Unthemed and unscaled titlebars for server-side decorations in GNOME 44 Xorg sessions

[Francois Thirioux]

Hi,

Nvidia 530 (graphics ppa), dGPU mode, GS 44, Lunar

X1 session:
If I launch Synaptic or ChessX, eg., the title bar is Adwaita-styled (greyish + icons).
No issue with GNOME apps (and some other like FF or TB snaps, etc.).

Wayland session:
all is ok (except many other bugs!)

[Francois Thirioux (fthx)]

Using a 200 % scaled 4K display, I see that the header bars of these buggy apps is small and not scaled (I mean fonts AND header bar itself). GNOME apps are themed and scaled as intended.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Are we missing custom theming in Yaru for mutter-x11-frames in GNOME 44?

[Paul (jupiter007)]

I can confirm the problem, but I have no idea of the reason why this happens.
We didn't changed anything related to this.
Maybe something new we miss?

[Daniel van Vugt (vanvugt)]

Looks like there's a whole new X11 window manager (separate process) called mutter-x11-frames in 44. I don't know the details.

[Marco Trevisan (Treviño) (3v1n0)]

Yeah, I've been looking into this some weeks ago already, but I feel it's something yaru could handle (even though my first attempts were failing)

Paul: Main change is that now those frames are gtk4 windows, using a GtkHeaderBar, but I'm not sure how that is different from normal ones.

However, gtk inspector can be used with:

❯ pkill -f /usr/libexec/mutter-x11-frames
❯ GTK_DEBUG=interactive /usr/libexec/mutter-x11-frame

[Marco Trevisan (Treviño) (3v1n0)]

Looking better I think there are two bugs, one is in mutter the other is in yaru where the look of these decorations isn't fully themed to be consistent with others.

[Marco Trevisan (Treviño) (3v1n0)]

Mutter issue is handled in https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2948

Yaru changes in https://github.com/ubuntu/yaru/pull/3884

[Launchpad Janitor (janitor)]

This bug was fixed in the package yaru-theme - 23.04.3-0ubuntu1

---------------
yaru-theme (23.04.3-0ubuntu1) lunar; urgency=medium

  [ Marco Trevisan (Treviño) ]
  * meson: Release 23.04.3
  * icons/meson: Explicitly list the icons pointing to wrong locations
  * icons/meson: Remove symbolic links for flavours
  * tweaks: Use consistent size for default decoration window buttons
    (LP: #2012733, #2013271)
  * tweaks: Use consistent horizontal margin for window buttons
  * icons: Optimize symbolic icons
  * icons: Update rendered icons and symlinks

  [ Paul Kepinski ]
  * Add missing folds on libreoffice-oasis-formula icon

 -- Marco Trevisan (Treviño) <email address hidden> Tue, 04 Apr 2023 21:56:24 +0200

[Launchpad Janitor (janitor)]

This bug was fixed in the package mutter - 44.0-2ubuntu3

---------------
mutter (44.0-2ubuntu3) lunar; urgency=medium

  * debian/patches: Listen to XSettings changes to update decorations
    (LP: #2012733)

 -- Marco Trevisan (Treviño) <email address hidden> Tue, 04 Apr 2023 22:26:20 +0200