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Steam Client Fails to Start When Network Is Not Ready During Boot

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
linux
Domain
operating-systems

Research direction

The issue points to a systemd service dependency race condition. Examine the Steam client's systemd service unit file, likely in /usr/lib/systemd/system or /etc/systemd/system. Check its dependencies against network-online.target and the specific network device ensp01. Understand systemd's network target and device units. 'Done' means modifying the service to ensure it starts after the network is ready, testing the boot sequence, and verifying Steam launches reliably.

Written by the indexing model from the issue text.

Description

Steam Client Fails to Start When Network Is Not Ready During Boot

SteamOS Version
  • SteamOS BETA Effects: 3.8.26-28
  • Opted into Steam client beta?: Yes
  • Opted into SteamOS beta?: Yes
  • Have you checked for updates in Settings > System?: Yes
Hardware
Configuration
  • SteamOS is configured to boot directly into Desktop Mode.
  • Steam Client is configured to launch automatically during boot.
Issue

On approximately 2 out of 10 boots, the Steam Client fails to launch automatically.

Reviewing the system logs suggests that the network device used for Internet connectivity, ensp01, is not ready when the Steam Client attempts to start. The network device becomes available later during the boot process, but Steam does not retry its startup.

When this occurs, Steam also fails to open when launched manually.

Steps to Reproduce
  1. Configure SteamOS to boot directly into Desktop Mode.
  2. Configure Steam Client to open automatically at startup.
  3. Reboot the system repeatedly.
  4. On some boots, observe that the network device is not ready when Steam attempts to launch.
  5. Wait for the network device to become available.
  6. Attempt to launch Steam manually.
Expected Behavior

Steam should launch successfully after the network becomes available.

If the network is not ready during the initial startup attempt, Steam should either:

  • Wait for the network to become available; or
  • Retry launching automatically after network connectivity is established.
Actual Behavior
  • Steam fails to launch automatically.
  • The ensp01 network device becomes available later.
  • Steam does not recover or retry startup.
  • Steam cannot be opened manually during the affected session.
  • A full operating system reboot is required.
Reproduction Rate

Approximately 2 out of 10 boots.

Workaround

Rebooting the operating system resolves the issue in most cases.

Possible Cause

This appears to be a startup-order or network-readiness race condition between the network device and the Steam Client.

Possible Fix

The Steam systemd service could be configured to wait for the network to be fully available before starting. This may involve adding a dependency on network-online.target and ensuring that the relevant network device is ready.

Alternatively, Steam could automatically retry startup if the network is unavailable during the initial launch.

Additional Information

I am a DevOps Engineer and Certified Linux Engineer. System-log analysis indicates that ensp01 is detected after the Steam Client startup attempt on affected boots. if i get further logs that are not rotated will share in this report

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