[Bug 556854] [NEW] serial ports malfunction on lucid

[Eric Firing]

Public bug reported:

Problem is found via simplest test of serial port send and receive using
two machines, "A" and "B".  "A" is running Hardy with a single-port
Keyspan USB-serial interface.  This has been used extensively with a
variety of applications. "B" is the present machine, with lucid updated
yesterday, with a built-in serial port, and with another Keyspan.
Connect "A" to B-builtin-port.  On "A":

cat /dev/ttyUSB0

on "B":

echo "test" > /dev/ttyS0

Result is OK: "A" gets the message, so the built-in port sends.  
Reverse the roles, however, and "B" does not get the message--it can't receive.

Same procedure, but with the Keyspan on "B": first, /dev/ttyUSB0 comes
up with odd default settings (57600   -icanon -echo -echoe, so use stty
to change them:

 stty -F /dev/ttyUSB0 9600
 stty -F /dev/ttyUSB0 icanon
 stty -F /dev/ttyUSB0 echo echoe

Then try the same test, with the result that "B-Keyspan" neither sends
nor receives.

We have not been using any built-in ports recently, but we have used the
Keyspan and other serial interfaces extensively on several machines with
Hardy and Jaunty.  On Karmic we found that the single-port Keyspan
worked for sending and receiving text, but failed with ymodem data
transfer attempts (which worked on Hardy and Jaunty), but the 4-port
Keyspan worked for both.

ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: I82801CAICH3 [Intel 82801CA-ICH3], device 0: Intel ICH [Intel 82801CA-ICH3]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  joolee     1388 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'I82801CAICH3'/'Intel 82801CA-ICH3 with CS4205 at irq 5'
   Mixer name	: 'Cirrus Logic CS4205 rev 3'
   Components	: 'AC97a:4352595b'
   Controls      : 42
   Simple ctrls  : 27
Date: Tue Apr  6 10:59:01 2010
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=255e6208-e420-4504-813a-5db0dd4c62d8
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
Lsusb:
 Bus 002 Device 002: ID 06cd:0121 Keyspan USA-19hs serial adapter
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Dell Computer Corporation Inspiron 8200
Package: linux-image (not installed)
PccardctlIdent:
 Socket 0:
   no product info available
 Socket 1:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
 Socket 1:
   no card
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-16-generic root=UUID=5d63e12e-7846-41bc-a38e-ad6a1f1c23ee ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
Regression: Yes
RelatedPackageVersions: linux-firmware 1.32
Reproducible: Yes
RfKill:
 
SourcePackage: linux
TestedUpstream: No
Uname: Linux 2.6.32-16-generic i686
dmi.bios.date: 01/07/2004
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A11
dmi.board.name: Inspiron 8200
dmi.board.vendor: Dell Computer Corporation
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias: dmi:bvnDellComputerCorporation:bvrA11:bd01/07/2004:svnDellComputerCorporation:pnInspiron8200:pvr:rvnDellComputerCorporation:rnInspiron8200:rvr:cvnDellComputerCorporation:ct8:cvr:
dmi.product.name: Inspiron 8200
dmi.sys.vendor: Dell Computer Corporation

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


** Tags: apport-bug i386 lucid needs-upstream-testing regression-potential

-- 
serial ports malfunction on lucid
https://bugs.launchpad.net/bugs/556854
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