The GNOME Screenshot app has ceased to function in Ubuntu 25.10 with GNOME 49, and this change is an intentional decision rather than a bug. The app’s removal of access to the private screen capture API was made due to the existence of a built-in screenshot feature in GNOME Shell, which was introduced in 2022.
GNOME developers argue that there is no valid reason to continue supporting the standalone app separately from other third-party screenshot tools. With GNOME Shell’s interactive screenshot feature accessible via the Quick Settings menu or keyboard shortcuts, the need for the old application has become obsolete.
The standalone GNOME Screenshot app, which hasn’t been part of the GNOME core software since 2022, is no longer maintained. While it can still be found in the repositories, users who try to utilize it will encounter an "unable to capture a screenshot, all possible methods failed" error, whether they are using the GUI or command-line interface.
Historically, many users—including writers and bloggers—have relied on GNOME Screenshot for its unique features, such as a delay timer that the built-in feature lacks. While the integrated tool captures screenshots instantly when triggered, it doesn’t offer the same flexibility for scheduling captures.
This decision is particularly impactful for users operating under Wayland in GNOME 49, as the application may still function correctly in different desktop environments or with alternative display servers.
For further details, refer to GNOME 49 and Ubuntu 25.10.