CUPS problem: IPP request failed for unknow reason

unicornop · 05-26-2006, 06:33 AM

*Sigh* this is a difficult one, I hope someone else knows more than me.

Since I've updated CUPS via yum a few weeks ago, I am no more able to print - this is under Fedora Core 4.
Finally desperately I upgraded to Fedora Core 5 (I'll save you the details

).

But now I'm still not able.
Always the same message when trying to configure the printer, restarting the print manager, etc:

"Unable to retrieve the printer list. Error message received from manager: Connection to CUPS server failed. Check that the CUPS server is correctly installed and running. Error: the IPP request failed for an unknown reason."

Remark 1: yes CUPS is installed, i.e. rpm says:
% rpm -qa | grep cups
cups-1.2.1-1.2
hal-cups-utils-0.5.5-1.2.fc5.2
cups-libs-1.2.1-1.2
libgnomecups-0.2.2-3.2.1

Remark 2: yes the CUPS server is running, at least ps says:
% ps -Af | grep cups
root 2199 1 0 09:59 ? 00:00:00 cupsd
root 3269 1 0 10:00 ? 00:00:00 cups-config-daemon

Remark 3: no I can't administer printers via web-interface, even when logged in as root surfing to "localhost:631" tells me: "403 Forbidden". And my firewall is completely disabled.
The etc/cups/cupsd.conf-file is ending with these lines:
# Lines below are automatically generated - DO NOT EDIT
<Location /printers/mijnprt>
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
AuthType None
</Location>
Browsing On
BrowseProtocols cups
BrowseOrder Deny,Allow
BrowseAllow from @LOCAL
Listen 127.0.0.1:631

And so... help!! Anyone able to help me out of this labyrint ??

marozsas · 05-26-2006, 07:21 AM

Yes, I had the same problem too. It is a bug in SELinux (which is a pain in the ass, BTW).

To confirm that:

Code:

# setenforce Permissive
# rccups restart

If cups starts as expected, than you can put SELinux in Permissive state until a fix for cups becomes available. Edit /etc/selinux/config and change the line "SELINUX=enforcing to "SELINUX=permissive".

marozsas · 05-26-2006, 07:24 AM

Sorry, "rccups" is an alias in my system. The default command is "service cups restart".

unicornop · 05-26-2006, 11:23 AM

[QUOTE=marozsas]Yes, I had the same problem too. It is a bug in SELinux (which is a pain in the ass, BTW).

To confirm that:

Code:

# setenforce Permissive
# rccups restart

I tried but that seems not to be the cause:

Code:

%  setenforce Permissive
setenforce: SELinux is disabled
% service cups restart
Stopping cups:                                             [  OK  ]
Starting cups:                                             [  OK  ]

... and the problem is still existing.

Listing /etc/selinux/config:

Code:

# SELINUX= can take one of these three values:
#       enforcing - SELinux security policy is enforced.
#       permissive - SELinux prints warnings instead of enforcing.
#       disabled - SELinux is fully disabled.
SELINUX=Disabled
# SELINUXTYPE= type of policy in use. Possible values are:
#       targeted - Only targeted network daemons are protected.
#       strict - Full SELinux protection.
SELINUXTYPE=targeted
# SETLOCALDEFS= Check local definition changes
SETLOCALDEFS=0

Other suggestions?

marozsas · 05-26-2006, 11:49 AM

Quote:

Originally Posted by unicornop

... and the problem is still existing.

...strange. I had the same problem, same error message and disabling SElinux works for me.

Are your packages updated ?

Code:

bash-3.1$ rpm -qa | grep -iE "cups|policy"
selinux-policy-targeted-2.2.40-1.fc5
libgnomecups-0.2.2-3.2.1
policycoreutils-1.30.8-1.fc5
cups-libs-1.2.1-1.2
selinux-policy-2.2.40-1.fc5
cups-1.2.1-1.2
hal-cups-utils-0.5.5-1.2.fc5.2
bash-3.1$

PS: Sorry, I can see you have the packages updated, based ib your first post.

marozsas · 05-26-2006, 11:58 AM

May be some bug when upgrading for FC4 to FC5. Mine was a fresh install.
Try to remove the packages cups, cups-libs and hal-cups-utils and re-install the same packages again.

unicornop · 05-26-2006, 01:35 PM

Quote:

Originally Posted by marozsas

May be some bug when upgrading for FC4 to FC5. Mine was a fresh install.
Try to remove the packages cups, cups-libs and hal-cups-utils and re-install the same packages again.

