USB + cups = no joy

spankmeister7 · Tux's lil' helper Joined: 10 Apr 2005 Posts: 76

This is odd. I've had this Epson Stylus Photo 1280 for some years now connected happily with CUPS. I haven't used the printer for quite some time during which I've upgraded Gentoo with new kernels at whatnot. Now I can't seem to get CUPS to recognize my printer.

First, the output of lsusb is:
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 04b8:0005 Seiko Epson Corp. Stylus D88+
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

So at least we know there is a connection here. Also, I do have USB printing enabled in the kernel. Dmesg shows:
[ 8898.201255] drivers/usb/core/file.c: looking for a minor, starting at 0
[ 8898.201330] usblp0: USB Bidirectional printer dev 3 if 0 alt 0 proto 2 vid 0x04B8 pid 0x0005
[ 8898.201340] drivers/usb/core/inode.c: creating file '003'

Okay.

So when when I log into CUPS in order to install the printer, there is no option for a USB printer. These are my options:
Local Printers: SCSI Printer
Discovered Network Printers:
Other Network Printers: Internet Printing Protocol (http)
Internet Printing Protocol (https)
Windows Printer via SAMBA
AppSocket/HP JetDirect
Internet Printing Protocol (ipp)
LPD/LPR Host or Printer
Backend Error Handler

... everything but USB.

What gives?

xaviermiller · Posted: Mon Oct 12, 2009 5:59 am Post subject:

Hello,

The new CUPS don't like usblp. You have to disable it (if it is not compiled as module), or unload usblp (rmmod usblp) in order to run CUPS.

That't the Apple way : changing the behaviour without warning the devs/users.
_________________
Kind regards,
Xavier Miller

spankmeister7 · Tux's lil' helper Joined: 10 Apr 2005 Posts: 76

I'm not sure what you mean. I have usb printing enabled in the kernel not as a module, but compiled in. Are you suggesting that I disable it?

xaviermiller · Posted: Mon Oct 12, 2009 6:26 am Post subject:

What says:

xaviermiller · Posted: Mon Oct 12, 2009 6:26 am Post subject:

And can you give us

spankmeister7 · Tux's lil' helper Joined: 10 Apr 2005 Posts: 76

Thanks for taking the time to help me. I appreciate it.

lsmod | grep usblp shows nothing. Like I said, I don't have it compiled as a module.

emerge -pv cups shows:

Calculating dependencies ... done!
[ebuild R ] net-print/cups-1.4.1 USE="X acl dbus gnutls java jpeg ldap pam perl php png python samba ssl tiff xinetd -debug -kerberos -slp -static -zeroconf" 0 kB

Total: 1 package (1 reinstall), Size of downloads: 0 kB

xaviermiller · Posted: Mon Oct 12, 2009 6:47 am Post subject:

So it seems OK.

Try to reinstall the printer within CUPS web interface (add printer / detect / ...). It should work.
_________________
Kind regards,
Xavier Miller

spankmeister7 · Tux's lil' helper Joined: 10 Apr 2005 Posts: 76

It still doesn't work.

Bother.

VoidMage · Watchman Joined: 14 Oct 2006 Posts: 6196

Actually, if you have it builtin, not as module, you'll probably need
to rebuild your kernel.
Also, you may need updated udev rules (I'm not sure, if they are already in the tree).
Read this.

spankmeister7 · Tux's lil' helper Joined: 10 Apr 2005 Posts: 76

Kameraden -

Thanks everyone for your help. I ended doing three more things to get printer to function:

(1) UNchecked the box in the kernel config for USB printing support.
(2) added 'blacklist usblp' to /etc/modprobe.d/blacklist.conf
(3) emerged the newest udev, sys-fs/udev-146-r1

And then *poof* it just began to work.

Thanks!