Errore durante l'apertura della porta seriale

ragazzi ho un problema che mi sta scoppiando la testa, stavo compilando tranquillamente... e improvvisamente mi appare sto errore:

code: [select]

errore durante lapertura della porta seriale {0}
avrdude: usbdev_open(): did not find usb device "usb"
processing.app.serialexception: errore durante lapertura della porta seriale '{0}'.
at processing.app.serial.<init>(serial.java:178)
at processing.app.serial.<init>(serial.java:92)
at processing.app.serialmonitor.openserialport(serialmonitor.java:207)
at processing.app.editor.handleserial(editor.java:2481)
at processing.app.editor$17.actionperformed(editor.java:665)
at javax.swing.abstractbutton.fireactionperformed(abstractbutton.java:2018)
at javax.swing.abstractbutton$handler.actionperformed(abstractbutton.java:2341)
at javax.swing.defaultbuttonmodel.fireactionperformed(defaultbuttonmodel.java:402)
at javax.swing.defaultbuttonmodel.setpressed(defaultbuttonmodel.java:259)
at javax.swing.abstractbutton.doclick(abstractbutton.java:376)
at javax.swing.plaf.basic.basicmenuitemui.doclick(basicmenuitemui.java:833)
at javax.swing.plaf.basic.basicmenuitemui$handler.mousereleased(basicmenuitemui.java:877)
at java.awt.component.processmouseevent(component.java:6505)
at javax.swing.jcomponent.processmouseevent(jcomponent.java:3312)
at java.awt.component.processevent(component.java:6270)
at java.awt.container.processevent(container.java:2229)
at java.awt.component.dispatcheventimpl(component.java:4861)
at java.awt.container.dispatcheventimpl(container.java:2287)
at java.awt.component.dispatchevent(component.java:4687)
at java.awt.lightweightdispatcher.retargetmouseevent(container.java:4832)
at java.awt.lightweightdispatcher.processmouseevent(container.java:4492)
at java.awt.lightweightdispatcher.dispatchevent(container.java:4422)
at java.awt.container.dispatcheventimpl(container.java:2273)
at java.awt.window.dispatcheventimpl(window.java:2719)
at java.awt.component.dispatchevent(component.java:4687)
at java.awt.eventqueue.dispatcheventimpl(eventqueue.java:729)
at java.awt.eventqueue.access$200(eventqueue.java:103)
at java.awt.eventqueue$3.run(eventqueue.java:688)
at java.awt.eventqueue$3.run(eventqueue.java:686)
at java.security.accesscontroller.doprivileged(native method)
at java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:76)
at java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:87)
at java.awt.eventqueue$4.run(eventqueue.java:702)
at java.awt.eventqueue$4.run(eventqueue.java:700)
at java.security.accesscontroller.doprivileged(native method)
at java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:76)
at java.awt.eventqueue.dispatchevent(eventqueue.java:699)
at java.awt.eventdispatchthread.pumponeeventforfilters(eventdispatchthread.java:242)
at java.awt.eventdispatchthread.pumpeventsforfilter(eventdispatchthread.java:161)
at java.awt.eventdispatchthread.pumpeventsforhierarchy(eventdispatchthread.java:150)
at java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:146)
at java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:138)
at java.awt.eventdispatchthread.run(eventdispatchthread.java:91)
caused by: gnu.io.unsupportedcommoperationexception: invalid parameter
at gnu.io.rxtxport.setserialportparams(rxtxport.java:213)
at processing.app.serial.<init>(serial.java:163)
... 42 more


uso linux, precisamente lubuntu 13.04, prima andava tutto tranquillamente, non capisco cosa sia successo!

"prima" di quando? cos'hai fatto perché ti venisse fuori questo problema?
che ide usi? da dove l'hai installato?

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