[sane-devel] Scanning speed slower, or is it just me?

2002-03-30 Thread Gunther Mayer
Jeremy L Rosenberger wrote: > > I finally had a chance to test this, and sure enough, using the usb-uhci > driver rather than the "alternate"/"JE" uhci driver sped things up > considerably. The scanner head now moves at what is, as far as I can > tell, full speed. Both uhci* are slow compared to

[sane-devel] CanoScan N650U "scanner.c" vs. "libusb"

2002-03-22 Thread Gunther Mayer
Steve Blackwell wrote: > > Hi all, > > I'm new to the list so please bear with me. > > I have a CanoScan N650U scanner that I'd like to use with my RH7.1 > system. It appears that it is not currently supported. Is anybody else > thinking about writing a back end for this device? > > I'm not re

[sane-devel] Re: [linux-usb-devel] Bad Performance uhci (vs. usb-ohci ,ohci) ->2.4.18pre9 too

2002-02-12 Thread Gunther Mayer
Johannes Erdfelt wrote: > > On Tue, Feb 12, 2002, Gunther Mayer wrote: > > Greg KH wrote: > > > > > > On Sun, Feb 10, 2002 at 11:10:07AM +0100, Gunther Mayer wrote: > > > > Hi, > > > > the "uhci" module suffers from very ba

[sane-devel] Re: [linux-usb-devel] Bad Performance uhci (vs. usb-ohci ,ohci) ->2.4.18pre9 breaks libusb-0.1.4

2002-02-12 Thread Gunther Mayer
Greg KH wrote: > > On Sun, Feb 10, 2002 at 11:10:07AM +0100, Gunther Mayer wrote: > > Hi, > > the "uhci" module suffers from very bad performance (linux-2.4.17). > > > > Scanning 150dpi A4 (merlin670 for Canon N670U over libusb-0.1.4) gives: > &

[sane-devel] Bad Performance uhci (vs. usb-ohci ,ohci)

2002-02-10 Thread Gunther Mayer
Hi, the "uhci" module suffers from very bad performance (linux-2.4.17). Scanning 150dpi A4 (merlin670 for Canon N670U over libusb-0.1.4) gives: uhci:135 sec. usb-uhci: 43 sec. ohci: 35 sec This corresponds to about 50K/sec for 'uhci' (and the scanner must stop'n'start) ! Is this a

[sane-devel] Canon N670U:merlin670-V0.02 developers release

2002-02-01 Thread Gunther Mayer
kilg...@khayyam.math.auburn.edu wrote: > > This works. I got a scan out of it. > > Further remarks: > > 1. apparently I had to rmmod scanner first, or it was unhappy. That was expected. I added a verbose message about this. > 2. I had to run the program as root > 3. It didn't want somehow to c

[sane-devel] Canon N670U:merlin670-V0.01 developers release

2002-01-31 Thread Gunther Mayer
Hi, my hack "merlin670" already scans at 150 dpi color: http://home.t-online.de/home/gunther.mayer/merlin-V0.01.c This is an early release for developers, no fancy features! You must even twiddle to get it compiled. See comments in the source. This is - based on libusb (no kernel module scanner.o

[sane-devel] Support for Canon N670U (LM9833+CIS) ??

2001-12-09 Thread Gunther Mayer
Hi, this scanner with USBVID=04a9,PID220D has a LM9833 which is supposedly supported by the plustek_usb backend, but Henning wrote in private email the CIS sensor would be a potential problem. Though in mustek_usb CIS sensors are supported. What should I try? I already have usbsnoopy traces, wo