Nut upsuser - Nov 2014 - blazer_usb disconnects

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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On Nov 5, 2014, at 1:57 PM, Anders Herbj?rnsen <anders.herbjornsen at
gmail.com> wrote:
> 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? 

When you say it used to be working fine, what changed since then?

Also, check for other processes which might try to open the UPS device nodes.
You might have Upower running, or something else which is scanning for HID
devices. If you tried another NUT driver, such as nutdrv_qx (which is scheduled
to replace blazer_usb at some point in the future), you will need to make sure
that is stopped.

I am in the middle of a serial UPS test on my Debian box at the moment, so I
can't confirm that this will show up, but I think that you might be able to
run "lsof -n" as root, and grep for "usb" or
"hid".

-- 
Charles Lepple
clepple at gmail



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