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I am reinstalling Slack 12.0 to accomodate XP (-useless). I am having problems defining my printer via cups on this install and have run out of ideas. I see too that others have a similar problem i.e. /backend/socket failed. I have not seen a resolutions. My cups is 1.2. When I get to the "Device:" entry there are several options: 1) AppSocket/Hp JetDirect, 2) Bluetooth Printer, 3) Internet Printint Protocol (http), 4) same as 3) but for (ipp), 5) LPD/LPR host or Printer, 6) SCSI Printer, 7) Serial Port #1, 8) same as 7) but #2, 8) Windows Printer via Samba. I rule out 8 and 2 as the printer is a USB Canon iP1800. My hypothesis is that my problem is here. When I try serial and a couple of others I get the error about "socket failed".
A) Can soneone explain this entry and the Device URI which follows with "socket" in the entry window?
B) Is this socket failing resolved in 1.3?
C) I cannot use the initial offer to add the Canon printer to the parallel port, so where is the USB option? It worked the last time GGggrRRRR!
If anyone wonders if I have the correct software for the iP1800, the answer is yes. See canon-asia.com and follow the links for the ip1880.
BTW after configuring printer in CUPS, I kill the running cupsd, restart the rc.cups, execute: lpadmin -E -p <printername>, lp -d <printername> /etc/motd, then run:
lpq -al and lpstat -t. lpstat shows the error.
Thanks, Alien Bob, but NO that is similar to the info I mentioned about canon-asia.com where one gets the iP1800 drivers from canon. Wonder why Canon US does not supply a link?
The problem comes in CUPS. It is difficult to know what to enter for device as there is NO USB entry to use and some entries have no meaning, as far as I can tell. BUT! on my 1st install it all went tickety-boo well (except I did not write down how I did it- 1st law of *nix) with CUPS and was able to print via CUPS.
Any help in that area?
In this most recent version of cups it seems that you only get "usb" as an option if cups _recognizes_ a printer connected to a usb port (in older versions you got a dozen or so "usb" entries in devices regardless of what you had attached). So that means cups is not recognizing the printer (assuming it is connected), which means the driver is probably not installed correctly.
I am confused about the driver not recognizing the connected usb printer.
At times when trying to configure the printer, cups does initially recognize the printer not only as a Canon but thinks it is on the parallel printer port.
I gave up and went back to command line input. Now it thinks the printer is not connected. I shut down and immediately brought up XP which prints.
Here is my lpstat -t:
scheduler is running
system default destination: IP1800
device for IP1800: usb:/dev/usb/lp0
IP1800 accepting requests since Sun 09 Sep 2007 10:42:49 PM PDT
printer IP1800 now printing IP1800-8. enabled since Sun 09 Sep 2007 10:42:49 PM PDT
Printer not connected; will retry in 30 seconds...
IP1800-8 root 1024 Sun 09 Sep 2007 10:42:49 PM PDT
Help would be appreciated!
Ooops! Just learned that this is endemic to cups 1.2 released with Slackware 12.0
BELLS WHISTLES FIREWORKS!!
Apparently, this should have been known to the Slackware distribution team as it is a bug report on Debian #383092 (should have written that down when I found it so number may be inaccurate). This effects Epsons and has also effected Canon 4300.
Two solutions are available: 1) Release 1.3 of cups is supposed to have corrected this (promises promises, sorry just bitter I think) or 2) some have had luck purging the info and redoing the adding of the printer. I will try 2) and respond if I am successful.
Here is what I did. Remember this is for Cups 1.2.
I removed the printer via Cups at http://localhost:631/admin
I re-installed the printer with the same features as previous unsuccessful attempt used.
That had NO effect still got the printer not connected.
Changed the resolution from the 600 dpi to 300 dpi as I have learned this sometimes works. It did not. lpoptions command was accepted but the lpoptions -l did not display any 300 dpi indication, i.e. I still got *600 for resolution which I take to be the optimal setting and the * to indicate the current value.
On a whim! I used the localhost:631 and modified the settings (did not make any changes) (at least they are there now where some (like usb device) was not when I tried to use this directly).
Then out of desperation I requested a test page to be printed. When the printer came alive I nearly wet myself. Imagine my glee when it printed a page! Then I printed the motd and it too worked. HAPPY CAMPER!!
The bug is not unique to Debian but to CUPS. My reference to Debian was for reference only as I had no CUPS number.
BTW further probing has revealed that when defining the first printer the device "usb:/dev/usb/lp0" via command line it will "apparently" autoconvert it to: cnij_usb:/dev/usb/lp0 but not on subsequent printers such as bwhigh bwlow. This was frustrating until I stumbled onto it as it produced the "Printer not connected" error.
Also know that one is defined the "Device" input via http://localhost:631 now has 2 canon USB options but only one can be effectively used, the one with readback in it.
Also discovered much to my dismay that there are 2 types of options when using lpoptions.
lpoptions -p myprinter -l produces a ":" separated name: value|value|value while
lpoptions -p myprinter produces a "=" speparated name=value list of a different set.
While experimenting I defined a name string with the -o using = and now cannot get rid of it even after deleting the printer. if I re-use the printer name that string is still there and is preventing me from creating a usable printer/queue
Do you know how to remove such strings? I tried using a null value but it did not work.
It is probably obvious I am trying to provide options unique to a printer that are not supplied in CUPS.
cups packages on my system:
root@slack64:~# ls -1 /var/log/packages/cups*
canon packages on my systen:
root@slack64:~# ls -1 /var/log/packages/*rpm2txz*
root@slack64:~# lpinfo -v
All works fine now
Last edited by slackcracker; 03-09-2010 at 02:52 PM.
6- install with installpkg these packages
7. if you now try to print you get this error:
E [22/Oct/2011:04:40:34 +0200] Unable to execute /usr/lib64/cups/filter/pstocanonij: No such file or directory
because cups try to find this filter in lib64 but it is in lib (i386)
8. Now you have to edit /etc/cups/cupsd.conf and add the line
9. restart cups with: /etc/rc.d/rc.cups restart ,now you should be ready to print, enjoy slackware ;-)
If there are anyway problems see the log with: tail -f /var/log/cups/error_log
If you want to see more output change the log level in /etc/cups/cupsd.conf to LogLevel debug or LogLevel debug2
Last edited by slackcracker; 10-22-2011 at 12:39 AM.