External serial modem suddenly not connecting anymore
Alright, so I have a external serial modem, it has worked fine up until now. Last night, there was a thunderstorm and we had two power outages in pretty quick succession. I restart my computer, did a quick fsck, and everything seems fine.
Except one thing.
My modem won't connect anymore. It's attached to ttyS0, and when I run pon it just sits there. plog shows that it's sitting there waiting for OK and never getting it. Twice. it looks like this (paraphrased):
script ip-up failed.
I am assuming that alarm means time-out, since it only appears after aboiut a minute of waiting, and that ATZ and AT are different initialization strings for the modem.
I know that the phone cable going to the modem is fine, because I plugged a phone into it and got a dial tone. I assume that the serial port is fine because otherwise it wouldn't be able to even get that far in the ip-up script, right? I don't happen to have anything else I could use to verify that the serial port is fine (unless there's some command line test I could do to check...my knowledge of the huge repository of command line tools is far from complete.)
I am running Ubuntu Warty.
So any ideas?