Bug 192548

Summary: Local printer on lpt1 won't work after CUPS update
Product: [Fedora] Fedora Reporter: Lieven <lieven.vanhulle>
Component: cupsAssignee: Tim Waugh <twaugh>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 5CC: fcdocs
Target Milestone: ---   
Target Release: ---   
Hardware: i586   
OS: Linux   
Whiteboard:
Fixed In Version: 1.2.1-1.2 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-05-23 22:08:09 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 192585    
Bug Blocks: 150223    
Attachments:
Description Flags
cupsd configuration file
none
cups conf file none

Description Lieven 2006-05-20 12:32:40 UTC 
Description of problem:
Printer problem since last update.
I have a laser QMS colorprinter on the network and a local hp950c on the 
parallel port.

The laser was still working fine after the CUPS update but the hp950 reported 
'printing is disabled" with lpc status.
Sending a printertask to the printer works but the status gets disabled.

I have removed the hp950 and re-installed it on the interface others: 
hp:/par/DESKJET_950C?device=/dev/parport0

NOT on Parallel LPT #1 ! That didn't work.


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.delete the parallel port printer
2.add the printer again but choose lpt#1 as local port instead of the
option:hp:/par/DESKJET_950C?device=/dev/parport0
3.try to print a test page, it will come in the cueue and the printer gets
disabled. Starting the printer will put the printertask again in the queue.
  
Actual results: 


Expected results:


Additional info:the only way to use the parallel port is to use the
option:'hp:/par/DESKJET_950C?device=/dev/parport0' when re-installing the
printer after the CUPS update.

regards,
Lieven
Comment 1 Tim Waugh 2006-05-20 16:40:32 UTC 
Thanks for the report.  I'll need a bit more information:

1. What does 'rpm -q cups' say?

2. At the point where you have just sent a print job and the queue becomes
disabled, what does 'lpstat -t' say?

3. It would also be useful to see the /var/log/cups/error_log file.  Thanks.
Comment 2 Lieven 2006-05-20 18:42:02 UTC 
'rpm -q cups' says : cups-1.2.0-1.1

before the print job 'lpstat -t' says:
scheduler is running
system default destination: hp950c
device for hp950c: parallel:/dev/lp0
device for laser: socket://192.168.1.152:35
hp950c accepting requests since za 20 mei 2006 20:35:21 CEST
laser accepting requests since do 18 mei 2006 19:48:54 CEST
printer hp950c is idle.  enabled since za 20 mei 2006 20:35:21 CEST
printer laser is idle.  enabled since do 18 mei 2006 19:48:54 CEST


After sending the print job 'lpstat -t' says:
scheduler is running
system default destination: hp950c
device for hp950c: parallel:/dev/lp0
device for laser: socket://192.168.1.152:35
hp950c accepting requests since za 20 mei 2006 20:37:47 CEST
laser accepting requests since do 18 mei 2006 19:48:54 CEST
printer hp950c disabled since za 20 mei 2006 20:37:47 CEST -
        Unable to open parallel port device file "/dev/lp0": Permission denied
printer laser is idle.  enabled since do 18 mei 2006 19:48:54 CEST
hp950c-172              root             15360   za 20 mei 2006 20:37:40 CEST