I considered doing that as well, but it's a last last resort for me, as this implies uninstalling and installing 38 other softwares - such as evolution, gimp, open-office, etc etc.
I'm afraid it will take days to get it back ok again.

Asking yum to remove cups, it tells me:

Code:

Removing:
 cups                    i386       1:1.2.1-1.2      installed         7.5 M
Removing for dependencies:
 desktop-printing        i386       0.19-6           installed         263 k
 eel2                    i386       2.14.1-1.fc5.1   installed         1.2 M
 evolution               i386       2.6.1-1.fc5.2    installed          33 M
 gdm                     i386       1:2.14.4-1.fc5.1  installed         9.9 M
 gimp                    i386       2:2.2.11-0.fc5.3  installed          26 M
 gimp-data-extras        noarch     2.0.1-1.1        installed         7.6 M
 gimp-gap                i386       2.0.2-4          installed         2.9 M
 gimp-help               noarch     2-0.1.0.10.0.fc5.1  installed          64 M
 gimp-print-plugin       i386       4.2.7-16         installed          97 k
 gnome-games             i386       1:2.14.1-1.fc5.3  installed          18 M
 gnome-media             i386       2.14.0-2         installed         5.6 M
 gthumb                  i386       2.7.5.1-1.fc5.1  installed         5.6 M
 gtkhtml3                i386       3.10.1-1.fc5.1   installed         2.7 M
 hal-cups-utils          i386       0.5.5-1.2.fc5.2  installed          83 k
 libgnomecups            i386       0.2.2-3.2.1      installed         215 k
 libgnomeprint22         i386       2.12.1-4.2       installed         1.4 M
 libgnomeprintui22       i386       2.12.1-1.2.1     installed         1.0 M
 librsvg2                i386       2.14.4-1.fc5.1   installed         421 k
 nautilus                i386       2.14.1-1.fc5.1   installed          11 M
 nautilus-cd-burner      i386       2.14.1-1.fc5.1   installed         1.5 M
 openoffice.org-calc     i386       1:2.0.2-5.9.2    installed          15 M
 openoffice.org-core     i386       1:2.0.2-5.9.2    installed         204 M
 openoffice.org-draw     i386       1:2.0.2-5.9.2    installed         2.7 M
 openoffice.org-graphicfilter  i386       1:2.0.2-5.9.2    installed         365 k
 openoffice.org-impress  i386       1:2.0.2-5.9.2    installed         4.3 M
 openoffice.org-langpack-fr  i386       1:2.0.2-5.9.2    installed          36 M
 openoffice.org-langpack-nl  i386       1:2.0.2-5.9.2    installed          31 M
 openoffice.org-math     i386       1:2.0.2-5.9.2    installed         3.1 M
 openoffice.org-writer   i386       1:2.0.2-5.9.2    installed         5.8 M
 openoffice.org-xsltfilter  i386       1:2.0.2-5.9.2    installed         210 k
 redhat-lsb              i386       3.0-9.2          installed          21 k
 rhythmbox               i386       0.9.4.1-1.fc5.1  installed         5.4 M
 sound-juicer            i386       2.14.3-1.fc5.1   installed         1.8 M
 system-config-printer   i386       0.6.151.7-1      installed         2.7 M
 system-config-printer-gui  i386       0.6.151.7-1      installed         712 k
 totem                   i386       1.4.0-2          installed         4.3 M
 xsane-gimp              i386       0.99-2.2.fc5.4   installed         621 k

Transaction Summary
=============================================================================
Install      0 Package(s)
Update       0 Package(s)
Remove      38 Package(s)

So... you think that's the only way ?

unicornop · 05-27-2006, 02:20 PM

I finally took a deep breath and uninstalled all 38 packages.
And reinstalled CUPS.

Only to find... it's still giving the *same* error !!!!!!!!!!!!!!!!!!!!

Anyone who can help, or point to where I should find help???