Public bug reported:
Binary package hint: minicom
[EMAIL PROTECTED]:~$ lsb_release -rd
Description: Ubuntu 8.04.1
Release: 8.04
[EMAIL PROTECTED]:~$ apt-cache policy minicom
minicom:
Installed: 2.3~rc1-2
Candidate: 2.3~rc1-2
Version table:
*** 2.3~rc1-2 0
500 http://us.archive.ubuntu.com hardy/main Packages
100 /var/lib/dpkg/status
The reason I included this next package is the cypress files are part of it.
[EMAIL PROTECTED]:/home/lbergman# apt-cache policy
linux-headers-2.6.24-19-generic
linux-headers-2.6.24-19-generic:
Installed: 2.6.24-19.34
Candidate: 2.6.24-19.34
Version table:
*** 2.6.24-19.34 0
500 http://us.archive.ubuntu.com hardy-updates/main Packages
100 /var/lib/dpkg/status
Ubuntu 8.04 updated today. I expected to get a blinking cursor and then to hit
enter a couple of times to start the connection. Instead, what I got follows.
The USB to Serial device appears to be recognized and configured
normally. a device is created at /dev/ttyUSB0. Upon starting minicom
with a config to use the ttyUSB0 port minicom freezes with the standard
"initializing modem" box on the screen and remains until the usb device
is unplugged. Immediately after unplugging the device the terminal
reports "Minicom: Device disappeared, aborting!" and returns control to
the terminal. I have not tried to use pyserial or any other serial
control program to check if it is a minicom or hardware issue. I could
find no markings to positively identify the hardware as being what is
reported via dmesg and messages. I looked through dozens of bugs and
found references to brltty and removed this package which had no impact
on the results.
Here is some output to shed some light.
minirc:
[EMAIL PROTECTED]:~$ cat /etc/minicom/minirc.dfl
# Machine-generated file - use "minicom -s" to change parameters.
pu port /dev/ttyUSB0
pu baudrate 9600
/etc/minicom/minicom.users:
The only uncommented entry is the following:
# Everyone has access to all configurations.
ALL
uname -a: Linux lbergman-laptop 2.6.24-19-generic #1 SMP Wed Jun 18 14:43:41
UTC 2008 i686 GNU/Linux
dmesg:
[ 5951.259108] usb 3-1: new low speed USB device using uhci_hcd and address 5
[ 5956.432452] usb 3-1: configuration #1 chosen from 1 choice
[ 5961.436910] cypress 3-1:1.0: HID->COM RS232 Adapter converter detected
[ 5961.440138] usb 3-1: HID->COM RS232 Adapter converter now attached to ttyUSB0
---ALL AFTER THIS IS UPON STARTING MINICOM ---
[ 5966.801688] /build/buildd/linux-2.6.24/drivers/usb/serial/cypress_m8.c:
cypress_serial_control - failed to retrieve serial line settings - -71
[ 5966.801699] /build/buildd/linux-2.6.24/drivers/usb/serial/cypress_m8.c:
cypress_m8 suspending failing port 0 - interval might be too short
[ 5966.804692] usb 3-1: cypress_write_int_callback - unexpected nonzero write
status received: -71
[ 5966.820649] usb 3-1: cypress_read_int_callback - unexpected nonzero read
status received: -84
/var/log/messages:
Jul 1 15:12:21 lbergman-laptop kernel: [ 6340.830785] usb 3-1: new low speed
USB device using uhci_hcd and address 6
Jul 1 15:12:26 lbergman-laptop kernel: [ 6346.004131] usb 3-1: configuration
#1 chosen from 1 choice
Jul 1 15:12:31 lbergman-laptop kernel: [ 6351.008591] cypress 3-1:1.0:
HID->COM RS232 Adapter converter detected
Jul 1 15:12:31 lbergman-laptop kernel: [ 6351.011834] usb 3-1: HID->COM RS232
Adapter converter now attached to ttyUSB0
lsusb:
[EMAIL PROTECTED]:~$ lsusb
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 007: ID 04b4:5500 Cypress Semiconductor Corp. HID->COM RS232
Adapter
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000
** Affects: minicom (Ubuntu)
Importance: Undecided
Status: New
--
USB-Serial adapter locks up minicom - cypress_m8
https://bugs.launchpad.net/bugs/244958
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