[Bug 708068] [NEW] usbserial problems

[uli]

Public bug reported:

Binary package hint: setserial

Hi,
I use an USB to RS232 adapter to connect to an ARM development board via minicom or cutecom.
After plugging I see that usbserial is loaded and used by mct_u232:
(line from "lsmod")
usbserial              33100  1 mct_u232
I also see a new device /dev/ttyUSB0
however:
setserial -g /dev/ttyUSB0 tells me: "/dev/ttyUSB0: Invalid argument"
I am in group "dialout", it is not an "access denied" problem.
When starting minicom, it starts fine the first time after plugging in the USB->RS232 adapter. When exiting and re-starting minicom however I also get: minicom: cannot open /dev/ttyUSB0: Invalid argument (cutecom shows the same effect)
I guess it is a driver problem but I am not sure.
Ubuntu release 10.10 all upgrades applied.
Thanks for any help
Uli

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: setserial 2.17-45.2ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
Uname: Linux 2.6.35-24-generic i686
Architecture: i386
Date: Wed Jan 26 16:05:37 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: setserial

** Affects: setserial (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 maverick

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https://bugs.launchpad.net/bugs/708068

Title:
  usbserial problems