Nut upsuser - Dec 2009 - APC UPS won't restart after power outage

Hi

Installed new APC Back-UPS CS 350 on single server running openSUSE 11.2
64-bit and configured NUT 2.4.1 (SUSE package) according to instructions.

When testing, NUT shuts down the server correctly and instructs the UPS to
power down. UPS does so after some 20s delay, everything without errors. But
after restoring main power, even after waiting for 1/2h UPS does not by
itself turn on again, all LEDs are dark. One has to manually press the UPS's
power button, which makes server and monitor run again immediately.

What could be wrong that prevents UPS from turning itself on again?

Below output of upsc:

battery.charge: 95
battery.charge.low: 10
battery.charge.warning: 50
battery.date: 2009/10/11
battery.mfr.date: 2009/10/11
battery.runtime: 1237
battery.runtime.low: 180
battery.temperature: 29.2
battery.type: PbAc
battery.voltage: 13.6
battery.voltage.nominal: 12.0
driver.name: usbhid-ups
driver.parameter.pollfreq: 30
driver.parameter.pollinterval: 2
driver.parameter.port: auto
driver.version: 2.4.1
driver.version.data: APC HID 0.93
driver.version.internal: 0.34
input.voltage: 122.0
input.voltage.nominal: 120
output.voltage: 115.0
output.voltage.nominal: 120.0
ups.beeper.status: enabled
ups.delay.shutdown: 20
ups.firmware: 805.q8.D
ups.firmware.aux: q8
ups.load: 49.0
ups.mfr: American Power Conversion
ups.mfr.date: 2009/10/11
ups.model: Back-UPS CS 350
ups.productid: 0002
ups.serial: 4B0941P71480
ups.status: OL CHRG
ups.test.result: No test initiated
ups.timer.reboot: 0
ups.timer.shutdown: -1
ups.vendorid: 051d

Thanks a lot for any hint!
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Citeren Ole Hoppe <ole.hoppe op gmail.com>:
> What could be wrong that prevents UPS from turning itself on again?
The UPS might not support this, in which case there is nothing we can  
do about this. The APC Back-UPS CS 350 is an entry level consumer  
grade UPS which is intended to power small desktop systems (not a  
server running unattended).

If you want to find out what is happening under the hood, you could  
run the driver in debug mode (not powering the server, since the  
output *will* be switched off without warning during this test). Stop  
NUT before running the below command:

     /path/to/usbhid-ups -DDD -k -a <upsname>

With mains present, this will most likely cycle the mains. Since the  
UPS doesn't support a startup with delay, I guess it will turn off the  
load and stay off in the absence of mains voltage.

Best regards, Arjen
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