Thinkpad X1瑜伽OLED亮度
我在联想X1瑜伽OLED上使用GNOME（Wayland）运行Ubuntu 17.10。
我相信这个特殊的Ubuntu安装几年前就开始使用Ubuntu 16.04了。 自从它首次安装以来，我一直在系统上运行GNOME。 – 这意味着我可能在我的系统中留下了一些古老的覆盖，我只是忘记了。
问题：我在日志中收到了来自gnome-settings-daemon的大量错误消息：
feb 23 13:04:32 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized feb 23 13:04:32 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported. feb 23 13:04:33 kul pkexec[408567]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 843] feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported. feb 23 13:04:33 kul pkexec[408571]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 843] feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported. feb 23 13:04:34 kul pkexec[408575]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 758] feb 23 13:04:34 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized feb 23 13:04:34 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported. feb 23 13:04:35 kul pkexec[408579]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 783] feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported. feb 23 13:04:35 kul pkexec[408585]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 800] feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported. 我在“设置”面板中禁用/启用了“自动亮度”控件，它似乎没有任何改变。
在Ubuntu 18.04（基于xorg）中观察到类似的情况。 使用gsettings set org.gnome.settings-daemon.plugins.power ambient-enabled false通过关闭自动亮度解决了这个问题。