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Old 10-31-2009, 05:00 PM
Colin Law
 
Default USB-serial converter recognised but not mounted

I have a USB to serial converter. When I plug this in on a Ubuntu 9.04
machine it works fine. With lsusb I see

Bus 003 Device 007: ID 0403:6001 Future Technology Devices
International, Ltd FT232 USB-Serial (UART) IC

and in dmesg I see

[ 8139.812054] usb 3-2: new full speed USB device using uhci_hcd and address 7
[ 8140.020285] usb 3-2: configuration #1 chosen from 1 choice
[ 8140.022817] ftdi_sio 3-2:1.0: FTDI USB Serial Device converter detected
[ 8140.022863] usb 3-2: Detected FT232BM
[ 8140.022958] usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0

However on a Xubuntu 9.04 machine lsusb shows

Bus 001 Device 004: ID 0403:6001 Future Technology Devices
International, Ltd FT232 USB-Serial (UART) IC

which seems ok, but dmesg only shows

[ 1287.847468] usb 1-1: new full speed USB device using ohci_hcd and address 4
[ 1288.126514] usb 1-1: configuration #1 chosen from 1 choice

and the ttyUSB0 is not available.

I suspect that the fact that it is Xubuntu is not relevant.

Any suggestions on where to go from here would be much appreciated.

Colin

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Old 11-02-2009, 10:37 AM
Colin Law
 
Default USB-serial converter recognised but not mounted

Any thoughts on this anyone?

2009/10/31 Colin Law <clanlaw@googlemail.com>:
> I have a USB to serial converter. When I plug this in on a Ubuntu 9.04
> machine it works fine. With lsusb I see
>
> Bus 003 Device 007: ID 0403:6001 Future Technology Devices
> International, Ltd FT232 USB-Serial (UART) IC
>
> and in dmesg I see
>
> [ 8139.812054] usb 3-2: new full speed USB device using uhci_hcd and address 7
> [ 8140.020285] usb 3-2: configuration #1 chosen from 1 choice
> [ 8140.022817] ftdi_sio 3-2:1.0: FTDI USB Serial Device converter detected
> [ 8140.022863] usb 3-2: Detected FT232BM
> [ 8140.022958] usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0
>
> However on a Xubuntu 9.04 machine lsusb shows
>
> Bus 001 Device 004: ID 0403:6001 Future Technology Devices
> International, Ltd FT232 USB-Serial (UART) IC
>
> which seems ok, but dmesg only shows
>
> [ 1287.847468] usb 1-1: new full speed USB device using ohci_hcd and address 4
> [ 1288.126514] usb 1-1: configuration #1 chosen from 1 choice
>
> and the ttyUSB0 is not available.
>
> I suspect that the fact that it is Xubuntu is not relevant.
>
> Any suggestions on where to go from here would be much appreciated.
>
> Colin
>

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Old 11-02-2009, 12:02 PM
"Karl F. Larsen"
 
Default USB-serial converter recognised but not mounted

Colin Law wrote:
> Any thoughts on this anyone?
>
> 2009/10/31 Colin Law <clanlaw@googlemail.com>:
>> I have a USB to serial converter. When I plug this in on a Ubuntu 9.04
>> machine it works fine. With lsusb I see
>>
>> Bus 003 Device 007: ID 0403:6001 Future Technology Devices
>> International, Ltd FT232 USB-Serial (UART) IC
>>
>> and in dmesg I see
>>
>> [ 8139.812054] usb 3-2: new full speed USB device using uhci_hcd and address 7
>> [ 8140.020285] usb 3-2: configuration #1 chosen from 1 choice
>> [ 8140.022817] ftdi_sio 3-2:1.0: FTDI USB Serial Device converter detected
>> [ 8140.022863] usb 3-2: Detected FT232BM
>> [ 8140.022958] usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0
>>
>> However on a Xubuntu 9.04 machine lsusb shows
>>
>> Bus 001 Device 004: ID 0403:6001 Future Technology Devices
>> International, Ltd FT232 USB-Serial (UART) IC
>>
>> which seems ok, but dmesg only shows
>>
>> [ 1287.847468] usb 1-1: new full speed USB device using ohci_hcd and address 4
>> [ 1288.126514] usb 1-1: configuration #1 chosen from 1 choice
>>
>> and the ttyUSB0 is not available.
>>
>> I suspect that the fact that it is Xubuntu is not relevant.
>>
>> Any suggestions on where to go from here would be much appreciated.
>>
>> Colin
>>
>
You can't have first hand experiance unless you have the
converter. I know there are many kinds of USB to serial
converters and many work very poor.


Karl


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Linux User
#450462 http://counter.li.org.
Key ID = 3951B48D


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