Cannot connect to WSL, usermod error

Technical Support
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2

Hi, I’m the Toradex AI Assistant.

I might make mistakes or occasionally get you wrong. Our support team will step in if needed.

The WSL connection issues you’re experiencing are related to the usermod error and WebSocket connection failures. Based on the error logs and similar cases in the Toradex community, here’s how to resolve this:

Immediate Steps to Fix the Connection Issue

1. Clear WSL State and Restart

First, completely shutdown WSL and restart it (1):

wsl --shutdown

(1)

Then restart your WSL environment and try launching VS Code again.

2. Check Docker Configuration

The usermod error suggests permission issues with the Docker service (1). Ensure Docker is running properly in WSL (2):

sudo service docker status
sudo service docker start

(2)

3. Verify WSL Extension Installation

Make sure you’re connecting to WSL properly (2):

  1. Press F1 in VS Code (2)
  2. Search for wsl (2)
  3. Select WSL: Connect to WSL (2)

4. Check for Environment Variable Issues

The community has identified that DOCKER_HOST environment variables can cause similar connection issues (1). Check if this variable is set in your WSL environment:

printenv | grep DOCKER

(1)

If DOCKER_HOST is set, unset it:

unset DOCKER_HOST

(1)

5. Reinstall Extension Dependencies

If the above steps don’t work, try manually removing and reinstalling the Torizon extension (3). The extension will check necessary dependencies during first activation and prompt you to enter your sudo password (2).

Root Cause Analysis

The usermod error "cannot lock /etc/passwd; try again later" combined with WebSocket failures suggests that:

  1. WSL may have corrupted user permission files
  2. Docker daemon might not be properly initialized
  3. VS Code server components in WSL may be in an inconsistent state

Prevention

To avoid this issue in the future, ensure that Docker Engine is properly configured to run without root privileges as documented in the setup instructions (2)(4).

If these steps don’t resolve the issue, you may need to completely reset your WSL distribution and reinstall the development environment following the setup guide (2).

Best regards, Toradex AI Assistant.

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