Mir release 2.18.0

Mir
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We’re pleased to announce the release of Mir 2.18.0. This includes bugfixes and improvements in a number of areas.

Input configuration

The main configuration file can now be used to configure input devices such as mice and touchpads. It is also possible (but not yet convenient) for compositors to update this configuration at runtime.

Support for downstream “desktop environments”

Many of you will have heard of Miracle-WM and Miriway, these are “desktop environments” that use Mir to provide the Wayland compositor. These will benefit from support for the viewport, fractional scaling and decorations Wayland extensions; support for modifier key LEDs; and, better cursor transitions between outputs.

New contributors

This release sees a contribution from @ehopperdietzel!

Changelog

ABI summary:

  • mircommon ABI bumped to 10
  • mirplatform ABI bumped to 29

Enhancements:

  • Move to 24.04 as the development focus (#3374)
  • Implement a more principled GraphicBufferAllocator selector (#3402)
  • Add input configuration options (#3415)
  • Provide a listener for dim/screen off notifications and wiring it through miral (#3405)
  • Resolve snap desktop files using app armor as the primary source (#3426)
  • Wayland server side decorations (#3425)
  • Add Wayland decorations strategy (#3454)
  • wp_viewporter support (#3445)
  • Enable keyboard LEDs when the modifier state changes (#3441)
  • x11-kiosk (#3460)
  • ci: replace codecov with TICS (#3485)
  • ci: enable AddressSanitizer (#3026)
  • Add support for wp_fractional_scale_v1 (#3509)
  • Allow servers to dynamically update input configuration

Documentation:

  • Add Mir’s CI documentation (#3434)
  • Explanation of how libraries depend on one another (#3469)
  • Draft a new Mir tutorial (#3496)
  • Add a threat model diagram for Ubuntu Frame (#3484)

Bugs fixed:

  • Alt key sometimes getting stuck after Alt+Tab (#3307)
  • Alt+` is confusing Firefox (#3379)
  • Fix cross-GPU imports (#3401)
  • Alt+Tab restores minimized windows, even if they don’t end up focused (#3323)
  • Don’t re-send wl_output.geometry if unchanged (#3414)
  • Abrupt cursor transition between outputs. (#3449) (thanks @ehopperdietzel!)
  • mir_kiosk_x11 crashes when the host platform has no outputs (#3427)
  • Screenshots no longer respect output scale (#3461)
  • Mir should respect flags from DEB_BUILD_MAINT_OPTIONS (LP#2073451)
  • Fix x11 rendering when scaled fractional scaling (#3508, #3554)
  • wbg constantly resizing after switching to 2.17.0 (#3450)
  • Decorations Eat Into Application Area (#3572)
  • Fix toplevel window resize pingpong. (Fixes #3573)

Mir 2.18.0 is available as a source tarball and the Mir PPAs.

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