Bug#1099775: xfce4-power-manager-plugins: To change brightness, you need to install "pkexec"

[Gert Robben <t3@gert.gr>]

Package: xfce4-power-manager-plugins
Version: 4.20.0-1
Severity: normal

Dear Maintainer,

After Bookworm -> Trixie upgrade, I couldn't change brightness anymore with the
hotkeys.

When running "xfce4-power-manager --debug" and pressing a hotkey, I saw:
TRACE[xfpm-brightness-polkit.c:160] xfpm_brightness_polkit_set_level():
Executing command: pkexec /usr/sbin/xfpm-power-backlight-helper --set-
brightness 1
TRACE[xfpm-brightness-polkit.c:164] xfpm_brightness_polkit_set_level(): Failed
to set value: Failed to execute child process “pkexec” (No such file or
directory)
Then I found that command in /usr/lib/x86_64-linux-
gnu/xfce4/panel/plugins/libxfce4powermanager.so , which belongs to xfce4-power-
manager-plugins.

I use network-manager, which in Bookworm depended on policykit-1, which depends
on pkexec.
But in Trixie it no longer depends on policykit-1, so (that and) pkexec got
autoremoved.
That's why in my case, it worked fine in Bookworm and broke in Trixie.

Thanks, Gert


-- System Information:
Debian Release: trixie/sid
  APT prefers testing
  APT policy: (900, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.12-amd64 (SMP w/2 CPU threads; PREEMPT)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=nl_NL.UTF-8, LC_CTYPE=nl_NL.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages xfce4-power-manager-plugins depends on:
ii  libc6                2.40-7
ii  libcairo2            1.18.2-2
ii  libglib2.0-0t64      2.83.4-1
ii  libgtk-3-0t64        3.24.48-4
ii  libpango-1.0-0       1.56.1-1
ii  libpangocairo-1.0-0  1.56.1-1
ii  libupower-glib3      1.90.7-1
ii  libwayland-client0   1.23.1-3
ii  libx11-6             2:1.8.10-2
ii  libxfce4panel-2.0-4  4.20.3-1
ii  libxfce4ui-2-0       4.20.0-1
ii  libxfce4util7        4.20.0-1
ii  libxfconf-0-3        4.20.0-1
ii  libxrandr2           2:1.5.4-1+b3
ii  xfce4-power-manager  4.20.0-1

xfce4-power-manager-plugins recommends no packages.

xfce4-power-manager-plugins suggests no packages.

-- no debconf information