We should indeed check if this is still a problem.
In my dmesg on 10.04 with a HP LaserJet 2200DN on cable plug-in:
[295072.380908] usblp1: USB Bidirectional printer dev 8 if 0 alt 1 proto 2 vid 0x03F0 pid 0x0217
[295073.503061] usb 4-1: usbfs: interface 0 claimed by usblp while 'usb' sets config #1
[295073.504937] usb[22618]: segfault at 0 ip 001cbdbb sp bf9b3e94 error 4 in libc-2.11.1.so[157000+153000]
[295073.506473] type=1503 audit(1278841151.903:852): operation="open" pid=22614 parent=22613 profile="/usr/sbin/cupsd" requested_mask="w::" denied_mask="w::" fsuid=0 ouid=0 name="/dev/ttyUSB0"
I guess the last line is related to another problem, but usblp gets still loaded when I attach the USB printer cable unless blacklisted and segfaults in libc aren't that cool, either. They stop appearing when I blacklist usblp.
The line
[295073.503061] usb 4-1: usbfs: interface 0 claimed by usblp while 'usb' sets config #1
does also appear on other 10.04 laptops I tested, but printing works fine there.
We should indeed check if this is still a problem.
In my dmesg on 10.04 with a HP LaserJet 2200DN on cable plug-in:
[295072.380908] usblp1: USB Bidirectional printer dev 8 if 0 alt 1 proto 2 vid 0x03F0 pid 0x0217 11.1.so[ 157000+ 153000] 1.903:852) : operation="open" pid=22614 parent=22613 profile= "/usr/sbin/ cupsd" requested_ mask="w: :" denied_mask="w::" fsuid=0 ouid=0 name="/dev/ttyUSB0"
[295073.503061] usb 4-1: usbfs: interface 0 claimed by usblp while 'usb' sets config #1
[295073.504937] usb[22618]: segfault at 0 ip 001cbdbb sp bf9b3e94 error 4 in libc-2.
[295073.506473] type=1503 audit(127884115
I guess the last line is related to another problem, but usblp gets still loaded when I attach the USB printer cable unless blacklisted and segfaults in libc aren't that cool, either. They stop appearing when I blacklist usblp.
The line
[295073.503061] usb 4-1: usbfs: interface 0 claimed by usblp while 'usb' sets config #1
does also appear on other 10.04 laptops I tested, but printing works fine there.