Red Hat Bugzilla – Bug 444923
Firefox print dialog hangs when ipp printer not available
Last modified: 2009-07-14 13:10:58 EDT
Description of problem:
I used to have my printer connected via ipp, but I took down the print server
for maintenance, and connected the USB printer directly to my laptop. So now,
two printers are configured in cups: 1 local and 1 remote (ipp). The remote
printer is not available. Now, printing in firefox hangs indefinitely (until I
removed remote printer in system-config-printer manually). I don't know if other
apps' print dialogs are affected also.
Version-Release number of selected component (if applicable):
Every time I tried.
Steps to Reproduce:
1. Configure remote printer via cups (system-config-printer)
2. Configure local printer via cups
3. Disconnect print server for remote printer
4. Start firefox
5. Attempt to print a page.
Print dialog hangs indefinitely.
Print dialog should show available printers and remote printers that are not
available should be marked as such (or not shown).
Printer is HP photosmart 7350, USB
Remote printer is "shared" via system-config-printer settings (ipp)
Severity marked as "medium" because printer unavailability should not block
access to other printers that are available.
The print dialog is from GTK+.
Changing version to '9' as part of upcoming Fedora 9 GA.
More information and reason for this action is here:
The problem is the same for intsance for OpenOffice.org. It's a critical problem. I've got a small box serving as print server. When it is not turned on before the printing dialog is openened, it will hang. Strace shows that it hangs in the socket connect to the CUPS port on the server. Setting up an iptables rule to remporarily reject access to the IP in the OUTPUT change makes the printing dialog come back after a short while.
It seems that the problem can be eliminated by using a concurrent thread that tries to access the printer (for instance showing "trying to connect to printer" in the status column) allowing for a timeout on connect() (cancel thread with a timer after n seconds, where n is reasonable for a GUI. Although it may be ok if a connection is established after a few minutes from a networking perspective, only a few seconds is acceptable for an interactive dialog).
Is there any upstream work happening for this and are there plans for an upgrade, possibly with a quick fix?
Any progress on this issue?
This message is a reminder that Fedora 9 is nearing its end of life.
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