[Nut-upsuser] Premature end of script headers: upsimage.cgi

[Arjen de Korte]

Citeren ben thielsen <bthielsen op safarivideonetworks.com>:

[...]

> some additional information - i've since added another smart-ups  
> 1500 (not xlm), connected via usb to this same server, and it draws  
> the voltage graph without incident.

The latter is useful information, since it means that the problems is  
probably in the values reported by the 'apcsmart' and 'usbhid-ups'  
drivers that you're using to monitor these devices. Could you post the  
'upsc' output for both?

Chances are that the difference is in the reported values for the  
'battery.voltage(.*)' values. It might confuse upsimage.cgi when it  
tries to calculate 'battery.voltage.minimum' and  
'battery.voltage.maximum' (those are not reported by either driver),  
which is needed to draw the scale of the battery voltage graph.

Best regards, Arjen
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