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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