A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Ubuntu 17.04 (Zesty Zapus) was released on April 13, 2017, and was supported until January 13, 2018. Questions about unsupported versions are likely to be closed as off-topic.
Flash Players and Flash in general (the format etc). Use this tag if you have trouble enabling or installing Flash in Ubuntu.
For questions related to users, user accounts, user permissions or guest accounts.
the single account you use to log in to all services and sites related to Ubuntu. Previously, it was also a cross-platform synchronization service for files, contacts, notes, music and b…
the open source (BSD-licenced) web browser that Google Chrome is based on. Use this tag for questions about installing, configuring or using the free software Chromium browser, not the pro…
the icons that are located in the upper panel, doing things like estimating the battery level, displaying the current time, letting you adjust your volume, etc.
a company that provides cloud and virtualization products and services. Use this tag if you are using VMware's products along with the tag for the software you are using; either [vmwar…
Questions about Wubi, a way to dual boot Ubuntu and Windows without partitioning. However, it's been abandoned for years and is depreciated.
Questions about battery usage and issues in Ubuntu.
RAID stands for redundant array of independent disks, and allows for disks to be linked in various ways. Common RAID setups in Ubuntu are a hardware RAID, FakeRAID and software RAID.
Questions related to snap-package should be tagged here (ex. making a snap-package, issues, etc)
an open-source media player / transcoder / streaming server maintained by the VideoLAN organization.
For questions regarding storage drives that connect using a USB port.
Questions about improving the performance, speed, and/or overall system responsiveness of Ubuntu. Note that this is a general tag, and should be accompanied by another tag indicating what kind of perf…
in process of removal. If your software is freezing then you likely need to file a bug, as freeze problems are usually off topic here and will likely be closed.
Brand of graphics processing units from AMD, included with other manufacturers' graphics cards. Ask questions about configuring or troubleshooting in Ubuntu.
Questions about Intel products or technologies. Intel is one of the leading manufacturers of CPUs and motherboards as well as a host of other hardware.
Questions relating to Microsoft's Skype VOIP application and services.
Questions about managing/using repositories in general and about selecting Ubuntu repositories in particular. Most of the latter questions could be added under the "ppa" and "apt-get" tags as well.
Metal as a Service – MAAS – lets you treat physical servers like virtual machines in the cloud. Rather than having to manage each server individually, MAAS turns your bare metal into an elastic cloud-…
This non-LTS version of Ubuntu, code-named "Utopic Unicorn", was released on Oct. 23, 2014. It reached End-of-Life on July 23, 2015. Newer questions should be considered off-topic.
a form of computer data storage. Today, it takes the form of integrated circuits that allow stored data to be accessed in any order with a worst case performance of const…
a collection of daemons, libraries and tools for system management. Ubuntu's Upstart system was replaced with systemd starting with Ubuntu 15.04.
an open standard for document exchange.
For questions related to AMD graphic cards, their drivers and related problems.
Questions about the login screen, specifically customizing/troubleshooting it.
should be used for questions relating to desktop environments, and not a specific desktop environment such as Gnome Shell, KDE, XFCE, LXDE, Unity.
Unix systems, and other Unix-like operating systems, use the term "swap" to describe both the act of moving memory pages between RAM and disk, and the region of a disk the pages are stored on. In some…
A method of connecting to the internet through an intermediary (a proxy server) which handles connections and redirects them.
for questions regarding installing or using Ubuntu on Mac hardware. For questions about the hardware MAC address use the "networking" tag.
A Microsoft file system, used in Windows NT (2000, XP, Vista, 7, 8, 10)
CPU stands for Central Processing Unit, and is the main processing chip used in every computer. Brands include Intel, AMD and ARM. CPUs are commonly available in 32- and 64-bit, and come in a variety …
Questions related to email setup and troubleshooting. Most questions can be tagged with your email client (such as "thunderbird" or "evolution")
The etc/fstab file contains static file system information. It normally contains an entry for each partition name or UUID that lists the mount point, filesystem type and mount options.
a non-LTS version of Ubuntu. It reached End Of Life on July 20, 2017. Only use this tag if your question is version-specific.
Brand of laptop computers originally designed, manufactured and sold by IBM and now owned by Lenovo.