fleet/changes/31291-linux-lock-script
Victor Lyuboslavsky 6f986e5574
On lock, drop GDM Ubuntu into text mode to work around blank/unresponsive screen. (#32100)
Fixes #31291 

# Checklist for submitter

- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files)
for more information.

## Testing
- [x] QA'd all new/changed functionality manually


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- New Features
- Linux lock now switches Ubuntu + GDM systems to text mode to avoid GUI
issues.
  - Persistent lock message is shown and survives reboots.
  - Unlock restores the original GUI mode automatically when applicable.

- Bug Fixes
- Prevents black-screen behavior on Ubuntu + GDM after locking by
rebooting to text mode.
  - Ensures lock message consistently appears across sessions.
  - Improves reliability of session handling during lock/unlock.

- Chores
  - Added change note describing the updated Linux lock behavior.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2025-08-21 13:55:00 -05:00

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Linux lock script on Ubuntu with GDM now switches UI to text mode to work around GUI issues.