qmk/qmk_firmware

[Bug] `50-qmk.rules` Broken on systemd 258.

Open

#25,847 opened on Dec 2, 2025

View on GitHub
 (13 comments) (1 reaction) (0 assignees)C (43,867 forks)batch import
bughelp wanted

Repository metrics

Stars
 (20,368 stars)
PR merge metrics
 (Avg merge 20d 9h) (27 merged PRs in 30d)

Description

Describe the Bug

A change to systemd with version 258 seems to have broken a lot of people's udev rules, and now the provided udev rule file no longer works. I managed to solve this issue by finding someone in a similar situation and using their fix, but I don't know enough about udev rules or how things are supposed to work to propose a PR with this fix or any other potential fix. All I know is it seems this change by systemd is intentional and not being reverted anytime soon, so I thought to bring it up and hopefully help others avoid the headache I just spent all day figuring out.

Keyboard Used

No response

Link to product page (if applicable)

No response

Operating System

No response

qmk doctor Output

Is AutoHotKey / Karabiner installed

  • AutoHotKey (Windows)
  • Karabiner (macOS)

Other keyboard-related software installed

No response

Additional Context

No response

Contributor guide

Research direction
Examine the udev rules file at `util/udev/50 qmk.rules`, understand the systemd 258 changes that broke it, and implement the fix described in the Reddit post.
Tech stack
c
Domain
infrastructure
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Linuxudev
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70