Red Hat Bugzilla – Bug 120020
Cups unstable when print using USB Printer
Last modified: 2007-11-30 17:10:39 EST
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Description of problem:
I use default cups from Fedora Core 1, and I try to print a test page
using 2 printer, 1 HP Deskjet 845c and HP LaserJet 1000. I try HPLJ
1000, and they always said media tray empty, that is silly, the paper
is in the tray.
I try HP 845c, same, cannot print, but when i change to 895c, the test
work, but when I try to print. using gedit, the paper is not working,
cannot print to it.
Several people in the chat room said, must install from source.
I think this is not a good statement.
I can guarrantee the USB is work well, but I think there is a bugs
also in USB driver, if the cups is stable.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. run redhat-config-printer
2. select printer
3. click test cups page
Actual Results: cannot print, and the error is media tray empty
Expected Results: test page show up
'media tray empty' is a kernel bug.
This has to be resolved down to results of "cat > /dev/usb/lp0"
and its results, or an strace output before I can figured it out.
Hmm, I retract comment #1 -- while I had always been led to believe
that it was a kernel bug, it turned out to be a misinterpretation of
status bits on the part of the CUPS USB backend.
However, the 'media tray empty' message is harmless and does not cause
any other symptom.