Description of problem: hp-probe claims no printer is present, /dev/usb/lp0 is there. Restarting hplip gives in /var/log/messages; hpiod: invalid product id string: Operation not permitted io/hpiod/system.cpp 491 hpiod: invalid serial id string: Operation not permitted io/hpiod/system.cpp 496 Version-Release number of selected component (if applicable): hplip-1.7.4a-2.fc8 How reproducible: Always Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: It used to complain (on June 24, machine kept up to date daily or thereabouts): hpiod: invalid product id string: Operation not permitted io/hpiod/device.cpp 690 hpiod: unable to Device::Open hp:/usb/hp_LaserJet_1320_series?serial=00BRGS559G1V io/hpiod/device.cpp 942 hp_LaserJet_1320_series?serial=00BRGS559G1V: INFO: open device failed; will retry in 30 seconds...
hp-info says (sorry I didn't get the garish colors right): [root@quelen ~]# hp-info HP Linux Imaging and Printing System (ver. 1.7.4a) Device Information Utility ver. 3.4 Copyright (c) 2001-7 Hewlett-Packard Development Company, LP This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to distribute it under certain conditions. See COPYING file for more details. warning: Inrecognized URI: ipp://lp-red.inf.utfsm.cl/printers/queue1 Using device: hp:/usb/hp_LaserJet_1320_series?serial=00BRGS559G1V hp:/usb/hp_LaserJet_1320_series?serial=00BRGS559G1V error: Unable to communicate with device: hp:/usb/hp_LaserJet_1320_series?serial=00BRGS559G1V error: Error opening device (Device not found). Exiting.
Created attachment 159429 [details] Output of hp-info
Comment on attachment 159429 [details] Output of hp-info Now (hplip-2.7.6-6.fc8) it recognizes the printer, but hp-testpage doesn't print anything.
With 2.7.6 there is an unresolved problem concerning device permissions. For the moment: 1. run lsusb and note which bus and which device the printer is 2. as root run 'chgrp lp /proc/bus/usb/???/???' (bus, device) 3. as root run 'chmod g+w /proc/bus/usb/???/???' (bus, device)
lsusb is in the usbutils package, which I did not have installed... got usbutils-0.71-2.1 Bus 001 Device 002: ID 03f0:1d17 Hewlett-Packard but after "ls -l /proc/bus/usb/001/002" the file doesn't exist anymore! kernel-2.6.23-0.29.rc0.git6.fc8, hplip-2.7.6-7.fc8 Rebooting. restorecond, Avahi and HAL fail to start (HAL hangs... reboot again). After the commands you gave, plus "service cups restart" a testpage I sent earlier showed up. And trying to print remotely, /proc/bus/usb/001/002 is gone again. After "hp-probe", "lpq", ... it is again there (?), with the right group and permissions. The remote print job just isn't handed over to the local cups unless I restart it again, but then /proc/bus/usb/001/002 is again gone... and reappears after "hp-probe", but the printjob is gone after "service cups restart" (as it isn't printed out). (Sorry for the mess).
OK, after today's round of updates (cups-1.3-0.b1.1.fc8, hplip-2.7.6-8.fc8) both on the machine where the printer is connected (x86_64, via USB) plus this notebook (i686) I can print again, both locally and remotely.