[Nut-upsuser] UPS auto restart problem upgrading from nut 2.0.1-2.2.0 with MGE Pulsar EXtreme 700C

[Olly Lappage]

Hi,

Apologies if this is a known problem.  I have just joined the list and 
haven't done an exhaustive search of the archives.  Also I am no UPS 
expert, so please excuse me if some of my terminology is poor.

I use an MGE Pulsar Extreme 700C connected via RS232 to the linux server 
it powers.  I have recently upgraded to a new linux distribution.  Both 
new and old use 2.6 kernels, although the new one is about a year newer.

When I did the upgrade I thought I may as well upgrade from nut 2.0.1 to 
2.2.0 at the same time.

My configuration instructs the UPS to shut down power to the load with a 
40 second delay once my O/S is halted, then switch power on to the load 
when AC returns.  I found that the UPS failed to resume power when I 
connected AC back to the UPS.   I tested this a few times always with 
the same result.  The UPS just sits there with the LED's slowly lighting 
in sequence then extinguishing in reverse sequence).  upsdrvctl outputs 
the same text as it did previously just before shutdown.  Can't remember 
what exactly, but something like "UPS responds auto restart request OK, 
UPS responds shutdown request OK".

I compiled the 2.0.1 version of nut on the new O/S and everything works 
fine now.  I'm quite happy to go on using the old version as I have had 
no problems with it at all in the last 2.5(ish) years but I thought this 
may be of interest to someone perhaps...  I am assuming the problem is 
most likely to be with the updated MGE UPS driver.

Cheers

Olly.


Info upsc reports from the unit:

battery.charge: 100.0
battery.charge.low: 45
battery.runtime: 00768
battery.voltage: 027.3
battery.voltage.nominal: 024.0
driver.name: mge-utalk
driver.parameter.port: /dev/ttyS1
driver.version: 2.0.1
driver.version.internal: 0.81.0
input.frequency: 50.00
input.voltage: 240.2
output.current: 001.3
output.voltage: 230.5
ups.delay.shutdown: 040
ups.delay.start: 060
ups.firmware: 16
ups.id: EXtreme 700C 16
ups.load: 052.0
ups.mfr: MGE UPS SYSTEMS
ups.model: EXtreme 700C
ups.status: OL CHRG
ups.test.interval: 10080