debcrafters-packages team mailing list archive

[Jeremy Bícha <2082017@xxxxxxxxxxxxxxxxxx>]

We kept the ngl renderer for Ubuntu 25.04 which aligned with Debian 13
"Trixie". It feels like enough issues have been fixed with the vulkan
renderer that we'll be dropping our override for Ubuntu 25.10. We
welcome more feedback if there are things that are still not working
well with the gtk4 default renderer.

** Changed in: gtk4 (Ubuntu)
       Status: Fix Released => Fix Committed

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https://bugs.launchpad.net/bugs/2082017

Title:
  Consider reverting to ngl renderer for oracular

Status in gtk4 package in Ubuntu:
  Fix Committed

Bug description:
  Background
  ----------
  gtk4 switched their default renderer to ngl for the 4.14 series, included in Ubuntu 24.04 LTS and they switched the default render again to vulkan for the 4.16 series included in Ubuntu 24.10.

  This was preannounced here:
  https://blog.gtk.org/2024/01/28/new-renderers-for-gtk/

  We were unable to get a prerelease of gtk4 4.16 into Debian before
  4.16.0 was released and there has been only limited end user testing
  of the vulkan renderer used in gtk 4.16.

  Historically, the Ubuntu Desktop team has only done limited bugfix
  SRUs of GTK to non-LTS releases. There's not a policy against it at
  all; it's just been a tradeoff with limited capacity and too many
  things to do.

  This is a proposal to switch back to the ngl renderer for Ubuntu 24.10
  to approximately match what is used in Ubuntu 24.04 LTS. For Ubuntu
  25.04, we would go back to using gtk4's default renderer (vulkan).

  Intel
  -----
  gtk4 is working fine for me on Intel graphics on a laptop from a few years ago. But there have been issues for people who use other graphics drivers.

  Open Issues
  -----------
  https://gitlab.gnome.org/GNOME/gtk/-/issues/?label_name%5B%5D=Vulkan%20Renderer

  Timing
  ------
  If we are going to make a switch, we need to do it very soon (this week or by Monday) because we are late in the Ubuntu 24.10 release process.

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