Re: How to make Modem Manager ignore non-modem USB serial devices?

[Paul Stoffregen <paul pjrc com>]

On 04/26/2013 10:59 AM, Dan Williams wrote:
> On Fri, 2013-04-26 at 05:01 -0700, Paul Stoffregen wrote:
> > What is the current recommended way to request the Modem Manager ignore
> > a USB serial device which is not a modem?
> >
> > Until recently, this udev rule worked.
> >
> > KERNEL=="ttyACM*", ATTRS{idVendor}=="16c0",
> > ATTRS{idProduct}=="04[789]?", MODE:="0666", ENV{ID_MM_DEVICE_IGNORE}="1"
> >
> > I've had at least 3 users report problems which appear to be related to
> > newer versions of the Modem Manager apparently no longer respecting
> > ENV{ID_MM_DEVICE_IGNORE} and opening the device shortly after it enumerates.
>  From a quick look that rule should work, but remember you want to tag
> the entire *USB device*, not just the serial port.

Yes, that was indeed the problem.

Thanks!

>    udev rules parsing
> changes might also affect whether or not this works.  In any case, run
> 'udevadm control --export-db' and check whether the USB device parent of
> the serial port actually has ID_MM_DEVICE_IGNORE defined.
>
> Dan