Ok, I have figured out the underlying problem. It all boils down to a permission problem. Sorry for the misleading information about the uri being improper.
As mentoined in my original report, I have a multifunction device, which also acts as scanner. This property results in giving the device node /dev/usb/lp0 a group ownership of scanner. This happens through the sane udev rule file /etc/udev/rules.d/45-libsane.rules, where a mask of 664 and a GROUP of scanner is set for this device. In feisty it was sufficient to add the group scanner to the lp system account as additional group, but now the group for executing external programs out of cups is fixed to lp (or configurable via cupsd.conf, but only one group can be specified.). Changing the mask from 664 to 666 in /etc/udev/rules.d/45-libsane.rules solved the problem and i am now back to printing again. But this is a more basic problem in regard to multifunction devices in general, where as soon as you have a ultifunction device you won't be able to print anymore. My fix for the time being is to leave the /etc/udev/rules.d/45-libsane.rules file untouched and create a new file /etc/udev/rules.d/99-epsonscanner.rules which acts last and sets the mask to 666. I hope this information helps. regards Martin Lubich -- Epson DX4850 usb printer does not work after upgrading from 7.04 to 7.10 https://bugs.launchpad.net/bugs/154833 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
