Public bug reported:
As per Question #217761, I'm submitting a bug report in order to include a
patch. Details from question follow:
"
I'm trying to connect serial console to an embedded device and but I'm not able
to connect for the first 36 seconds after connection as modem-manager has
locked the /dev/ttyUSB1 file (as shown by '$ sudo lsof /dev/ttyUSB1'). By
blacklisting the USB ID (0403:6010) of the device in the
'77-mm-usb-devices-blacklist.rhles' udev rule, I can immediately access the
device.
Much like the commonly used single FTDI USB-serial converter chip (USD ID
0403:6001) that is blacklisted in this file "77-mm-usb-device-blacklist.rules",
I think the dual version (USB ID 0403:6010) chould also be added as it is
commonly used in JTAG debugged boards and embedded devices.
...
"
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: modemmanager 0.6.0.0.really-0ubuntu1 [modified:
lib/udev/rules.d/77-mm-usb-device-blacklist.rules]
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic x86_64
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
Date: Thu Dec 27 14:07:21 2012
InstallationDate: Installed on 2012-12-23 (3 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: modemmanager
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: modemmanager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug quantal running-unity
** Patch added: "ft2232-blacklist.patch"
https://bugs.launchpad.net/bugs/1094138/+attachment/3469297/+files/ft2232-blacklist.patch
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https://bugs.launchpad.net/bugs/1094138
Title:
Modem Manager Locks Dual FTDI Serial Ports
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