Look at my patch from 10/18, its doing the same and fixes the problem, I am using network-manager since then successfully with my AT&T Sierra Aircard 881. I agree with you, its now the most important thing to get this into Intrepid, especially because this is one of the main laptop cards AT&T delivers with its data plans.
However, at a later point of time it should be analyzed what ttyUSB2 is for. Using ttyUSB2 in the Sierra scripts works just fine, also with spaces in the AT command.
Look at my patch from 10/18, its doing the same and fixes the problem, I am using network-manager since then successfully with my AT&T Sierra Aircard 881. I agree with you, its now the most important thing to get this into Intrepid, especially because this is one of the main laptop cards AT&T delivers with its data plans.
However, at a later point of time it should be analyzed what ttyUSB2 is for. Using ttyUSB2 in the Sierra scripts works just fine, also with spaces in the AT command.