Red Hat Bugzilla – Bug 110652
Incomplete conversion from LPRng to CUPS
Last modified: 2007-11-30 17:10:33 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031030 Description of problem: After an upgrade from RH 7.3 to Fedora Core 1, the LPRng -> CUPS conversion was incomplete. All LPRng components were removed, and all CUPS components were installed. However, the system was still configured to use LPRng, so printing was non-functional. Version-Release number of selected component (if applicable): anaconda-9.2-2 How reproducible: Didn't try Steps to Reproduce: 1. Configure a system with RedHat Linux 7.3. 2. Configure one or more printers using LPRng. 3. Upgrade the system to Fedora Core 1. Actual Results: Printing subsystem non-functional. printconf-gui reports "Cannot write to queues" or "/usr/bin/lpr not found" when applying any changes or trying to print a test page. Expected Results: Printing subsystem should have functioned normally Additional info: The following steps were necessary to re-establish printing functionality: /sbin/chkconfig add cups /etc/initd.d/cups restart /usr/sbin/alternatives --config print, and select option '1' In addition, after verifying that printing worked, I did: /usr/sbin/alternatives --auto print
*** Bug 111724 has been marked as a duplicate of this bug. ***
*** Bug 111787 has been marked as a duplicate of this bug. ***
I didn't find the solution described above, but wound up 'fixing' it this way: # cd /etc/alternatives # ls print* | awk '{print $NF, $(NF-2)}' | sed 's/LPRng/cups/g' | \ xargs -n2 ln -sf (I also started cups. Based on the earlier solution, I'll have to do a bit more to keep it fixed.) This is a _very_ ugly problem. I spent a lot of time trying to find a pointer to explain what was going on. GRRRR
Same problem observed here upgrading RH9 to core 1. I just deleted the bad symlinks for lpq, lpr, lprm and lpstat in /usr/bin and relinked them to the cups version there. Havent tried a reboot to see if cups starts ok, I did /etc/rc.d/init.d/cups restart before I fixed the symlinks. Also I had to re-add my two printers. Used the HTML GUI for that.
Annoying, but I really don't think that upgrading from RH7.3 or RH9 to FC1 (or 4 or 5 or anything) is going to be supported at this point.