Red Hat Bugzilla – Full Text Bug Listing
|Summary:||Cannot share my printer|
|Product:||[Fedora] Fedora||Reporter:||Dawid Zamirski <dzrudy>|
|Component:||cups||Assignee:||Tim Waugh <twaugh>|
|Status:||CLOSED CURRENTRELEASE||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Fixed In Version:||1.3.5-2.fc8||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2008-01-27 02:18:43 EST||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Bug Depends On:|
Description Dawid Zamirski 2007-12-18 15:03:52 EST
Description of problem: My printer is not visible on the local network after sharing it using system-config-printer on the host machine. I have to restart cups service on the host machine to make it visible to the client machines. Any changes in system-config-printer make it disappear until cups service is restarted. Version-Release number of selected component (if applicable): cups-1.3.4-4.fc8 system-config-printer-0.7.74.4-3.fc8 How reproducible: Always Steps to Reproduce: 1. Open system-config-printer on the host machine and enable printer sharing 2. After pressing Apply button, several "cupsdAuthorize: Local authentication certificate not found" messages appear in cups error_log. 3. Open system-config-printer on a client machine, and the shared printer is not visible. Actual results: The printer does not appear in system-config-printer of a client machine. Expected results: The shared printer should be available in Remote Printers section of system-config-printer on a client machine. Additional info: Restarting cups service on the host machine makes the printer visible to client machines. However, after using the system-config-printer on the host machine and applying any changes makes shared printer disappear until cups service is restarted again.
Comment 1 Tim Waugh 2007-12-20 07:11:46 EST
I need some additional files and pieces of information: 1. Please attach the error_log containing the messages 2. Please attach /etc/cups/cupsd.conf 3. Which checkbox are you referring to by "enable printer sharing": is this the "Share published printers connected to this system" checkbox in the Server Settings page, or a different one?
Comment 2 Dawid Zamirski 2008-01-07 15:52:12 EST
Created attachment 291009 [details] CUPS error log. CUPS error log after disabling and the enabling the 'Share published printers connected to this system' check box. Notice the cupsdAuthorize errors at the end of the file.
Comment 3 Dawid Zamirski 2008-01-07 15:56:23 EST
Created attachment 291010 [details] cupsd.conf My current cupsd.conf file - it was never edited manually - only through s-c-printer.
Comment 4 Dawid Zamirski 2008-01-07 16:01:09 EST
Yes, I'm referring to the "Share published printers connected to this system" checkbox. Everytim I change its state I get cupsdAuthorize errors in the log file and the printer diappears on the client machine. Only restarting cups service makes it re-appear. Also, the printer is not visible right after system reboot - I have to restart cups service manually in s-c-services so that the printer is visible to client machines.
Comment 5 Dawid Zamirski 2008-01-07 16:05:01 EST
I have just noticed the following lines in my "messages" log after restarting cups service. I'm not sure if these are related: Jan 7 15:54:33 athlon64 cupsd: *** WARNING *** The program 'cupsd' uses the Apple Bonjour compatibility layer of Avahi. Jan 7 15:54:33 athlon64 cupsd: *** WARNING *** Please fix your application to use the native API of Avahi! Jan 7 15:54:33 athlon64 cupsd: *** WARNING *** For more information see <http://0pointer.de/avahi-compat?s=libdns_sd&e=cupsd>
Comment 6 Tim Waugh 2008-01-10 13:03:42 EST
They are not related.
Comment 7 Tim Waugh 2008-01-11 12:18:01 EST
What does 'ls -l /var/run/cups/certs/' say? I have to say I cannot get this to happen here. Please turn *on* the "Save debugging information for troubleshooting" checkbox and turn *off* the "Share published printers connected to this system" checkbox, apply the changes and close system-config-printer. Then, run a terminal window and become root using 'su -' and: 1. Stop CUPS /sbin/service cups stop 2. Clear the error log >/var/log/cups/error_log 3. Start CUPS again /sbin/service cups start Please follow the steps you use to cause this problem to occur, and attach the resulting /var/log/cups/error_log file. Thanks.
Comment 8 Dawid Zamirski 2008-01-12 18:41:04 EST
[root@athlon64 /]# ls -l /var/run/cups/certs/ total 8 -r--r-----+ 1 root sys 32 2008-01-12 18:28 0 [root@athlon64 /]#
Comment 9 Dawid Zamirski 2008-01-12 18:45:08 EST
Created attachment 291480 [details] error_log after performing the steps in comment #7
Comment 10 Tim Waugh 2008-01-15 12:47:54 EST
The "Local authentication certificate not found" message is due to the CUPS server removing all its local certificates when it stops and re-reads its configuration, and this is harmless. So we are left with the problem that your shared printers do not show up to clients. How long have you tried leaving it before checking that the client has discovered the shared printers? It may take up to 30 seconds.
Comment 11 Dawid Zamirski 2008-01-17 01:19:57 EST
I have made several tests today and the printer remains invisible even if I wait for more than 30s. What I have found today, is that when using the cups web interface on localhost:631 changing the state of the checkbox works ok - the printer is made visible to the clients immediately. When applying changes to the "Share published printers.." checkbox, in the web interface, there's a message that the cups server is being restarted - that's probably why it works. Also there's no "Local authentication certificate not found" messages in the logs.
Comment 12 Tim Waugh 2008-01-18 10:12:59 EST
The 'cups server being restarted' message isn't really different at all -- the CUPS server restarts when the settings are changed. Nonetheless, I will make a test update of system-config-printer that avoids these 'certificate not found' messages, and we can see if that makes a difference. You will see a note here when that update is ready. In the mean time, starting from printers not being shared, does 'cupsctl --share-printers' have the same effect as using system-config-printer, or as using the web interface?
Comment 13 Dawid Zamirski 2008-01-18 14:23:49 EST
Nope, cupsctl --share-printers does not work - the printer remains invisible - and there's no 'certificate not found' in the logs when using cupctl.
Comment 14 Tim Waugh 2008-01-21 08:10:01 EST
Please try the test update, which I believe should fix this problem: yum --enablerepo=updates-testing update 'cups*'
Comment 15 Dawid Zamirski 2008-01-21 14:11:42 EST
Yes, the cups version from updates-testing repo works! Thank you! :-)
Comment 16 Fedora Update System 2008-01-22 10:31:21 EST
cups-1.3.5-2.fc8 has been pushed to the Fedora 8 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update cups'
Comment 17 Fedora Update System 2008-01-27 02:18:33 EST
cups-1.3.5-2.fc8 has been pushed to the Fedora 8 stable repository. If problems still persist, please make note of it in this bug report.