Bug#966576: Night Light leaves screen warm-colored if sunrise happens with screen locked

[Josh Triplett]

Package: gnome-settings-daemon
Version: 3.36.1-1
Severity: normal
X-Debbugs-Cc: josh at joshtriplett.org

I use the Night Light feature to make the screen color warmer between
sunset and sunrise. Often, I'll lock the screen after sunset (when it's
currently warm-colored), and then in the morning, unlock it after
sunrise. When that happens, the screen remains warm, both on the lock
screen and after unlocking. Even toggling the Night Light setting does
not fix this; the screen color stays warm. The only thing I've found
that resets it is to disconnect and reconnect the monitor.

- Josh

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.7.0-2-amd64 (SMP w/4 CPU threads)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gnome-settings-daemon depends on:
ii  gnome-settings-daemon-common  3.36.1-1
ii  gsettings-desktop-schemas     3.36.1-1
ii  libasound2                    1.2.2-2.3
ii  libc6                         2.31-2
ii  libcairo2                     1.16.0-4
ii  libcanberra-gtk3-0            0.30-7
ii  libcanberra0                  0.30-7
ii  libcolord2                    1.4.4-2
ii  libcups2                      2.3.3-2
ii  libfontconfig1                2.13.1-4.2
ii  libgcr-base-3-1               3.36.0-2
ii  libgdk-pixbuf2.0-0            2.40.0+dfsg-5
ii  libgeoclue-2-0                2.5.6-1
ii  libgeocode-glib0              3.26.2-2
ii  libglib2.0-0                  2.64.4-1
ii  libgnome-desktop-3-19         3.36.4-1
ii  libgtk-3-0                    3.24.20-1
ii  libgudev-1.0-0                233-1
ii  libgweather-3-16              3.36.0-1
ii  liblcms2-2                    2.9-4+b1
ii  libmm-glib0                   1.14.0-0.1
ii  libnm0                        1.26.0-1
ii  libnotify4                    0.7.9-1
ii  libnspr4                      2:4.27-1
ii  libnss3                       2:3.55-1
ii  libpam-systemd [logind]       245.7-1
ii  libpango-1.0-0                1.44.7-4
ii  libpangocairo-1.0-0           1.44.7-4
ii  libpolkit-gobject-1-0         0.105-28
ii  libpulse-mainloop-glib0       13.0-5
ii  libpulse0                     13.0-5
ii  libupower-glib3               0.99.11-2
ii  libwacom2                     1.3-2
ii  libwayland-client0            1.18.0-1
ii  libx11-6                      2:1.6.9-2+b1
ii  libxext6                      2:1.3.3-1+b2
ii  libxi6                        2:1.7.10-1

Versions of packages gnome-settings-daemon recommends:
pn  iio-sensor-proxy   <none>
ii  pulseaudio         13.0-5
ii  x11-xserver-utils  7.7+8

Versions of packages gnome-settings-daemon suggests:
pn  usbguard  <none>

-- no debconf information