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Topic: arduino tools-serial menu item disabled (Read 5 times) previous topic - next topic


please check the system log:

open a console;
run command 'sudo dmesg -c' (to clear out all previous messages);
plug the arduino into a USB-port
run 'dmesg' again (no need to clear the older messages again)
what do you see? any error messages?
unplug the arduino and check whats printed on removing the device too.



Hey that was something on the path of fixing it

I did with -c parameter and had a bunch of things clearing
Then I plugged and with a another dmesg I had the following:

[16271.592581] usb 2-1: new full speed USB device using ohci_hcd and address 3
[16271.650108] hub 2-0:1.0: unable to enumerate USB device on port 1

then I unplug and had:

[16271.592581] usb 2-1: new full speed USB device using ohci_hcd and address 3
[16271.650108] hub 2-0:1.0: unable to enumerate USB device on port 1

Still tried the IDE but the Serial Port was still disabled

I have installed the Windows version of the .exe thru Wine, and even though I got a poor look of IDE's GUI it found the port of my board on COM 1! :-X


Apr 28, 2010, 10:11 pm Last Edit: Apr 28, 2010, 10:11 pm by gbulmer Reason: 1
That error is mentioned here:

where it says "This bug is still present in Ubuntu 9.04 and Ubuntu 9.10 ..."

then goes on to say:
"A suggestion of the cause is at http://lkml.org/lkml/2008/10/24/209"
which says:
"... This is normal; it is caused by userspace loading the drivers in the
wrong order.  ehci-hcd is supposed to be loaded before uhci-hcd or
ohci-hcd, not after. ..."

Couldn't find a resolution, so I may have gone down a blind alley


I'm not sure about this tip here you could give it a try:
I you have a USB-Hub (or can borrow one from a friend). Does it help to plug the arduino-board into the external hub wqhich is then connected to your computer?



I have also meeted above problem. Who can help me ? Thanks



Hello guys!

I'm not too sure what went on but after a few updates (not up to the 10.04 Lts)

My USB ports started blinking! I've got everything running now! ;D ;D ;D

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