Themes and font settings don’t apply to X apps running in Wayland (g-s-d 3.33.90 → 3.33.92 regression)

Bug #1843107 reported by Anders Kaseorg on 2019-09-07
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Fix Released
gnome-settings-daemon (Ubuntu)
mutter (Ubuntu)
Iain Lane

Bug Description

After upgrading gnome-settings-daemon from 3.33.90-1ubuntu2 to 3.33.92-1ubuntu1, my GTK theme and font settings selected with gnome-tweaks are no longer applied to X11 applications when running in a Wayland session (I tried Firefox and Emacs). This seems to be because gsd-xsettings is not running.

Known workarounds:
• downgrade gnome-settings-daemon to 3.33.90-1ubuntu2 and reboot; or
• use Xorg instead of Wayland; or
• manually start /usr/lib/gnome-settings-daemon/gsd-xsettings.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: gnome-settings-daemon 3.33.92-1ubuntu1
Uname: Linux 5.2.11-050211-lowlatency x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
Date: Fri Sep 6 17:24:02 2019
InstallationDate: Installed on 2016-02-19 (1295 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160218)
SourcePackage: gnome-settings-daemon
UpgradeStatus: Upgraded to eoan on 2019-06-23 (75 days ago)

Anders Kaseorg (andersk) wrote :
Iain Lane (laney) wrote :

Thanks Anders. I'm hoping this is fixed by the patches from - if you're able to build your own gnome-shell package, maybe you could try those commits? Otherwise, we should get them in the distro shortly (this week).

Anders Kaseorg (andersk) wrote :

Hmm, I upgraded mutter from eoan-proposed and gnome-shell from eoan-proposed plus those three commits (, if you want to check my work), but it didn’t resolve the problem. Even after a reboot, gsd-xsettings doesn’t start and X11 applications don’t get themed.

$ dpkg-query -W gir1.2-mutter-5 libmutter-5-0 mutter mutter-common gnome-shell gnome-shell-common
gir1.2-mutter-5:amd64 3.33.92-1ubuntu1
gnome-shell 3.33.92-1ubuntu1andersk1
gnome-shell-common 3.33.92-1ubuntu1andersk1
libmutter-5-0:amd64 3.33.92-1ubuntu1
mutter 3.33.92-1ubuntu1
mutter-common 3.33.92-1ubuntu1

$ strings /usr/lib/gnome-shell/ | grep x11-display
        global.display.connect('x11-display-opened', () => {
        global.display.connect('x11-display-closing', () => {

$ systemctl --user status gsd-xsettings.service
● - GNOME session X11 services
   Loaded: loaded (/usr/lib/systemd/user/; static; vendor preset: enabled)
   Active: inactive (dead)

● - GNOME XSettings
   Loaded: loaded (/usr/lib/systemd/user/; static; vendor preset: enabled)
   Active: inactive (dead)

● gsd-xsettings.service - GNOME XSettings
   Loaded: loaded (/usr/lib/systemd/user/gsd-xsettings.service; static; vendor preset: enabled)
   Active: inactive (dead)

Anders Kaseorg (andersk) wrote :

By adding some debugging output to mutter and gnome-shell I verified that mutter emits the x11-display-opened signal before gnome-shell is able to connect a handler for it, and the handler never runs.

(Possibly things would be different in the experimental autostart-xwayland mode, but the whole system froze when I tried to log in with that enabled.)

Anders Kaseorg (andersk) wrote :

This is fixed by (I tested 850ef518795dcc20d3b9a4f661f70ff8d0ddacb2).

Changed in mutter:
status: Unknown → New
Changed in mutter:
status: New → Fix Released
Iain Lane (laney) on 2019-09-13
Changed in gnome-settings-daemon (Ubuntu):
status: New → Invalid
Changed in mutter (Ubuntu):
status: New → In Progress
assignee: nobody → Iain Lane (laney)
Iain Lane (laney) wrote :

Taken that patch, thanks!

Launchpad Janitor (janitor) wrote :

This bug was fixed in the package mutter - 3.34.0-2ubuntu1

mutter (3.34.0-2ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.34.0-2) experimental; urgency=medium

  * d/p/core-Split-x11-display-initialization-in-2-signals.patch: Cherry-pick.
    Fixes starting up of gsd-xsettings on Wayland. (LP: #1843107)

 -- Iain Lane <email address hidden> Fri, 13 Sep 2019 11:13:49 +0100

Changed in mutter (Ubuntu):
status: In Progress → Fix Released
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