[Nut-upsuser] blazer_usb disconnects

Wed Nov 5 18:57:21 UTC 2014

I'm running Ubuntu 14.04.1 with nut 2.7.1-1ubuntu1, using a
Powerwalker/INNO TECH ups.

It used to working fine, but lately blazer_usb just executes a few commands
and then terminates with a "Got disconnected by another driver" message.

Any suggestions?

Example output from blazer_usb with loads of debug:

# /lib/nut/blazer_usb -DDDDDDDDDDDDDDDDDDDDDD -a nasups
Network UPS Tools - Megatec/Q1 protocol USB driver 0.10 (2.7.1)
   0.000000    send_to_all: SETINFO driver.parameter.port "auto"
   0.000118    send_to_all: SETINFO driver.parameter.vendorid "0665"
   0.000175    send_to_all: SETINFO driver.parameter.productid "5161"
   0.000248    debug level is '22'
(...snipped lines with incorrect devices..)
   0.457447    Checking device (0665/5161) (004/002)
   0.469854    - VendorID: 0665
   0.469932    - ProductID: 5161
   0.469974    - Manufacturer: INNO TECH
   0.470016    - Product: USB to Serial
   0.470061    - Serial Number: 20100826
   0.470104    - Bus: 004
   0.470147    Trying to match device
   0.470267    Device matches
   0.470332    failed to claim USB device: could not claim interface 0:
Device or resource busy
   0.471507    detached kernel driver from USB device...
   0.472966    send_to_all: SETINFO ups.vendorid "0665"
   0.473262    send_to_all: SETINFO ups.productid "5161"
   0.473471    send_to_all: SETINFO device.type "ups"
   0.473599    send_to_all: SETINFO driver.version "2.7.1"
   0.473662    send_to_all: SETINFO driver.version.internal "0.10"
   0.473715    send_to_all: SETINFO driver.name "blazer_usb"
   0.473766    Trying megatec protocol...
   0.474853    send: Q1
   0.723829    read: (229.4 229.4 230.0 021 50.3 13.6 25.0 00001001
   0.723948    send_to_all: SETINFO input.voltage "229.4"
   0.724006    send_to_all: SETINFO input.voltage.fault "229.4"
   0.724059    send_to_all: SETINFO output.voltage "230.0"
   0.724146    send_to_all: SETINFO ups.load "21"
   0.724212    send_to_all: SETINFO input.frequency "50.3"
   0.724274    send_to_all: SETINFO battery.voltage "13.60"
   0.724327    send_to_all: SETINFO ups.temperature "25.0"
   0.724386    send_to_all: SETINFO ups.beeper.status "enabled"
   0.724444    send_to_all: SETINFO ups.type "offline / line interactive"
   0.724495    send_to_all: SETINFO ups.status "OL"
   0.724538    Status read in 1 tries
   0.724580    Supported UPS detected with megatec protocol
   0.725831    send: F
   0.883831    read: #230.0 003 12.00 50.0
   0.883930    send_to_all: SETINFO input.voltage.nominal "230"
   0.883981    send_to_all: SETINFO input.current.nominal "3.0"
   0.884033    send_to_all: SETINFO battery.voltage.nominal "12.0"
   0.884085    send_to_all: SETINFO input.frequency.nominal "50"
   0.884131    Ratings read in 1 tries
   0.885878    send: I
   0.947886    read: I
   0.947967    blazer_vendor: short reply
   0.948010    Vendor information read 1 failed
   0.949884    send: I
   1.011887    read: I
   1.011965    blazer_vendor: short reply
   1.012009    Vendor information read 2 failed
   1.013878    send: I
   1.075811    read: I
   1.075888    blazer_vendor: short reply
   1.075930    Vendor information read 3 failed
   1.075974    Vendor information unavailable
   1.076018    No values provided for battery high/low voltages in ups.conf

   1.076083    send_to_all: SETINFO battery.voltage.low "10.40"
   1.076151    send_to_all: SETINFO battery.voltage.high "13.00"
   1.076199    Using 'guestimation' (low: 10.400000, high: 13.000000)!
   1.076242    Battery runtime will not be calculated (runtimecal not set)
   1.076303    send_to_all: SETINFO ups.delay.start "180"
   1.076350    send_to_all: SETINFO ups.delay.shutdown "30"
   1.076396    send_to_all: ADDCMD beeper.toggle
   1.076450    send_to_all: ADDCMD load.off
   1.076494    send_to_all: ADDCMD load.on
   1.076537    send_to_all: ADDCMD shutdown.return
   1.076580    send_to_all: ADDCMD shutdown.stayoff
   1.076625    send_to_all: ADDCMD shutdown.stop
   1.076668    send_to_all: ADDCMD test.battery.start
   1.076713    send_to_all: ADDCMD test.battery.start.deep
   1.076758    send_to_all: ADDCMD test.battery.start.quick
   1.076838    send_to_all: ADDCMD test.battery.stop
   1.077876    send: Q1
   1.331815    read: (229.4 229.4 230.0 024 50.3 13.6 25.0 00001001
   1.331926    send_to_all: SETINFO ups.load "24"
   1.331986    send_to_all: SETINFO battery.charge "100"
   1.332046    send_to_all: DATAOK
   1.332212    dstate_init: sock /var/run/nut/blazer_usb-nasups open on fd 5
   1.332290    send_to_all: SETINFO driver.parameter.pollinterval "2"
   1.333860    send: Q1
   1.587784    read: (229.4 229.4 229.4 017 50.3 13.6 25.0 00001001
   1.587887    send_to_all: SETINFO output.voltage "229.4"
   1.587944    send_to_all: SETINFO ups.load "17"
   3.334767    send: Q1
   3.603695    read: (230.0 230.0 229.4 017 50.3 13.6 25.0 00001001
   3.603789    send_to_all: SETINFO input.voltage "230.0"
   3.603841    send_to_all: SETINFO input.voltage.fault "230.0"
   5.334909    send: error sending control message: Device or resource busy
   5.334949    Got disconnected by another driver: Device or resource busy
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