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Hello, I've encountered a problem similar to the one described in this thread:
http://bbs.archlinux.org/viewtopic.php? … inter+slow
Two major differences:
I am using a locally connected USB printer Konica Minolta PagePro 1300W with the min12xxw driver.
My printer had been working flawlessly for more than a year. All of the problems appeared about one week ago.
I recompiled CUPS, foomatc, min12xxw... - simply everything I could think of. But still no luck. What could have happened? Have there been any important changes to the kernel that could influence USB communication?
I switched CUPS to LogLevel debug. There are thousands of strange lines in the log. They had never been there before. (I use LogLevel debug quite often, because CUPS sucks all the time, in all distros. The newer version, the worse.)
D [05/Oct/2006:22:45:33 +0200] [Job 619] Wrote 8192 bytes of print data...
D [05/Oct/2006:22:45:33 +0200] [Job 619] Received 40 bytes of back-channel data!
D [05/Oct/2006:22:45:33 +0200] [Job 619] Read 8192 bytes of print data...
D [05/Oct/2006:22:45:33 +0200] [Job 619] Wrote 8192 bytes of print data...
D [05/Oct/2006:22:45:33 +0200] [Job 619] Received 40 bytes of back-channel data!If you have any ideas on what this could be caused by or what I should try, please give me a hint. I need to print many pages a day and this is a real nightmare for me.
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Hello, the problem has been solved successfully. CUPS sources had to be modified a little bit. Please see here. http://www.cups.org/str.php?L2019 When your printer gets terribly slow, you should skim through the CUPS logs in the LogLevel debug mode. Your printer might be violating the protocol, just like mine. (And all Epsons...) In such case, adjustments to the new back-channel API of CUPS are necessary.
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