LifeBytes Journal

By the end of this article readers will understand how Fedora 45’s scheduled test days structure community validation of major system components, what technical areas are being exercised, and how administrators can contribute reliable feedback to improve the upcoming release.

Why Fedora 45 Needs More Than Automated CI

Fedora’s development process relies heavily on continuous integration pipelines that automatically compile packages, run unit tests, and verify known code paths. While these mechanisms catch regressions in controlled scenarios, they cannot guarantee that the new boot.iso image boots on every laptop model, that enforced RPM signature checks do not interfere with niche workflows, or that peripheral drivers behave correctly under real‑world usage. The upcoming Fedora 45 release introduces several foundational updates—new GNOME 51 desktop components, RPM 6.1 enhancements, updated installation media, and upcoming KDE 6.7—each touching large portions of the stack. Because these changes affect boot loaders, package management, display servers, and localization frameworks, the Fedora QA team has opened “test days” that invite the broader community to run targeted test cases on physical hardware and virtual machines.

Structure of the Test‑Day Program

The test‑day model is organized around short, focused windows during which developers, QA engineers, and volunteers converge on a single change area. Each window is announced on the Fedora test‑days portal and is linked to a dedicated wiki page that lists concrete test cases. Participants are encouraged to use a Fedora account to submit results through the test‑day web application, which is itself open source and hosted on the Fedora Forge. Communication during the events occurs primarily on Matrix channels identified by tags such as #test-day:fedoraproject.org and specific hashtags (e.g., #GNOME_51_Desktop).

The schedule for the current cycle includes:

• GNOME 51 Desktop – 17 – 21 August: validation of the desktop environment, graphics stack, peripheral handling, and core applications.
• I18n Test Week – 7 – 13 September: coverage of input methods, locale data, and keyboard layout handling.
• RPM 6.1 – focus on NSS‑based user/group lookups, transaction‑time queries, new macro modifiers, and enhanced rpmkeys output.
• Installation Media – booting the new boot.iso and live images on diverse hardware and virtual platforms.
• KDE 6.7, Cockpit, GRUB EFI / Confidential Computing – each slated for a dedicated test day or grouped under broader hardware‑specific sessions.

The list remains open; additional components such as kmscon, OpenSSL 4.0, CoreOS, and Kernel 7.2 are under consideration. This flexible approach allows maintainers of large‑impact packages to propose ad‑hoc test days by filing tickets on the Fedora Forge and tagging them appropriately.

Technical Focus Areas and Their Impact

GNOME 51 Desktop Validation

GNOME 51 introduces updates to the Mutter compositor, Wayland session handling, and a suite of core applications. Because the desktop environment interacts directly with graphics drivers (NVIDIA, AMD, Intel), display managers, and input devices, test participants are asked to verify suspend/resume cycles, external monitor handling, and GPU‑accelerated rendering. Successful validation ensures that the default Fedora workstation experience remains stable across the wide range of laptops and workstations used by the community.

RPM 6.1 Enhancements

RPM 6.1 adds support for NSS‑backed user and group lookups, enabling queries against directory services during package transactions. It also introduces new macro modifiers that affect how spec files are interpreted, and improves the verbosity of rpmkeys verification output. Since RPM underpins every package installation, upgrade, and removal operation, any regression could affect system integrity. Testers are instructed to perform typical package management workflows—installing, updating, and removing packages—while observing the new verification messages and ensuring that NSS queries resolve correctly in environments that rely on external authentication sources.

Installation Media and Boot.iso

The boot.iso and accompanying live images are the primary entry points for new Fedora installations. The test day for installation media asks participants to boot the images on both physical hardware and virtual machines, checking for successful hardware detection, installer functionality, and live environment stability. Particular attention is given to Wi‑Fi provisioning, disk partitioning, and the ability to transition from the live session to a fully installed system without errors. Feedback from these tests directly influences the final release media, reducing the likelihood of installer failures for end users.

KDE 6.7 and Cockpit Sessions

Although the KDE test day is still being finalized, the inclusion of KDE 6.7 reflects Fedora’s commitment to providing a first‑class KDE Plasma experience. Testers will focus on the KDE framework, Plasma desktop, and associated system settings tools. The Cockpit test day, scheduled after a multi‑year hiatus, will examine the web‑based management interface’s ability to monitor services, manage storage, and handle user sessions across the updated stack.

