Ubuntu
cups package

Printer Performance Problem on Ubuntu 11.10

Asked by Phil Ineichen

The printing takes 4 to 5 times longer since I have upgraded from 11.04 to 11.10 (cups 1.5.0-8ubuntu6)!

Printing a test page took 1 - 2 seconds on Ubuntu 11.04. The printer starts printing right away and the print job is done in 1 - 2 seconds.
Now on Ubuntu 11.10 it takes about 4 seconds before the printer even starts to print. Furthermore there is another 2 - 4 seconds delay after the printing is done and a form feed is being sent!

Is there a way to disable these timeouts/delays? Can this problem be caused by a cups driver bug?

Thank you

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Phil Ineichen
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Phil Ineichen (pineichen) said : 		#1

The problem might be caused by the cups driver!

byte buf[16];
ssize_t bytesRead = cupsBackChannelRead((char*)buf, sizeof(buf), 2.5);
if (bytesRead == -1)
    fprintf(stderr, "DEBUG: cupsBackChannelRead is unable to read data, errno=%d\n", errno);

cupsBackChannelRead() returns -1 and errno is 11. What does this mean?

Thank you

Revision history for this message
Phil Ineichen (pineichen) said : 		#2

It isn't a performance problem!

I have opened a new question (Question# 191227).

This one can be closed.