GitHub Copilot autocompletion does not work

[BrazilForever11]

Positron Version: 2025.12.1 (user setup) build 4
Code - OSS Version: 1.106.0
Commit: f70a9bc
Date: 2025-12-05T21:10:23.935Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.26200

Python 3.11.5

Something happened and my GitHub Copilot autocompletion does not work in Positron any more. It still works fine in VSCode. How can I troubleshoot? Chat is still working fine. I already I am signed into GitHub Copilot.

[testlabauto]

Hi @BrazilForever11,

Thanks for your bug report. Could run the:

positron-assistant.collectDiagnostics

command for us and share the report in this thread?

[BrazilForever11]

`# Positron Assistant Diagnostics

Generated: 2025-12-11T22:57:00.442Z

Privacy Notice: This diagnostic report includes:

• Extension versions and configuration settings
• Model configurations (including base URLs and model IDs)
• System information (OS, architecture)
• Recent log entries
• Chat session metadata

The report does NOT include API keys or authentication tokens. However, base URLs may reveal internal endpoints, and configuration settings might expose security policies. Please review carefully before sharing.

Version Information

• Positron Assistant: Version 0.0.1 (Active)
• GitHub Copilot Chat: Version 0.34.0 (Active)
• Positron: 2025.12.1 (build 4)
• Code OSS: 1.106.0
• Application: Positron
• OS: win32 x64

Configuration Settings

Extension Settings

Positron Assistant and GitHub Copilot settings:

  "positron.assistant.enable": true,
  "positron.assistant.inlineCompletions.enable": {
    "*": true
  },
  "positron.assistant.inlineCompletionExcludes": [
    "**/.*"
  ],
  "positron.assistant.maxInputTokens": {},
  "positron.assistant.maxOutputTokens": {},
  "positron.assistant.filterModels": [
    "claude",
    "gpt"
  ],
  "positron.assistant.defaultModels": {},
  "positron.assistant.configuredModels": {},
  "positron.assistant.notebookSuggestions.model": [
    "haiku",
    "mini"
  ],
  "positron.assistant.providerVariables.bedrock": {},
  "positron.assistant.providerVariables.snowflake": {},
  "github.copilot.nextEditSuggestions.enabled": true,
  "github.copilot.enable": {
    "quarto": false
  },
  "github.copilot.chat.reviewSelection.instructions": [],
  "github.copilot.chat.codeGeneration.instructions": [],
  "github.copilot.chat.testGeneration.instructions": [],
  "github.copilot.chat.commitMessageGeneration.instructions": [],
  "github.copilot.chat.pullRequestDescriptionGeneration.instructions": [],
  "github.copilot.chat.azureModels": {},
  "github.copilot.chat.customOAIModels": {},
  "github.copilot.chat.anthropic.tools.websearch.allowedDomains": [],
  "github.copilot.chat.anthropic.tools.websearch.blockedDomains": []

Language Model Providers

Configured Providers

• GitHub Copilot
  • Provider: copilot
  • Types: completion

Available Models

copilot (10 models)

• GPT-5 mini (gpt-5-mini) - Max Input: 127805
• GPT-5 (gpt-5) - Max Input: 127805
• GPT-4o mini (gpt-4o-mini-2024-07-18) - Max Input: 12093
• GPT-4o (gpt-4o-2024-11-20) - Max Input: 63805
• GPT-4o (gpt-4o) - Max Input: 63805
• GPT-4.1 (gpt-4.1-2025-04-14) - Max Input: 111424
• GPT-4.1 (gpt-4.1) - Max Input: 111424
• GPT 3.5 Turbo (gpt-3.5-turbo-0613) - Max Input: 12093
• GPT 4 (gpt-4) - Max Input: 28480
• Auto (auto) - Max Input: 127805

Active Chat Session

No active chat session

Positron Assistant Logs

Recent log entries (last 500):

[2025-12-11T22:56:18.182Z] TRACE [commands] Unsupported command mode: editor
[2025-12-11T22:56:18.190Z] TRACE [commands] Unsupported command mode: editor
[2025-12-11T22:56:18.225Z] TRACE [commands] Unsupported command mode: editor
[2025-12-11T22:56:18.229Z] TRACE [commands] Unsupported command mode: ask
[2025-12-11T22:56:19.206Z] DEBUG [Amazon Bedrock] Not running on Posit Workbench, skipping autoconfigure
[2025-12-11T22:56:19.206Z] DEBUG [Snowflake Cortex] Not running on Posit Workbench, skipping autoconfigure

---

`

[testlabauto]

Hi @BrazilForever11,

Thank you! That report looks good to us! Lets move on to some more debugging:

• Could you share your GitHub Copilot Language Server output logs after trying to trigger the completions? Curious if we see any errors there. This is where GitHub Copilot auth and completions logs go.

For reference:

• Just in case, have you tried signing out and then back in to GitHub Copilot, then trying to invoke completions again?

• If you click on the assistant status bar icon, does the popup show that completions are snoozed or disabled? https://positron.posit.co/assistant-completions.html#status-bar-icon

For reference: