*** This bug is a duplicate of bug 569190 ***
https://bugs.launchpad.net/bugs/569190
The same thing on Karmic, but should be by adding sudo before lsusb:
$lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$sudo lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 004: ID 04b8:0005 Seiko Epson Corp. Stylus D88+
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The next is the result of output from a check printer from Lucid and Karmic
LUCID :
~$ sudo /usr/lib/cups/backend/usb
DEBUG: list_devices_libusb
DEBUG: usb_find_busses=5
DEBUG: usb_find_devices=6
direct usb://EPSON/Stylus%20T20E "EPSON Stylus T20E" "EPSON Stylus T20E"
"MFG:EPSON;CMD:ESCPL2,BDC,D4,D4PX;MDL:Stylus T20E;CLS:PRINTER;DES:EPSON Stylus
T20E;" ""
$sudo usb_printerid /dev/usb/lp0
GET_DEVICE_ID string:
MFG:EPSON;CMD:ESCPL2,BDC,D4,D4PX;MDL:Stylus T20E;CLS:PRINTER;DES:EPSON Stylus
T20E;
~$ sudo usb_printerid /dev/usb/lp1
Error: No such file or directory: can't open '/dev/usb/lp1'
~$ lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 04b8:0005 Seiko Epson Corp. Stylus D88+
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ls -l /dev/usb/lp* /dev/bus/usb/*/*
crw-rw-r-- 1 root root 189, 0 2010-05-10 20:31 /dev/bus/usb/001/001
crw-rw-r-- 1 root root 189, 128 2010-05-10 20:31 /dev/bus/usb/002/001
crw-rw-r-- 1 root lp 189, 129 2010-05-10 20:32 /dev/bus/usb/002/002
crw-rw-r-- 1 root root 189, 256 2010-05-10 20:31 /dev/bus/usb/003/001
crw-rw-r-- 1 root root 189, 384 2010-05-10 20:31 /dev/bus/usb/004/001
crw-rw-r-- 1 root root 189, 512 2010-05-10 20:31 /dev/bus/usb/005/001
crw-rw---- 1 root lp 180, 0 2010-05-10 20:32 /dev/usb/lp0
KARMIC KOALA :
$ sudo /usr/lib/cups/backend/usb
DEBUG: list_devices_libusb
DEBUG: usb_find_busses=5
DEBUG: usb_find_devices=6
direct usb://EPSON/Stylus%20T20E "EPSON Stylus T20E" "EPSON Stylus T20E"
"MFG:EPSON;CMD:ESCPL2,BDC,D4,D4PX;MDL:Stylus T20E;CLS:PRINTER;DES:EPSON Stylus
T20E;" ""
$ sudo usb_printerid /dev/usb/lp0
GET_DEVICE_ID string:
MFG:EPSON;CMD:ESCPL2,BDC,D4,D4PX;MDL:Stylus T20E;CLS:PRINTER;DES:EPSON Stylus
T20E;
$sudo lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 004: ID 04b8:0005 Seiko Epson Corp. Stylus D88+
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$ ls -l /dev/usb/lp* /dev/bus/usb/*/*
crw-rw-r-- 1 root vboxusers 189, 0 2010-05-11 15:09 /dev/bus/usb/001/001
crw-rw-r-- 1 root vboxusers 189, 128 2010-05-11 15:09 /dev/bus/usb/002/001
crw-rw---- 1 root lp 189, 131 2010-05-11 12:44 /dev/bus/usb/002/004
crw-rw-r-- 1 root vboxusers 189, 256 2010-05-11 15:09 /dev/bus/usb/003/001
crw-rw-r-- 1 root vboxusers 189, 384 2010-05-11 15:09 /dev/bus/usb/004/001
crw-rw-r-- 1 root vboxusers 189, 512 2010-05-11 15:09 /dev/bus/usb/005/001
crw-rw---- 1 root lp 180, 0 2010-05-11 12:44 /dev/usb/lp0
note : I installed virtualbox in karmic, ubuntu lucid in different
partition ( dual boot )
--
Epson T24 does not work in Lucid (while it worked in Karmic)
https://bugs.launchpad.net/bugs/576058
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