[Lubuntu] XFCE Power Manager conflicts with Apcupsd?

John Hupp lubuntu at prpcompany.com
Tue Oct 2 15:36:40 UTC 2012

Since I find the same behavior on another Lubuntu 12.04 PC without 
apcupsd installed, it's clearly not a question of a conflict between 
xfce4-power-manager and apcupsd.

I have filed a bug report against xfce4-power-manager at 

On 9/28/2012 1:13 PM, John Hupp wrote:
> Exploring this some more, I find that XFCE Power Manager just has 0.0 
> for all the properties it monitors for an APC Back-UPS ES 350.  And 
> this is the case whether apcupsd is installed or not.
> So XPM is perhaps not communicating properly with whatever backend it 
> uses to get information about the UPS, or the backend is not 
> monitoring the UPS effectively.
> Does anyone know what XPM uses for its UPS backend?  Can it be 
> configured to use apcupsd as its backend?  I seems that apcupsd is 
> generating correct values for the various UPS properties.
> I'll look next at putting these questions to someone at xfce.org, but 
> does anyone here know enough to make further progress on resolving 
> these problems?
> On 9/27/2012 6:36 PM, John Hupp wrote:
>> I have some initial success getting apcupsd installed to monitor and 
>> manage the APC Back-UPS ES 350 I'm using with one of my test networks.
>> Running "apcaccess status" gives me healthy-looking output.
>> But pulling the usb cable that connects to the UPS should cause 
>> apcupsd to generate an event entry in a log and also provide a 
>> notification message.  It does neither as far as I can tell.
>> I observe that XFCE Power Manager, which is installed by default on 
>> Lubuntu, is also monitoring the APC and aiming to provide various 
>> management features.
>> Does anyone know if they can co-exist, or if they will conflict with 
>> each other as regards the UPS?
>> One might think of trying to use just XFCE Power Manager as an 
>> alternative to apcupsd, but in the above test where I pulled the usb 
>> plug, X.P.M responded by closing its indicator icon and providing no 
>> notifications.

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