/thanh/.codex/state_5.sqlite (file)",
        "state DB integrity": "ok"
      },
      "remediation": null,
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    "state.rollout_db_parity": {
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      "details": {
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        "rollout DB archive mismatches": "0",
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        "rollout DB duplicate rollout thread ids": "0",
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        "rollout DB missing active sample": [
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          "/home/thanh/.codex/sessions/2026/04/04/rollout-2026-04-04T10-33-14-019d568d-4da9-7431-bfb8-415ea29f09bc.jsonl",
          "/home/thanh/.codex/sessions/2026/04/04/rollout-2026-04-04T10-23-09-019d5684-120d-77d2-84a6-8c98322bcb3c.jsonl",
          "/home/thanh/.codex/sessions/2026/04/04/rollout-2026-04-04T10-20-31-019d5681-a873-7c12-9ef4-b1c5a4ec7420.jsonl",
          "/home/thanh/.codex/sessions/2026/04/04/rollout-2026-04-04T10-32-54-019d568d-0209-7861-93cb-42d1e01a6ce9.jsonl"
        ],
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        "rollout DB sources": "cli=724, subagent:thread_spawn=80, subagent:other=27, unknown=21, subagent:review=12, exec=10, vscode=1",
        "rollout DB stale row sample": [
          "/home/thanhkt/.codex/sessions/2026/02/28/rollout-2026-02-28T21-30-14-019ca4a8-3bc1-76e1-9044-5f9d7bd0d47b.jsonl",
          "/home/thanhkt/.codex/sessions/2026/02/28/rollout-2026-02-28T23-10-30-019ca504-083a-7920-881f-55e10c6e6972.jsonl",
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          "/home/thanhkt/.codex/sessions/2026/03/01/rollout-2026-03-01T11-00-40-019ca78e-3565-7971-892c-ada1c43fe145.jsonl"
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          "remedy": null,
          "fields": []
        },
        {
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          "measured": "777 stale rows",
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          "fields": []
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      "durationMs": 14741
    },
    "system.environment": {
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      "category": "system",
      "status": "ok",
      "summary": "OS language C",
      "details": {
        "EDITOR": "not set",
        "LANG": "C.UTF-8",
        "LESS": "set",
        "PAGER": "set",
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        "os": "Ubuntu 24.4.0 (noble) [64-bit]",
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    "terminal.env": {
      "id": "terminal.env",
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      "status": "warning",
      "summary": "height 14 rows - content may scroll off (recommended >=24)",
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        "DISPLAY": "present",
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      },
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          "measured": "127 x 14",
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          "fields": [
            "terminal size"
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      ],
      "remediation": null,
      "durationMs": 0
    },
    "terminal.title": {
      "id": "terminal.title",
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      "status": "ok",
      "summary": "terminal title default",
      "details": {
        "terminal title activity": "true",
        "terminal title items": "activity, project-name",
        "terminal title project source": "git repo root",
        "terminal title project value": "aikc",
        "terminal title source": "default"
      },
      "remediation": null,
      "durationMs": 0
    },
    "updates.status": {
      "id": "updates.status",
      "category": "updates",
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      "summary": "update configuration is locally consistent",
      "details": {
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        "check for update on startup": "true",
        "last checked at": "2026-07-20T09:07:39.378213411Z",
        "latest version": "0.144.6",
        "latest version status": "current version is not older",
        "update action": "standalone installer",
        "version cache": "/home/thanh/.codex/version.json"
      },
      "remediation": null,
      "durationMs": 532
    }
  }
}

What issue are you seeing?

<img width="1184" height="487" alt="Image" src="https://github.com/user-attachments/assets/4f153463-461a-496b-80fe-ad19a03dc806" />

What steps can reproduce the bug?

Run a session,
Type: /new to create new session and stuck

What is the expected behavior?

Type /new to create new session

Additional information

_No response_

View original on GitHub ↗

2 Comments

khanhthanhdev · 1 month ago

I also found it take very long time to do /compact

etraut-openai contributor · 1 month ago

Thanks for the report. I think we found a likely cause for the /new delay.

Your Doctor report shows that the configured fusion360 MCP server at http://127.0.0.1:27182/mcp is unreachable, and its reachability checks took about six seconds to time out. In Codex CLI 0.144.6, starting a new thread can wait for HTTP MCP authentication discovery, so an unavailable optional MCP server can delay /new.

Could you temporarily disable that server in ~/.codex/config.toml, fully restart Codex, and try /new again?

[mcp_servers.fusion360]
enabled = false

Please let us know the approximate /new time before and after disabling it. If that makes /new immediate, it confirms the cause. This is related to #29376, and the blocking startup behavior has already been fixed on main.

The slow /compact may be a separate problem because it does not start a new thread. If it remains slow with fusion360 disabled, please:

  1. Record approximately how long /compact takes and whether it eventually completes or reports an error.
  2. Run /feedback immediately afterward and paste the resulting Uploaded thread: ... ID here.
  3. If you have any PreCompact or PostCompact hooks configured, share those sections with secrets and private paths removed.

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