Mutter 3.34.1 broke Night Light, screen color profiles in Wayland sessions

Bug #1847551 reported by Anders Kaseorg on 2019-10-09
32
This bug affects 6 people
Affects Status Importance Assigned to Milestone
Mutter
Fix Released
Unknown
mutter (Ubuntu)
High
Daniel van Vugt

Bug Description

Upgrading Mutter 3.34.0 to 3.34.1 has broken Night Light and screen color profile switching. The commit at fault is 104bdde746c9ceccd9e9ab09b22ef228b8f7026e “kms: Predict state changes when processing update” (which was intended to fix LP bug 1847044).

Upstream issue: https://gitlab.gnome.org/GNOME/mutter/issues/851

Related branches

Changed in mutter:
status: Unknown → New
tags: added: eoan regression-release rls-ee-incoming
Launchpad Janitor (janitor) wrote :

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

Changed in mutter (Ubuntu):
status: New → Confirmed
tags: added: fixed-in-3.34.2 fixed-upstream
Changed in mutter (Ubuntu):
importance: Undecided → High
status: Confirmed → Triaged
Changed in mutter:
status: New → Fix Released
tags: removed: rls-ee-incoming
Bickhaus (bickhaus) on 2019-10-15
Changed in mutter (Ubuntu):
status: Triaged → Confirmed
Bickhaus (bickhaus) wrote :

Apologies for changing status from triaged to confirmed. That was not my intention. Next time I get an email about a bug update, I'll wait to get to my pc, rather than checking on mobile.

Jeremy Bicha (jbicha) wrote :

No problem, I changed it back for you. 😃

Changed in mutter (Ubuntu):
status: Confirmed → Triaged

Is there a testing package including the fix that we could test please?

It has been fixed in Fedora and Arch, where is the fix for Ubuntu?

Daniel van Vugt (vanvugt) wrote :

Looks like this bug only affects Wayland sessions. So to avoid it just log into "Ubuntu" instead, to get Xorg.

summary: - Mutter 3.34.1 broke Night Light, screen color profiles
+ Mutter 3.34.1 broke Night Light, screen color profiles in Xorg sessions
summary: - Mutter 3.34.1 broke Night Light, screen color profiles in Xorg sessions
+ Mutter 3.34.1 broke Night Light, screen color profiles in Wayland
+ sessions
Daniel van Vugt (vanvugt) wrote :

Still, since this is the most popular eoan regression I've seen I will propose a fix.

Changed in mutter (Ubuntu):
assignee: nobody → Daniel van Vugt (vanvugt)
status: Triaged → In Progress
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