extract of the error_log:
E [20/May/2006:20:37:22 +0200] CUPS-Get-Default client-error-not-found: No
default printer
E [20/May/2006:20:37:27 +0200] CUPS-Get-Default client-error-not-found: No
default printer
E [20/May/2006:20:37:32 +0200] CUPS-Get-Default client-error-not-found: No
default printer
I [20/May/2006:20:37:40 +0200] Adding start banner page "none" to job 172.
I [20/May/2006:20:37:40 +0200] Job 172 queued on "hp950c" by "root".
I [20/May/2006:20:37:40 +0200] Started filter /usr/lib/cups/filter/pstops (PID
11507) for job 172.
I [20/May/2006:20:37:40 +0200] Started filter /usr/lib/cups/filter/foomatic-rip
(PID 11508) for job 172.
I [20/May/2006:20:37:40 +0200] Started backend /usr/lib/cups/backend/parallel
(PID 11509) for job 172.
E [20/May/2006:20:37:40 +0200] PID 11509 (/usr/lib/cups/backend/parallel)
stopped with status 1!
I [20/May/2006:20:37:40 +0200] Hint: Try setting the LogLevel to "debug" to find
out more.
E [20/May/2006:20:37:40 +0200] [Job 172] Unable to open parallel port device
file "/dev/lp0": Permission denied
E [20/May/2006:20:37:44 +0200] CUPS-Get-Default client-error-not-found: No
default printer
E [20/May/2006:20:37:47 +0200] PID 11508 (/usr/lib/cups/filter/foomatic-rip)
stopped with status 9!
I [20/May/2006:20:37:47 +0200] Hint: Try setting the LogLevel to "debug" to find
out more.
I [20/May/2006:20:37:47 +0200] [Job 172] Backend returned status 1 (failed)
I [20/May/2006:20:37:47 +0200] Saving printers.conf...
E [20/May/2006:20:37:49 +0200] CUPS-Get-Default client-error-not-found: No
default printer
E [20/May/2006:20:37:54 +0200] CUPS-Get-Default client-error-not-found: No
default printer
E [20/May/2006:20:37:59 +0200] CUPS-Get-Default client-error-not-found: No
default printer
E [20/May/2006:20:38:00 +0200] CUPS-Get-Default client-error-not-found: No
default printer
E [20/May/2006:20:38:04 +0200] CUPS-Get-Default client-error-not-found: No
default printer

regards,
Lieven
Comment 3 Tim Waugh 2006-05-20 22:09:32 UTC 
Okay.  Now what does this say?

ls -l /dev/lp0 /usr/lib/cups/backend/parallel
Comment 4 Lieven 2006-05-20 22:25:07 UTC 
ls -l /dev/lp0 /usr/lib/cups/backend/parallel gives:
crw-rw---- 1 root lp    6, 0 mei 19 07:27 /dev/lp0
-rwxr-xr-x 1 root root 15424 mei  9 00:06 /usr/lib/cups/backend/parallel
Comment 5 Tim Waugh 2006-05-20 22:35:35 UTC 
Hmm, that looks correct.  Could you attach /etc/cups/cupsd.conf please?
Comment 6 Lieven 2006-05-20 22:56:00 UTC 
Created attachment 129775 [details]
cupsd configuration file
Comment 7 Tim Waugh 2006-05-21 09:00:30 UTC 
Ah, KDEPrint has added 'Group sys' which is incorrect, and not what the default
as-shipped configuration file has.  Since the parallel backend no longer runs as
root, this prevents the backend having access to /dev/lp0 -- it needs 'lp' group
membership.

Until KDEPrint stops writing that sort of configuration file I guess we'll need
to switch the parallel backend back to running as root.
Comment 8 Lieven 2006-05-21 09:21:50 UTC 
I thought it had to be something like that because of the 'Permission denied'
message. So the problems possibly started after an update of the KDE system.
I did not try the lpt0 configuration with Gnome.


Thanks for your help and best regards,
Lieven
Comment 9 Tim Waugh 2006-05-22 13:52:27 UTC 
As a work-around, you can do this (as root):

  chmod 0700 /usr/lib/cups/backend/parallel
Comment 10 Tim Waugh 2006-05-23 08:24:18 UTC 
This should no longer be necessary with cups-1.2.1-1.1.
Comment 11 Tim Waugh 2006-05-23 09:33:21 UTC 
Please try 1.2.1-1.2 from here:

  http://people.redhat.com/twaugh/tmp/cups-fc5/

Does it work correctly for you now?
Comment 12 Lieven 2006-05-23 11:04:04 UTC 
Ok, I have installed the cups-1.2.1-1.2 and it now works fine with LPT0.

Thanks again

Lieven
Comment 13 David Fletcher 2006-05-23 20:13:29 UTC 
Created attachment 129888 [details]
cups conf file

Tim:- as requested. Hope it helps!
Comment 14 Tim Waugh 2006-05-23 22:08:09 UTC 
David: great, thanks.  Yes, this has the same root cause and should be fixed in
1.2.1-1.2.
Comment 15 David Fletcher 2006-05-23 22:17:17 UTC 
Tim,

I just received the update.

KDE Menu-Settings-PrintingManager test print now works with USB connection.

Thanks.

Time for bed.

I'll probably do some more with it tomorrow.