GRUB EFI and Confidential Computing

GRUB’s EFI support and emerging confidential computing features are hardware‑specific concerns. The associated test day targets platforms that expose EFI firmware interfaces and those capable of running enclaves or other trusted execution environments. Participants with compatible hardware are encouraged to verify that the bootloader correctly loads the Fedora kernel, respects Secure Boot policies, and that any confidential computing extensions function as documented.

How Administrators Can Contribute Effectively

To participate, an administrator must have a Fedora account, which grants access to the test‑day web application and the relevant Matrix channels. The typical workflow consists of selecting an active test day from the schedule, reviewing the wiki‑hosted test cases, and executing them on a chosen platform—either a virtual machine for general cases or a physical system for hardware‑specific scenarios. After completing a test case, the participant records observations—success, failure, or unexpected behavior—through the web interface. If an anomaly is detected, the developer community is available on Matrix to assist with debugging, and the issue can be escalated to a bug report if necessary.

Administrators who maintain packages that undergo substantial changes in Fedora 45 are also invited to propose dedicated test days. This is done by filing a ticket on the Fedora Forge, tagging it with “test days,” and describing the intended test scope. By aligning package‑level changes with community testing, maintainers can surface regressions early and ensure that downstream distributions receive a stable foundation.

Practical Implications for Fedora Deployments

The structured test‑day approach provides several concrete benefits for production environments. First, it expands the test surface beyond automated pipelines, capturing edge‑case interactions that only manifest on specific hardware or in unique workflow configurations. Second, the real‑time feedback loop between testers, developers, and QA engineers accelerates issue resolution, reducing the time between regression detection and patch release. Third, the open nature of the test‑day app and its underlying ticketing system ensures transparency; administrators can trace reported problems, view discussion threads, and verify that fixes are incorporated before the final release.

For organizations that rely on Fedora as a workstation or server platform, participating in test days can be a low‑cost way to validate upcoming changes against their own hardware inventories. By running the prescribed test cases on representative machines, sysadmins can anticipate potential disruptions—such as installer failures on particular BIOS configurations or RPM signature verification issues in custom repository setups—and plan mitigations ahead of the official rollout.

In summary, Fedora 45’s test‑day program operationalizes community testing for high‑impact components, turning a broad user base into an extension of the QA process. Administrators and developers who engage with these events gain early insight into system behavior, contribute to a more stable release, and help shape the future reliability of the Fedora ecosystem.

Source: fedoramagazine.org

By the end of this article readers will understand how the upcoming Linux Mint kernel cleanup utility works, what configuration options it provides, and how it alters routine kernel maintenance for system administrators and power users.

Background: Kernel Proliferation on Desktop Systems

Linux distributions regularly ship new kernel packages to incorporate hardware support, security fixes, and performance improvements. On desktop‑oriented distributions such as Linux Mint, users often retain several kernel versions after each upgrade. This practice safeguards against regressions: if a newly installed kernel fails to boot, an older, known‑good version remains available in the boot menu.

The downside of this approach is disk consumption. Each kernel package includes the core image, modules, headers, and associated metadata, which can amount to several hundred megabytes per version. Over time, especially on systems with limited SSD capacity, the accumulation of obsolete kernels becomes a noticeable storage concern.

Historically, Linux Mint users have relied on the Update Manager or manual commands such as apt autoremove to prune old kernels. Those methods require manual intervention and lack fine‑grained control over which kernel series are retained.

Design of the New Kernel Cleanup Utility

The upcoming feature, teased by the Mint developers, moves kernel housekeeping out of the Update Manager and into the System Administration tool. Its core concept mirrors the approach already employed by Fedora: kernels are grouped by series, and administrators can define retention policies per series.

A “series” corresponds to a major kernel version line (for example, 5.15.x or 6.1.x). Within a series, the tool tracks individual iterations—each incremental release that the package manager makes available. The administrator configures two primary parameters for each series:

• Series selection: Choose which series are considered “known” and therefore eligible for automated handling.
• Retention count: Specify how many recent iterations of the selected series should be kept on the system.

Once the policy is defined, the utility runs on a weekly schedule. During each run it evaluates the installed kernels, compares them against the configured retention count, and removes the oldest packages that exceed the limit. The removal process uses the package manager’s standard mechanisms, ensuring that dependency metadata remains consistent.

