dstiles - 10:36 pm on Jul 23, 2011 (gmt 0)
Well, one embarassment and one still-problem. :)
Tried the dongle on my brother's XP and it said, No Sim Card - which I knoew was installed... Except... The shop was nearby and I went in to ask questions (first time I've ever used any mobile device, phone or otherwise).
Seems that unlike most plug-in thingies where the corner is cut off to ensure you plug it in the right way round, with sim cards it's not. You can plug it in any way you like, back to front, upside down, the cut-off corner is no deterrent... It now works on XP and shows a flashing blue light on Ubuntu. :(
Otherwise, I think you are correct in your diagnosis: the dongle is showing in the File Manager and is listed in the Disk Utility manager as a drive. Syslog confirms it was detected as a mass storage/card storage device.
A couple of days ago, following advice on one site, I added an empty file ttyUSB0 in /dev and a script 15-three.rules in rules.d which (it said) prevents the dongle appearing as a drive. ttyUSB0 seems to have removed itself (I assume this happens on boot). The file in rules.d is still there but I'm not sure it has the correct product or vendor - the latter particularly.
Am I thinking along the right lines here? Will this file switch to usbserial by disabling disk mode?
The file contains the two lines:
From later web sites and the fact that Ubuntu Network Connections resolves the dongle correctly I would have expected there to be no problem. Maybe I should remove the script but I do not think that would really help.