On Thu, Feb 14, 2013 at 06:07:38PM -0500, Doug Minett wrote:
> Hi,
>
> I am using Ubuntu's 3.2.0-37 distribution of linux. Is there a known
> problem with the module in this version of the kernel?
I don't know, but as this is a distro kernel, you really should contact
the distro to get support for it, there's nothing we can do with their
kernel directly, sorry.
> cat /dev/ttyUSB0 results in "no such device" message (checked device
> is present with rw r r root root permissions)
>
> I have tried a number of things to get the Digi Edgeport/4r to work.
>
> 1) loaded module: modprobe io_edgeport
If you plug the device in, the driver should be automatically loaded.
>
> 2) manually created devices: mknod /dev/ttyUSB[0-3] c 188 0 (is io_edgeport
> supposed to do this?)
You should never have to do this, if the device is present, the device
nodes will be created automatically.
> 3) output from dmesg:
>
> [ 3075.917619] usbcore: deregistering interface driver io_edgeport
> [ 3075.917652] USB Serial deregistering driver Edgeport 2 port adapter
> [ 3075.917666] USB Serial deregistering driver Edgeport 4 port adapter
> [ 3075.917676] USB Serial deregistering driver Edgeport 8 port adapter
> [ 3075.917685] USB Serial deregistering driver EPiC device
> [ 3085.878341] usb 2-1.5: USB disconnect, device number 21
> [ 3085.878345] usb 2-1.5.1: USB disconnect, device number 22
This is your device being removed from the system, can you provide log
messages from before this?
> [ 3131.433041] USB Serial support registered for Edgeport 2 port adapter
> [ 3131.433050] USB Serial support registered for Edgeport 4 port adapter
> [ 3131.433058] USB Serial support registered for Edgeport 8 port adapter
> [ 3131.433066] USB Serial support registered for EPiC device
> [ 3131.433082] usbcore: registered new interface driver io_edgeport
> [ 3131.433083] io_edgeport: v2.7:Edgeport USB Serial Driver
Did you just load the driver by hand here?
Can you try, as root, without the device plugged in:
- clear the kernel log:
dmesg -c
- plug the device in
- provide the kernel log output
dmesg
that should help us here.
thanks,
greg k-h
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