An important exception applies to custom kernel series. If a user installs a kernel that does not belong to any known series—such as a manually compiled kernel or a third‑party build—the tool cannot automatically manage its lifecycle. In that case the utility emits a warning, indicating that responsibility for updates and cleanup rests with the user.

Integration with Meta‑Packages and Update Flow

When a series is marked as known, the utility also installs the corresponding meta‑package. Meta‑packages are dummy packages that depend on the latest kernel in a given series. By installing the meta‑package, the system ensures that future kernel updates for that series are pulled automatically through the regular update channel.

Because the cleanup tool operates independently of the Update Manager, the regular update workflow remains unchanged. Users continue to receive kernel updates as part of normal system upgrades; the new utility simply handles the post‑update housekeeping step.

Historical Record and Auditing

The utility includes a history feature that logs each removal operation. The log records the kernel version removed and the timestamp of the action. This audit trail provides administrators with visibility into kernel turnover, which can be useful for compliance checks or troubleshooting scenarios where a specific kernel version must be reinstalled.

Impact on System Administration Practices

The introduction of an automated, policy‑driven cleanup mechanism changes several routine tasks for Mint administrators:

• Reduced manual maintenance: The weekly automated run eliminates the need for periodic manual invocation of apt autoremove or similar commands to free disk space.
• Predictable storage usage: By defining explicit retention counts, administrators can forecast the maximum disk space consumed by kernel packages, aiding capacity planning on constrained devices.
• Consistent handling of series: Grouping kernels by series prevents scenarios where a newer minor release of one series is kept while older releases of another series are inadvertently removed, preserving a coherent set of fallback kernels.
• Clear responsibility for custom kernels: The warning mechanism ensures that users who rely on custom builds are aware that the automated tool will not intervene, prompting them to implement their own cleanup strategy.
• Auditability: The history log creates a verifiable record, which can be referenced when investigating boot failures that might be linked to recent kernel removals.

From a developer perspective, the tool’s reliance on meta‑packages aligns with existing packaging practices. Developers delivering kernel updates for a series need only maintain the meta‑package’s dependency list; the cleanup utility will automatically respect the series’ retention policy without additional scripting.

Comparison with Existing Fedora Mechanism

Fedora’s kernel cleanup approach has been in place for several releases, providing a mature reference implementation. Mint’s planned utility adopts the same series‑based model but integrates it into the System Administration GUI rather than a command‑line utility. This placement reflects Mint’s focus on a user‑friendly desktop experience while still offering the granularity expected by power users.

Both implementations share the principle of retaining a configurable number of recent kernels per series and automatically purging older ones. The key difference lies in the user interface: Mint’s tool will be accessible through the graphical administration panel, whereas Fedora typically relies on the dnf plugin dnf-automatic or similar scripts.

Operational Considerations for Deployments

Administrators planning to adopt the new utility should be aware of the following operational aspects:

• Initial configuration: The one‑time setup requires selecting the series to track and defining retention counts. Default values are expected to be provided, but adjusting them to match organizational policies is recommended.
• Weekly execution context: The cleanup runs on a weekly schedule. Administrators may need to ensure that the schedule aligns with maintenance windows, especially on systems where kernel removal could conflict with other automated tasks.
• Backup strategy: Although the tool removes only packages deemed unnecessary, maintaining a backup of the /boot directory or a snapshot of the root filesystem remains best practice before any automated removal, enabling rapid recovery if a retained kernel proves defective.
• Custom kernel handling: For environments that deploy custom kernels (e.g., for specialized hardware drivers), administrators must implement manual removal procedures or integrate the custom kernels into a known series by creating appropriate meta‑packages.

By addressing these considerations, administrators can integrate the cleanup utility into existing maintenance workflows without disrupting service continuity.

Future Outlook and Release Timeline

The kernel cleanup feature is slated for inclusion in the next Linux Mint release. While the exact version number is not disclosed in the source material, the announcement indicates that the functionality will be available as part of the standard system administration suite from that point forward. Early adopters of the upcoming beta releases will be able to evaluate the tool’s behavior and provide feedback before the feature reaches the stable channel.

In the broader context, the addition of automated kernel management reflects a trend among desktop‑focused distributions to reduce manual system upkeep while preserving the flexibility that power users expect. As kernel packages continue to grow in size and frequency, such tools become essential for maintaining optimal disk utilization without sacrificing the safety net of fallback kernels.

Source: linux-magazine.com