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

[Anders Kaseorg]

[ Impact ]

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).

[ Test case ]

- From gnome-control-center display panel, enable the Night Light
- Force it on, and ensure that the display color temperature increases

[ Regression potential ]

Display gamma value might be incorrect

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

[Launchpad Janitor (janitor)]

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

[Bickhaus (bickhaus)]

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 Bícha (jbicha)]

No problem, I changed it back for you. 😃

[Jean-Christophe Baptiste (jc-baptiste)]

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

[Jean-Christophe Baptiste (jc-baptiste)]

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

[Daniel van Vugt (vanvugt)]

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

[Daniel van Vugt (vanvugt)]

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

[Launchpad Janitor (janitor)]

This bug was fixed in the package mutter - 3.34.1+git20191022-2ubuntu1

---------------
mutter (3.34.1+git20191022-2ubuntu1) focal; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
    + 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 (3.34.1+git20191022-2) unstable; urgency=medium

  * debian/patches: Update X11 focus before display focus:
    - Fixes an infinite loop causing an hang when showing the "application is
      not responding" dialog (LP: #1845302)

mutter (3.34.1+git20191022-1) unstable; urgency=medium

  * New upstream snapshot release
    + Fix night mode in wayland session (LP: #1847551)
    + Don't emit key-focus-out events on destroyed actors (LP: #1848119)
    + Fix an headers syntax error (LP: #1841709)
    + backends: Update inhibited state for the monitor and respect that state
    + clutter-backend-x11: Don't push keymap events to clutter
    + Fix drag and drop for applications in wayland
    + Avoid X11 roundtrips on underscanning checks

mutter (3.34.1-3) unstable; urgency=medium

  * Bump meson test timeout multiplier from 4 to 6 for armel

 -- Iain Lane <email address hidden> Fri, 25 Oct 2019 18:07:31 +0100

[Alberto Donato (ack)]

Is the fig going to be backported to Eoan?

[Jeremy Bícha (jbicha)]

Yes, there is a new mutter version that needs to be accepted by the Ubuntu Stable Release Team and then it will be built as a proposed update.

[MrTux (mrtux)]

A half of month and I'm still waiting for eoan release fix

[Marco Trevisan (Treviño) (3v1n0)]

Unfortunately due to a 3.34.1 git snapshot regression (https://gitlab.gnome.org/GNOME/mutter/issues/896, fixed now) we had to delay this upload, but the upload is in queue for few days now.

[Brian Murray (brian-murray)]

Hello Anders, or anyone else affected,

Accepted mutter into eoan-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/mutter/3.34.1+git20191107-1ubuntu1~19.10.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-eoan to verification-done-eoan. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-eoan. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Anurag Soni (anuragsoni-13)]

Hi Brian,

I enabled the eoan-proposed repository and on upgrading mutter + libmutter-5-0 I am able to use Night light and change color profiles again.

Thanks,
Anurag

[darkrain42 (darkrain42)]

I can also confirm this is fixed after upgrading mutter / libmutter-5-0 to 3.34.1+git20191107-1ubuntu1~19.10.1.

Thank you!

[MrTux (mrtux)]

I confirmed problem fixed after upgrade to mutter / libmutter-5-0 3.34.1+git20191107-1ubuntu1~19.10.1.

[Paul W (pbryanw)]

Hi, I'm new to Ubuntu bug testing, so hopefully I've done this correctly.

I can confirm the problem has been fixed, after upgrading to mutter / libmutter-5-0 3.34.1+git20191107-1ubuntu1~19.10.1. (via aptitude). Thank you.

[Owen Williams (ywwg)]

Can also confirm the issue is fixed with the -proposed package

[Launchpad Janitor (janitor)]

This bug was fixed in the package mutter - 3.34.1+git20191107-1ubuntu1~19.10.1

---------------
mutter (3.34.1+git20191107-1ubuntu1~19.10.1) eoan; urgency=medium

  * Backport to eoan.
  * debian/control, debian/gbp.conf: Update VCS branch to ubuntu/eoan

mutter (3.34.1+git20191107-1ubuntu1) focal; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
    + 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 (3.34.1+git20191107-1) unstable; urgency=high

  * New upstream snapshot
    - Fixes a regression from the previous upload, which caused a hang when
      interacting with the desktop icons.
  * x11-Update-X11-focus-before-updating-MetaDisplay-focus.patch: Drop. This
    was a cherrry-pick that is included in this snapshot.
  * debian/libmutter-5-0.symbols: Add new symbol in this snapshot

mutter (3.34.1+git20191022-2ubuntu1) focal; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
    + 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 (3.34.1+git20191022-2) unstable; urgency=medium

  * debian/patches: Update X11 focus before display focus:
    - Fixes an infinite loop causing an hang when showing the "application is
      not responding" dialog (LP: #1845302)

mutter (3.34.1+git20191022-1) unstable; urgency=medium

  * New upstream snapshot release
    + Fix night mode in wayland session (LP: #1847551)
    + Don't emit key-focus-out events on destroyed actors (LP: #1848119)
    + Fix an headers syntax error (LP: #1841709)
    + backends: Update inhibited state for the monitor and respect that state
    + clutter-backend-x11: Don't push keymap events to clutter
    + Fix drag and drop for applications in wayland
    + Avoid X11 roundtrips on underscanning checks

mutter (3.34.1-3) unstable; urgency=medium

  * Bump meson test timeout multiplier from 4 to 6 for armel

 -- Iain Lane <email address hidden> Thu, 07 Nov 2019 12:23:49 +0000

[Łukasz Zemczak (sil2100)]

The verification of the Stable Release Update for mutter has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[MegaBrutal (qbu6to)]

Thanks for the fix, it solved my issue too! :)

[Guillaume Michaud (gfmichaud)]

I don't know why... The fix worked until yesterday, but the problem has come back!

guillaume@massada:~$ dpkg -l |grep -i mutter
ii gir1.2-mutter-5:amd64 3.34.1+git20191107-1ubuntu1~19.10.1 amd64 GObject introspection data for Mutter
ii libmutter-5-0:amd64 3.34.1+git20191107-1ubuntu1~19.10.1 amd64 window manager library from the Mutter window manager
ii mutter 3.34.1+git20191107-1ubuntu1~19.10.1 amd64 Example window manager using GNOME's window manager library
ii mutter-common 3.34.1+git20191107-1ubuntu1~19.10.1 all shared files for the Mutter window manager

[Guillaume Michaud (gfmichaud)]

Apologies: it works. But it looks like that GNOME thinks that 8pm is not night here in western Europe, at this time of year! :-D