Diagnosing and Fixing Ubuntu Unattended‑Upgrades Failures
Diagnose and resolve failures in Ubuntu's unattended‑upgrades service, covering lock contention, network issues, stale APT lists, and configuration errors for LTS releases.
ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Diagnose and resolve failures in Ubuntu's unattended‑upgrades service, covering lock contention, network issues, stale APT lists, and configuration errors for LTS releases.
Stop guessing between apt and apt-get. Learn when to use the user-friendly interface for manual tasks and the stable CLI for automation to avoid broken Debian scripts.
Debian stable freezes package versions, which is great until you need a newer kernel or tool. Backports lets you opt in to newer software per package without destabilizing the base system — here's how to do it safely, and the security trade-off to weigh.
I have a Dockerfile that attempts to install the package google-chrome-stable among other packages in Ubuntu (v16 Xenial I think) as part of a Gitlab pipeline step. I have had no issues until recently, when the step started failing with this issue: Some packages could not be installed. This may mean that you have requested an impossible situation or if you a
During a Debian distribution upgrade, the system relies on the interaction between the APT dependency resolver and the dpkg status database located in /var/lib/dpkg/status . When an upgrade is interrupted mid-process, the system often enters a state where packages are unpacked but not yet configured. While dpkg --configure -a and apt-get install -f are docum
In the quest for ever smaller Docker images, it's common to remove the apt (for Debian/Ubuntu based images) cache after installing packages. Something like RUN rm -rf /var/lib/apt/lists/* I've seen a few Dockerfile s where this is done after each package installation ( example ), i.e. with the pattern # Install some package RUN apt-get update \ && ap
I was use command sudo sh -c 'echo "deb https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/$(lsb_release -cs) pgadmin4 main" > /etc/apt/sources.list.d/pgadmin4.list && apt update' But I was got this Err:2 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/n/a pgadmin4 Release 404 Not Found [IP: 87.238.57.227 443] Hit:3 https://community-packages
On Raspberry Pi OS (Debian-based, bookworm assumed), an apt install or full-upgrade can fail with a Hash Sum mismatch error when the local package index under /var/lib/apt/lists no longer matches the repository's current Release and Packages metadata. The apt toolchain only refreshes this index when apt update runs; it does not check freshness automatically
answered · 12 Jun 2025, 04:33 UTC