Re: modem probing takes too long

[Dan Williams <dcbw redhat com>]

On Sun, 2009-09-13 at 10:17 +0300, Valmantas Palikša wrote:
> I have ZTE MF633 and it has this "feature", opening or
> closing /dev/ttyUSB1 blocks the program that is trying to open/close it
> for about 5 seconds. This in turn slows down modem-manager's probing
> speed. It takes about 60 seconds from plugging it in an entry appearing
> in nm-applet's menu. I don't know whether this needs to be addressed in
> kernel or MM, but it's quite annoying to wait for 1 minute for the modem
> to be usable. Maybe probing ports in MM in parallel (threaded) makes
> sense? Currently the PPP data ttyUSB port reports instantly, and I
> imagine that a threaded solution would speed things considerably.

MM does probe the ports in parallel...  It might simply be that the
modem firmware doesn't want to talk to more than one port at a time,
which means we're out of luck.  How many tty ports does it expose?

Dan