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Latest Entries

Why an External LUKS-Encrypted Drive Doesn't Show Free Space After Deleting Files

Deleting files on a LUKS-encrypted USB drive can leave `df` reporting no freed space even though the files are gone. This article explains the likely causes and walks through remounting, enabling discards, and running `f...

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Why Your HDMI Port Has No PCI Address for GPU Passthrough (and What to Pass Instead)

HDMI connectors are not separate PCI devices, so they never appear in lspci output. For passthrough you hand the entire GPU to the virtual machine, and this article explains how to find the right device and set it up in ...

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Restoring the Mirror Selector and Fixing "567 Unknown Status" Apt Errors on Ubuntu 24.04

Ubuntu 24.04 no longer ships the GUI mirror chooser by default, and a misconfigured sources file pointing at a foreign mirror or wrong release suite can break updates. Here is how to restore the mirror tool and repair yo...

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Migrating an mdadm Linear Array to RAID1: Why There Is No In-Place Conversion and What to Do Instead

mdadm cannot reshape a linear (concatenated) array into RAID1, regardless of how much free space exists. This article explains why the conversion is impossible and walks through safe migration strategies.

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AlmaLinux Modular Package Suffixes: Why +4012 vs +4013 Doesn't Determine CVE Fix Status

The +4012+cd64a238 tail on an AlmaLinux module package is a build index plus a module-identity hash, not a patch counter. Verify scanner findings against the vendor advisory and the full installed package identity.

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Rescue Your Data from a Failing NTFS Drive: Image It, Then Copy It

When an NTFS external drive develops thousands of bad sectors, choosing between a block-level image and a file-level copy determines whether your data survives. Here's how to do both safely on Linux.

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Ubuntu LTS Upgrade Fails with "Could Not Calculate the Upgrade": Find and Clear the Broken Packages

A release upgrade that aborts with "unable to evaluate the upgrade" is almost always caused by a few unsatisfiable packages. Learn to spot them in apt.log, remove them, and restore your sources after a failed attempt.

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Why Your USB 3.1 SD Card Reader Only Writes at 14 MB/s — and What Actually Determines the Speed

A UHS-I, V30-rated microSD card behind a SuperSpeed reader can still crawl along at 14 MB/s. The bottleneck is usually the card's flash memory and the file mix, not the USB link.

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Audacity Meter Moves but HDMI Audio Is Silent on Ubuntu: Fix the Audio Host or Replace the Snap

Audacity's meter moves but HDMI stays silent on Ubuntu because the app is using the wrong audio host. Switch to PulseAudio in Preferences, or replace the App Center Snap with the apt package.

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Give One Dolphin Folder Its Own Permanent Sort Order Without Customizing Everything Else

Dolphin can keep a single folder permanently sorted by modified date while every other folder stays on name, ascending — using the Apply to scope in view properties and a hidden .directory override.

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