Public bug reported:
Binary package hint: linux-image-2.6.20-13-generic
Whenever I plug in a USB-serial converter and then try to open the
device for reading or writing, it always fail with the following error
from /var/log/messages:
---
Mar 28 16:47:19 foosa kernel: [26909.280000] usb 4-1.1.1.2: new full speed USB
device using ehci_hcd and address 11
Mar 28 16:47:19 foosa kernel: [26909.372000] usb 4-1.1.1.2: configuration #1
chosen from 1 choice
Mar 28 16:47:20 foosa kernel: [26909.892000] usbcore: registered new interface
driver usbserial
Mar 28 16:47:20 foosa kernel: [26909.892000] drivers/usb/serial/usb-serial.c:
USB Serial support registered for generic
Mar 28 16:47:20 foosa kernel: [26909.988000] usbcore: registered new interface
driver usbserial_generic
Mar 28 16:47:20 foosa kernel: [26909.988000] drivers/usb/serial/usb-serial.c:
USB Serial Driver core
Mar 28 16:47:20 foosa kernel: [26909.992000] drivers/usb/serial/usb-serial.c:
USB Serial support registered for FTDI USB Serial Device
Mar 28 16:47:20 foosa kernel: [26909.992000] ftdi_sio 4-1.1.1.2:1.0: FTDI USB
Serial Device converter detected
Mar 28 16:47:20 foosa kernel: [26909.992000] drivers/usb/serial/ftdi_sio.c:
Detected FT232BM
Mar 28 16:47:20 foosa kernel: [26909.996000] usb 4-1.1.1.2: FTDI USB Serial
Device converter now attached to ttyUSB0
Mar 28 16:47:20 foosa kernel: [26909.996000] usbcore: registered new interface
driver ftdi_sio
Mar 28 16:47:20 foosa kernel: [26909.996000] drivers/usb/serial/ftdi_sio.c:
v1.4.3:USB FTDI Serial Converters Driver
Mar 28 16:47:20 foosa kernel: [26910.256000] usb 4-1.1.1.2: usbfs: interface 0
claimed by ftdi_sio while 'brltty' sets config #1
Mar 28 16:47:20 foosa kernel: [26910.264000] ftdi_sio ttyUSB0: FTDI USB Serial
Device converter now disconnected from ttyUSB0
Mar 28 16:47:20 foosa kernel: [26910.264000] ftdi_sio 4-1.1.1.2:1.0: device
disconnected
Mar 28 16:49:51 foosa kernel: [27061.636000] usb 4-1.1.1.2: USB disconnect,
address 11
Mar 28 16:49:54 foosa kernel: [27063.884000] usb 4-1.1.1.2: new full speed USB
device using ehci_hcd and address 12
Mar 28 16:49:54 foosa kernel: [27063.976000] usb 4-1.1.1.2: configuration #1
chosen from 1 choice
Mar 28 16:49:54 foosa kernel: [27063.976000] ftdi_sio 4-1.1.1.2:1.0: FTDI USB
Serial Device converter detected
Mar 28 16:49:54 foosa kernel: [27063.976000] drivers/usb/serial/ftdi_sio.c:
Detected FT232BM
Mar 28 16:49:54 foosa kernel: [27063.976000] usb 4-1.1.1.2: FTDI USB Serial
Device converter now attached to ttyUSB0
Mar 28 16:49:58 foosa kernel: [27068.060000] usb 4-1.1.1.2: usbfs: interface 0
claimed by ftdi_sio while 'brltty' sets config #1
Mar 28 16:49:58 foosa kernel: [27068.060000] ftdi_sio ttyUSB0: FTDI USB Serial
Device converter now disconnected from ttyUSB0
Mar 28 16:49:58 foosa kernel: [27068.060000] ftdi_sio 4-1.1.1.2:1.0: device
disconnected
Mar 28 16:52:11 foosa kernel: [27201.664000] usb 4-1.1.1.2: USB disconnect,
address 12
Mar 28 16:52:30 foosa kernel: [27220.540000] usb 2-2: new full speed USB device
using uhci_hcd and address 2
Mar 28 16:52:31 foosa kernel: [27220.720000] usb 2-2: configuration #1 chosen
from 1 choice
Mar 28 16:52:31 foosa kernel: [27220.724000] ftdi_sio 2-2:1.0: FTDI USB Serial
Device converter detected
Mar 28 16:52:31 foosa kernel: [27220.724000] drivers/usb/serial/ftdi_sio.c:
Detected FT232BM
Mar 28 16:52:31 foosa kernel: [27220.724000] usb 2-2: FTDI USB Serial Device
converter now attached to ttyUSB0
Mar 28 16:52:35 foosa kernel: [27224.992000] usb 2-2: usbfs: interface 0
claimed by ftdi_sio while 'brltty' sets config #1
Mar 28 16:52:35 foosa kernel: [27224.996000] ftdi_sio ttyUSB0: FTDI USB Serial
Device converter now disconnected from ttyUSB0
Mar 28 16:52:35 foosa kernel: [27224.996000] ftdi_sio 2-2:1.0: device
disconnected
Mar 28 16:53:55 foosa kernel: [27305.496000] usb 2-2: USB disconnect, address 2
Mar 28 16:54:00 foosa kernel: [27310.368000] usb 2-2: new full speed USB device
using uhci_hcd and address 3
Mar 28 16:54:01 foosa kernel: [27310.548000] usb 2-2: configuration #1 chosen
from 1 choice
Mar 28 16:54:01 foosa kernel: [27310.552000] ftdi_sio 2-2:1.0: FTDI USB Serial
Device converter detected
Mar 28 16:54:01 foosa kernel: [27310.552000] drivers/usb/serial/ftdi_sio.c:
Detected FT232BM
Mar 28 16:54:01 foosa kernel: [27310.552000] usb 2-2: FTDI USB Serial Device
converter now attached to ttyUSB0
Mar 28 16:54:04 foosa kernel: [27314.292000] usb 2-2: usbfs: interface 0
claimed by ftdi_sio while 'brltty' sets config #1
Mar 28 16:54:04 foosa kernel: [27314.296000] ftdi_sio ttyUSB0: FTDI USB Serial
Device converter now disconnected from ttyUSB0
Mar 28 16:54:04 foosa kernel: [27314.296000] ftdi_sio 2-2:1.0: device
disconnected
---
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
USB serial converter kernel bug
https://launchpad.net/bugs/98570
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