** Changed in: modemmanager
Status: New = Fix Released
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https://bugs.launchpad.net/bugs/1094138
Title:
Modem Manager Locks Dual FTDI Serial Ports
To manage notifications about
This also affects FTDI's newer FT230X series. VID:0403, PID:6015
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https://bugs.launchpad.net/bugs/1094138
Title:
Modem Manager Locks Dual FTDI Serial Ports
To manage notifications
Ack.
We already blacklist specific devices, and it seems as though this
particular one is indeed used for things other than modems. It remains
that it's easy enough to remove/comment out the blacklist entry, and I
still live in my fantasy world where RS232 modem users are becoming more
rare.
I opened a new bug upstream to track the root issue:
https://bugzilla.gnome.org/show_bug.cgi?id=691076
** Bug watch added: GNOME Bug Tracker #691076
https://bugzilla.gnome.org/show_bug.cgi?id=691076
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** Also affects: modemmanager via
https://bugzilla.gnome.org/show_bug.cgi?id=691076
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1094138
Title:
** Changed in: modemmanager
Status: Unknown = New
** Changed in: modemmanager
Importance: Unknown = Medium
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Title:
Modem Manager
Ahh---that makes sense about the USB to Serial adapter--thanks for
explaining Alekasander.
As a USB-to-serial adapter is a generic device that may or may not be
connected to a modem, a manually-launched scan makes sense. In the
interim though, it makes sense that distros adjust the blacklist to
** Tags removed: running-unity
** Tags added: patch-unity running
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Title:
Modem Manager Locks Dual FTDI Serial Ports
To manage notifications
The attachment ft2232-blacklist.patch of this bug report has been
identified as being a patch. The ubuntu-reviewers team has been
subscribed to the bug report so that they can review the patch. In the
event that this is in fact not a patch you can resolve this situation by
removing the tag
ModemManager 0.6.x supports RS232 modems connected to the host through a
serial-usb adapter. This patch would make those modems stop working, so
I don't think this should be applied to git master or any other distro.
ModemManager shouldn't grab those tty ports for that long. The problem
here is
Are there any modems using a FT2232 chip without a custom USB device ID?
I suggested the change on the basis that the chip is commonly used in
embedded devices (e.g.
http://www.tincantools.com/product.php?productid=16134 and
https://www.gumstix.com/store/product_info.php?products_id=262) without
Oh, it seems that the single FTDI USB-serial converter is blacklisted only in
IUbuntu:
http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/raring/modemmanager/raring/view/head:/debian/patches/arduino-blacklist.patch
I'll let Ubuntu packagers to comment then :)
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Modems won't be using the FT2232 chip directly but serial adapters will.
Imagine this setup:
PC[USB] --- USB to RS232 adapter --- [RS232]Modem
The only way for ModemManager to know that there is a modem behind the
adapter is to probe the port.
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