Release 2.4.0

Mir
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We’ve been improving our interfaces for graphics platforms to make them more suitable for use on hybrid systems. There’s more work to do on that front, but the new driver-quirks configuration option has proved useful in bringing up some devices.

There are a lot of “papercut” fixes to our Wayland and Xwayland support and we’ve made a number of improvements to our “Mir on X” platform.

Changelog

ABI summary:

  • mirserver ABI bumped to 55
  • mirplatform ABI bumped to 22

Enhancements:

  • Make attached surfaces respect exclusive zones
  • split mg::Platform into DisplayPlatform and RenderingPlatform
  • [gbm-kms] Add --driver-quirks option to avoid probing devices where probing crashes
  • [Wayland] Respect --enable-key-repeat with Wayland
  • [Wayland] Send timestamps with frame done event
  • [Wayland] Send timestamps with frame done event
  • [X11 platform] Add hostname to title when remote over X-forwarding (Fixes #1889)
  • [X11 platform] Port from XLib to XCB
  • [X11 platform] Don’t clamp Mir-on-X window size
  • [X11 platform] Allow resizing Mir-on-X windows

Bugs fixed:

  • Keep track of past surface states (Fixes #1979)
  • Place popups on output their anchor is on (Fixes #1408)
  • [mirplatform] Fix mirplatform.pc include dirs
  • [X11 platform] Fix cursor position on scaled outputs (Fixes #2034)
  • [X11 platform] Handle key state changes when window is not focused (Fixes #2029)
  • [XWayland] Gracefully handle XWayland errors (Fixes #1969)
  • [Wayland] Send bufferless frame callbacks after timeout (Fixes #1967)
  • [Wayland] Fix resize of layer shell surfaces (Fixes #1986)
  • [Wayland] Check for locked cursor before sending pointer movement
  • [Wayland platform] Precise (floating point) pointer events. (Fixes #1852)
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I’ve pushed out Mir 2.4.0 to Fedora 33, 34 and Rawhide. It should show up in the next day or so, depending on mirror sync latency.

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