USB-Serial adapter locks up minicom - cypress_m8
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: minicom
lbergman@
Description: Ubuntu 8.04.1
Release: 8.04
lbergman@
minicom:
Installed: 2.3~rc1-2
Candidate: 2.3~rc1-2
Version table:
*** 2.3~rc1-2 0
500 http://
100 /var/lib/
The reason I included this next package is the cypress files are part of it.
root@lbergman-
linux-headers-
Installed: 2.6.24-19.34
Candidate: 2.6.24-19.34
Version table:
*** 2.6.24-19.34 0
500 http://
100 /var/lib/
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:
lbergman@
# Machine-generated file - use "minicom -s" to change parameters.
pu port /dev/ttyUSB0
pu baudrate 9600
/etc/minicom/
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/
[ 5966.801699] /build/
[ 5966.804692] usb 3-1: cypress_
[ 5966.820649] usb 3-1: cypress_
/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:
lbergman@
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) → linux (Ubuntu) |
Hi Lewis,
This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http:// cdimage. ubuntu. com/releases/ lucid.
If it remains an issue, could you run the following command from a Terminal (Applications- >Accessories- >Terminal) . It will automatically gather and attach updated debug information to this report.
apport-collect -p linux 244958
Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https:/ /wiki.ubuntu. com/KernelMainl ineBuilds . Once you've tested the upstream kernel, please remove the 'needs- upstream- testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs- upstream- testing' text. Please let us know your results.
Thanks in advance.
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