On Friday 07 November 2008 17:02:47 Hans Petter Selasky wrote: > On Friday 07 November 2008, Stefan Ehmann wrote: > > I recompiled sane-backends and linked it against libusb20. The include > > path needed to be fixed. > > > > scanimage -L doesn't detect any scanners. > > > > sane-find-scanner correctly detects it on first run: > > found USB scanner (vendor=0x04a9 [Canon], product=0x221c [CanoScan], > > chip=GL842) at libusb:/dev/usb:/dev/ugen3.2 > > > > on subsequent runs no scanners are found > > > > dmesg only says > > ugen3.2: <Canon> at usbus3 > > > > no ugen detached message even if I unplug the scanner > > > > I tried some of the debugging sysctls but I couldn't spot anything > > useful. > > > > ugen seems to work in general as I could access my camera with > > libgphoto2. > > > > Will provide more info as needed. > > Hi Stefan, > > Which version/date is the libusb20 you are using? The one commited to current. > Does usbconfig list your device? After I plug it in: ugen3.2: <CanoScan Canon> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON After I run scanimage or sane-find-scanner it silently disappears and usbconfig no longer lists it. > Try changing ownership of the USB devices? Maybe it is a permissions > problem. > > usbconfig -u xx -a xx set_owner xx:yy I tried to run as root, so this shouldn't be the problem.Received on Fri Nov 07 2008 - 15:43:45 UTC
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