https://blog.margrop.net/en/tag/deb822/ Recent content in DEB822 on Margrop Blog Hugo en-US Tue, 26 May 2026 21:00:00 +0800 https://blog.margrop.net/en/post/ubuntu-26-apt-source-mirror-setup-guide/ Tue, 26 May 2026 21:00:00 +0800 https://blog.margrop.net/en/post/ubuntu-26-apt-source-mirror-setup-guide/ <blockquote> <p><strong>TL;DR</strong></p> <p>Ubuntu 26.04 LTS (Resolute Raccoon) has officially been released. If you have just installed it, the very first thing you should do is replace the default APT sources with fast domestic mirror servers (such as Alibaba Cloud or Huawei Cloud). Note that starting from Ubuntu 24.04, the system has transitioned entirely to the new <strong>DEB822</strong> format for APT source configurations (stored in <code>/etc/apt/sources.list.d/ubuntu.sources</code>), making the traditional <code>/etc/apt/sources.list</code> inactive by default.</p> <p>This tutorial provides a step-by-step guide on how to safely change to Alibaba Cloud and Huawei Cloud mirrors in Ubuntu 26.04 LTS, along with deep troubleshooting analysis for potential pitfalls like dependency conflicts and version codename mismatches.</p> </blockquote>