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SubjectUSB problems and 2.4.0 hangs

Hi all.

I'd installed the backport of the USB patch (to 2.2.16) and had the
following problem:

After a few inches of printing a graphics page (ghostscript output), the
whole printing job would just hang. Only exit was switching the printer
on/off and removing the print job. The printer is an HP810C and (I suspect)
the problem is at the VIA chipset (VT82C586).

After a few frustrating tries, I moved to kernel 2.4.0-test7, suspecting
that maybe there was a problem with the backport. Results:

Exactly the same print problem: hangs after 5 - 10 cm of printing a
graphics page (text mode works ok).
But, after installing 2.4.0, yesterday, I had two misterious hangs of the
operating system - apparently nothing to do with the tasks that were
running - they were completely different.

Just in case: the printer is driven by the apsfilter, which works fine
when using the parallel port.

Thanks on beforehand!

John

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