berend.de.schouwer wrote on 1-MAY-2019 16:37:59.62
On Wed, 2019-05-01 at 11:48 +0200, Jouk Jansen wrote:
If I try to reconfigure the printer via cups and indicate that the printer is to be shared, I get the message that sharing is not possible for a Kerberos-printer. On this system I never configured Kerberos. So what is happening here?
I've got an identical problem. I've filed a bug report here: https://bugzilla.redhat.com/show_bug.cgi?id=1700791 I think it was caused by: https://bugzilla.redhat.com/show_bug.cgi?id=1662408 I don't think it's triggered by "Shared"; but rather by "AuthInfoRequired" that changes from None or Username,Password to Negotiate. To work around it, here's what I did:
- move /usr/lib/cups/backend/smb to /usr/lib/cups/backend/smb.real
- write a script /usr/lib/cups/backend/smb to replace it:
#!/bin/sh cat - | /usr/lib/cups/backend/smb.real "${@}" Remember to make it executable. You'll notice this just calls smb.real. The actual change is that this script exits with 0, so Cups never sees an error. Suddenly it doesn't trigger AuthInfoRequired, and actually prints. NOTE: this will be overwritten every time cups is upgraded. The workaround can be smarter if you change DeviceURI to something else (say smbworks://) and create a script accordingly. I do this at work for a printer that has every non-SMB port firewalled.
If I do the smb.real trick, I'm able to change the "Shared" and the "AuthInfoRequied" but even now I cannot print. In the "gnome-control=center" the jobs end up "paused". I get a pop-up-bubbel in my gnome session telling me that "credentials are required". I thought they should be picked up from the DeviceURL.
Jouk
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On Thu, 2019-05-02 at 09:23 +0200, Jouk Jansen wrote:
berend.de.schouwer wrote on 1-MAY-2019 16:37:59.62
On Wed, 2019-05-01 at 11:48 +0200, Jouk Jansen wrote:
If I try to reconfigure the printer via cups and indicate that the printer is to be shared, I get the message that sharing is not possible for a Kerberos-printer. On this system I never configured Kerberos. So what is happening here?
I've got an identical problem. I've filed a bug report here: https://bugzilla.redhat.com/show_bug.cgi?id=1700791 I think it was caused by: https://bugzilla.redhat.com/show_bug.cgi?id=1662408 I don't think it's triggered by "Shared"; but rather by "AuthInfoRequired" that changes from None or Username,Password to Negotiate. To work around it, here's what I did:
- move /usr/lib/cups/backend/smb to /usr/lib/cups/backend/smb.real
- write a script /usr/lib/cups/backend/smb to replace it:
#!/bin/sh cat - | /usr/lib/cups/backend/smb.real "${@}" Remember to make it executable. You'll notice this just calls smb.real. The actual change is that this script exits with 0, so Cups never sees an error. Suddenly it doesn't trigger AuthInfoRequired, and actually prints. NOTE: this will be overwritten every time cups is upgraded. The workaround can be smarter if you change DeviceURI to something else (say smbworks://) and create a script accordingly. I do this at work for a printer that has every non-SMB port firewalled.
If I do the smb.real trick, I'm able to change the "Shared" and the "AuthInfoRequied" but even now I cannot print. In the "gnome-control=center" the jobs end up "paused". I get a pop-up-bubbel in my gnome session telling me that "credentials are required". I thought they should be picked up from the DeviceURL.
They should, they do for me.
Old jobs are still stuck in paused.
You can see DeviceURI in the logs. You may need to change loglevel in cupsd.conf to debug, because it can be a security risk to log passwords.
You can also try modifying the script to:
#!/bin/sh /usr/bin/logger -t "${0}[${$}]" "Called with [${@}]" /usr/bin/logger -t "${0}[${$}]" "DEVICE_URI=[${DEVICE_URI}]" cat - | /usr/lib/cups/backend/smb.real "${@}"
You may need to restart cups, or re-enable the printer (cupsenable MY- PRINTER-NAME)
Sorry I can't be more help.
-
Berend De Schouwer -
Jouk Jansen