New issue by bugcrazy on void-packages repository

https://github.com/void-linux/void-packages/issues/13326
Description: ### System

* xuname:  Void 4.19.60_1 x86_64 AuthenticAMD notuptodate rrFFF
  
* package:  xqt-session-0.14.1

### Expected behavior
The lxqt-session-0.14.1 package has bugs in Hibernate, Suspend, Reboot, PowerOff, not working without root.

### Actual behavior
Not root (glibc)

```
 (0x7ffc45978750) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanPowerOff"
 (0x7ffc45978750) Debug: systemd: "CanPowerOff" = "no"
```
Root (glibc)

```
 (0x7ffcd1e35cf0) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanPowerOff"
 (0x7ffcd1e35cf0) Debug: systemd: "CanPowerOff" = "yes"
```
Not root (musl)

```
(0x7ffc0a597710) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanPowerOff"                
```

Root (musl)

```
(0x7ffc0a597710) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.ConsoleKit" "/org/freedesktop/ConsoleKit/Manager" "org.freedesktop.ConsoleKit.Manager" "CanPowerOff"  
```

The debug.log file
```
(0x7ffced8ee0c0) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanHibernate"
2019-07-24 21:35:16.021 (0x7ffced8ee0c0) Warning: ** Dbus error **************************
2019-07-24 21:35:16.023 (0x7ffced8ee0c0) Warning: Error name  "org.freedesktop.DBus.Error.InvalidArgs"
2019-07-24 21:35:16.024 (0x7ffced8ee0c0) Warning: Error msg   "No such interface “org.freedesktop.DBus.Properties”"
2019-07-24 21:35:16.026 (0x7ffced8ee0c0) Warning: ****************************************
2019-07-24 21:35:16.088 (0x7ffced8ee0c0) Debug: systemd: "CanHibernate" = "na"
2019-07-24 21:35:16.092 (0x7ffced8ee0c0) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanSuspend"
2019-07-24 21:35:16.096 (0x7ffced8ee0c0) Warning: ** Dbus error **************************
2019-07-24 21:35:16.097 (0x7ffced8ee0c0) Warning: Error name  "org.freedesktop.DBus.Error.InvalidArgs"
2019-07-24 21:35:16.097 (0x7ffced8ee0c0) Warning: Error msg   "No such interface “org.freedesktop.DBus.Properties”"
2019-07-24 21:35:16.098 (0x7ffced8ee0c0) Warning: ****************************************
2019-07-24 21:35:16.111 (0x7ffced8ee0c0) Debug: systemd: "CanSuspend" = "na"
2019-07-24 21:35:16.130 (0x7ffcbed6e2c0) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanReboot"
2019-07-24 21:35:16.185 (0x7ffcbed6e2c0) Debug: systemd: "CanReboot" = "no"
2019-07-24 21:35:16.189 (0x7ffced8ee0c0) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanReboot"
2019-07-24 21:35:16.256 (0x7ffced8ee0c0) Debug: systemd: "CanReboot" = "no"
2019-07-24 21:35:16.261 (0x7ffcbed6e2c0) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanPowerOff"
2019-07-24 21:35:16.314 (0x7ffcbed6e2c0) Debug: systemd: "CanPowerOff" = "no"
2019-07-24 21:35:16.318 (0x7ffced8ee0c0) Warning: dbusCall: QDBusInterface is invalid "org.freedesktop.login1" "/org/freedesktop/login1" "org.freedesktop.login1.Manager" "CanPowerOff"
2019-07-24 21:35:16.368 (0x7ffced8ee0c0) Debug: systemd: "CanPowerOff" = "no"
```

### Steps to reproduce the behavior
Issue has been opened in the LXQT repository, reporting the bug.
https://github.com/lxqt/lxqt-session/issues/272