Question: Running a clean install of ubuntustudio 14.04 the suspend and resume works when using the power button or selecting it from the user menu but is not available in the xfce4-power-manager-settings. Only "Lock Screen" or "Nothing" is available for lid close action.

<http://docs.xfce.org/xfce/xfce4-power-manager/faq> 
Suggests that it is likely permissions issue since suspend/resume clearly works. 

My single user on a single user system has the following group memberships: username adm cdrom sudo audio dip plugdev lpadmin sambashare

Any suggestions? I'd rather not fry my new hdd because I forgot to suspend and just close the lid.

Updates:

* Changing "/etc/systemd/logind.conf" settings have no effect.
* This appears to be a bug in upower <https://bugzilla.redhat.com/show_bug.cgi?id=1005234>
* I've confirmed this is not an issue with my hardware on the standard ubuntu desktop (using a live drive)
* I've confirmed this is not an issue with xubuntu!?! (I had to enable suspend in the xfce4-power-manager-settings but it was an option)
* Changing kernel to linux-general has no affect.
* xfce4-power-manager --dump & sudo xfce4-power-mangager --dump

```

---------------------------------------------------
       Xfce power manager version 1.2.0
With policykit support
With network manager support
With DPMS support
---------------------------------------------------
Can suspend: False
Can hibernate: False
Can spin down hard disks: True
Authorized to suspend: True
Authorized to hibernate: True
Authorized to shutdown: True
Authorized to spin down hard disks: False
Has battery: True
Has brightness panel: True
Has power button: True
Has hibernate button: True
Has sleep button: True
Has LID: True

```

Answer: 
1. Install `pm-utils`

```
sudo apt-get install pm-utils

```
2. Reboot

Reference: [[Solved] Issues with xfce4-power-manager-1.2.0](https://forum.xfce.org/viewtopic.php?id=7250)

Discussion resume that: `upower` is relying on `pm-utils` to check for suspend/hibernate capability.

The broken link in the reference page should point to related bug report:
[Debian bug#639754 [upower] upower doesn't verify correctly the "suspend" and "hibernate" capabilities correctly](https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=639754)

Not sure about this as `upower` package has `Depends: pm-utils | systemd | systemd-services`. I thought they should be alternatives. So may be there is other solution using `systemd-services` which is installed by default.
Another solution is to use the power management GUI xfce provides:
<https://docs.xfce.org/xfce/xfce4-power-manager/preferences>