I have a Canon FB630U USB scanner I and I am having trouble getting 
consistant operation with it on a UHCI system vs an OHCI system both 
running Ubuntu 7.10 2.6 kernel..

The system that uses the Via chipset exhibits a strange problem. When 
you plug in the scanner, or boot witht he scanner already plugged in, 
and you try your first scan, either with scanimage or xsane it just 
hangs for an indeterminate amount of time. Sometimes it will start the 
scan after a minute or two and sometmes it will never start the scan. 
Sometimes you can here the scanner "recalibrate", but thne nothing more 
happens.  Here is what scanimage -L reveals

$ scanimage -L
device `canon630u:/dev/usb/scanner0' is a CANON Canoscan FB630U flatbed 
scanner

Now I try the same scanner on a Compag system, OHCI, and it works first 
time every time. No hesitation. Works perfectly.

I also have a Slackware 12 installation on the Via UCHI system and it 
exibits the exact same problem as the Ubuntu installation.

So, why is it working on one system and not the other?

999alfred


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