Can't auto config 2 USB serial port
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
udev (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
Plug in 2 USB serial, run "lsusb":
...
Bus 004 Device 002: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x Composite Device
Bus 005 Device 002: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x Composite Device
...
sudo lsusb -v -s :002:
Bus 004 Device 002: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x Composite Device
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x10c4 Cygnal Integrated Products, Inc.
idProduct 0xea60 CP210x Composite Device
bcdDevice 1.00
iManufacturer 1 Silicon Labs
iProduct 2 CP2102 USB to UART Bridge Controller
iSerial 3 0044
bNumConfigura
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurat
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescript
bInterfac
bAlternat
bNumEndpoints 2
bInterfac
bInterfac
bInterfac
iInterface 2 CP2102 USB to UART Bridge Controller
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Device Status: 0x0000
(Bus Powered)
Bus 005 Device 002: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x Composite Device
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x10c4 Cygnal Integrated Products, Inc.
idProduct 0xea60 CP210x Composite Device
bcdDevice 1.00
iManufacturer 1 Silicon Labs
iProduct 2 USB to UART Test version HW1.2
iSerial 3 0045
bNumConfigura
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurat
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescript
bInterfac
bAlternat
bNumEndpoints 2
bInterfac
bInterfac
bInterfac
iInterface 2 USB to UART Test version HW1.2
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Device Status: 0x0000
(Bus Powered)
BUT
~$ ls -l /dev/|grep -i usb|grep tty
crw-rw---- 1 root dialout 188, 0 2011-09-27 10:39 ttyUSB0
=================
Just ONE USB tty device was config.
If plug in/out few times, sometime there are not any USB tty device was config( in fact 2 USB serial cable was connected to PC)
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: udev 173-0ubuntu3
ProcVersionSign
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu1
Architecture: i386
CheckboxSubmission: bb3c63e4987943d
CheckboxSystem: bb422ca46d02494
CustomUdevRuleF
Date: Tue Sep 27 10:48:28 2011
MachineType: LENOVO 77328QC
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcEnviron:
LANGUAGE=en
PATH=(custom, user)
LANG=zh_CN.utf8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: udev
UpgradeStatus: Upgraded to oneiric on 2011-06-02 (116 days ago)
dmi.bios.date: 08/22/2007
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LET51WW (1.21 )
dmi.board.name: 77328QC
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 77328QC
dmi.product.
dmi.sys.vendor: LENOVO
Status changed to 'Confirmed' because the bug affects multiple users.