** Description changed:
When I connect PL2303 based serial converter after computer boot system
not recognize pl2303. Device is visible by lspci but usb /dev/ttyUSB0
device isnt`t create. When we disconnect PL2303 serial converter from
USB port, and connect again PL2303 device is created correctly and all
works OK.
This is lspci dump after first connection PL2303 adapter to USB port:
Bus 005 Device 001: ID 0000:0000
Bus 003 Device 004: ID 067b:2303
Bus 003 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 003: ID 03f0:171d Hewlett-Packard
Bus 001 Device 001: ID 0000:0000
And dump of /proc/bus/usb/devices
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=067b ProdID=2303 Rev= 3.00
S: Manufacturer=Prolific Technology Inc.
S: Product=USB-Serial Controller
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 10 Ivl=1ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=83(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
lspci and /proc/bus/usb/devices after second connection:
Bus 005 Device 001: ID 0000:0000
Bus 003 Device 005: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 003 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 003: ID 03f0:171d Hewlett-Packard
Bus 001 Device 001: ID 0000:0000
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=067b ProdID=2303 Rev= 3.00
S: Manufacturer=Prolific Technology Inc.
S: Product=USB-Serial Controller
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=pl2303
E: Ad=81(I) Atr=03(Int.) MxPS= 10 Ivl=1ms
- E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms[ 307.913886] usbcore:
deregistering interface driver pl2303
+ E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
And all dmesg:
<---- first plug
[ 311.175758]
/build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/usb-serial.c: USB
Serial support registered for pl2303
[ 311.176583] usbcore: registered new interface driver pl2303
[ 311.176589]
/build/buildd/linux-source-2.6.22-2.6.22/drivers/usb/serial/pl2303.c: Prolific
PL2303 USB to serial adaptor driver
[ 319.971869] usb 3-1: USB disconnect, address 3
[
<--- second plug
321.794840] usb 3-1: new full speed USB device using uhci_hcd and address 4
[ 321.957093] usb 3-1: configuration #1 chosen from 1 choice
[ 321.960025] pl2303 3-1:1.0: pl2303 converter detected
- I using ubunt fiesty fawn on AMD64 (Linux luccktop 2.6.22-14-generic #1
- SMP Thu Jan 31 23:33:13 UTC 2008 x86_64 GNU/Linux)
+ I using ubuntu gutsy gibbon (7.10) on AMD64 (Linux luccktop
+ 2.6.22-14-generic #1 SMP Thu Jan 31 23:33:13 UTC 2008 x86_64 GNU/Linux)
--
PL2303 kernel driver not detect serial converter after first connection to USB
port
https://bugs.launchpad.net/bugs/190642
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