Bug#1088677: powerdevil: Powerdevil does not change screen brightness when switching from AC to battery

[Sönke <s.huels@gmx.net>]

Package: powerdevil
Version: 4:6.2.3-1
Severity: normal
X-Debbugs-Cc: s.huels@gmx.net

Dear Maintainer,

after upgrading to Plasma Desktop 6.2.3 and thereby powerdevil 6.2.3,
powerdevil does not adjust the screen brightness any more when changing
from AC to battery power. The option is still enabled in the GUI. I have
tried removing and re-generating powerdevil config files in .config.
I observe this regression from 5.27.11 on both of my devices.
Please let me know if I can provide any additional information.

Thanks and best regards,
Sönke

$cat .config/powerdevilrc 
[AC][Display]
DisplayBrightness=75
UseProfileSpecificDisplayBrightness=true

[AC][SuspendAndShutdown]
AutoSuspendIdleTimeoutSec=1800
SleepMode=3

[Battery][Display]
DisplayBrightness=20
UseProfileSpecificDisplayBrightness=true

[Battery][SuspendAndShutdown]
AutoSuspendIdleTimeoutSec=300
SleepMode=3

[LowBattery][Display]
DisplayBrightness=5

[LowBattery][SuspendAndShutdown]
AutoSuspendIdleTimeoutSec=120
SleepMode=2

$journalctl -b | grep org\.kde\.powerdevil\.backlight
date time host dbus-daemon[880]: [system] Activating service name='org.kde.powerdevil.backlighthelper' requested by ':1.62' (uid=1000 pid=2024 comm="/usr/lib/x86_64-linux-gnu/libexec/org_kde_powerdev") (using servicehelper)
date time host org.kde.powerdevil.backlighthelper[2178]: Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
date time host dbus-daemon[880]: [system] Successfully activated service 'org.kde.powerdevil.backlighthelper'
date time host dbus-daemon[880]: [system] Activating service name='org.kde.powerdevil.backlighthelper' requested by ':1.62' (uid=1000 pid=2024 comm="/usr/lib/x86_64-linux-gnu/libexec/org_kde_powerdev") (using servicehelper)
date time host org.kde.powerdevil.backlighthelper[4902]: Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
date time host dbus-daemon[880]: [system] Successfully activated service 'org.kde.powerdevil.backlighthelper'
date time host dbus-daemon[880]: [system] Activating service name='org.kde.powerdevil.backlighthelper' requested by ':1.62' (uid=1000 pid=2024 comm="/usr/lib/x86_64-linux-gnu/libexec/org_kde_powerdev") (using servicehelper)
date time host org.kde.powerdevil.backlighthelper[5134]: Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
date time host dbus-daemon[880]: [system] Successfully activated service 'org.kde.powerdevil.backlighthelper'


-- System Information:
Debian Release: trixie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.11.10-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages powerdevil depends on:
ii  libc6                                  2.40-3
ii  libcap2-bin                            1:2.66-5+b1
ii  libkf6authcore6                        6.6.0-1
ii  libkf6configcore6                      6.6.0-2
ii  libkf6coreaddons6                      6.6.0-2
ii  libkf6crash6                           6.6.0-1
ii  libkf6dbusaddons6                      6.6.0-1+b1
ii  libkf6globalaccel6                     6.6.0-1
ii  libkf6i18n6                            6.6.0-2
ii  libkf6idletime6                        6.6.0-1
ii  libkf6kcmutilscore6                    6.6.0-2
ii  libkf6kcmutilsquick6                   6.6.0-2
ii  libkf6runner6                          6.6.0-1
ii  libkf6screen8                          4:6.2.3-1
ii  libkf6screendpms8                      4:6.2.3-1
ii  libkf6service-bin                      6.6.0-1
ii  libkf6service6                         6.6.0-1
ii  libkf6solid6                           6.6.0-1
ii  libkf6xmlgui6                          6.6.0-1+b1
ii  libkirigamiplatform6                   6.6.0-2
ii  libkscreen-bin                         4:6.2.3-1
ii  libkworkspace6-6                       4:6.2.3-3
ii  libpowerdevilcore2                     4:6.2.3-1
ii  libqcoro6dbus0t64                      0.11.0-1
ii  libqt6core6t64 [qt6-base-private-abi]  6.7.2+dfsg-4
ii  libqt6dbus6                            6.7.2+dfsg-4
ii  libqt6gui6                             6.7.2+dfsg-4
ii  libqt6qml6                             6.7.2+dfsg-11
ii  libqt6quick6                           6.7.2+dfsg-11
ii  libstdc++6                             14.2.0-8
ii  powerdevil-data                        4:6.2.3-1

Versions of packages powerdevil recommends:
pn  power-profiles-daemon  <none>
ii  systemsettings         4:6.2.3-1

powerdevil suggests no packages.

-- no debconf information