followup below. many thanks for your help. On Feb 14, 2013, at 18:32 PM, Greg KH wrote: > 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? yes, I loaded it manually. > > Can you try, as root, without the device plugged in: > - clear the kernel log: > dmesg -c I unloaded the io_edgeport module, and deleted the devices that I had created in /dev with mknod manually. rebooted, cleared dmesg. > - plug the device in > - provide the kernel log output > dmesg here is the resulting dmesg: [ 192.866565] usb 2-1.6: new full-speed USB device number 6 using ehci_hcd [ 192.959323] hub 2-1.6:1.0: USB hub found [ 192.959477] hub 2-1.6:1.0: 1 port detected [ 193.229880] usb 2-1.6.1: new full-speed USB device number 7 using ehci_hcd (no /dev devices were created) thanks Greg. doug. > > that should help us here. > > thanks, > > greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
