Date: Fri, 7 Nov 2008 18:16:11 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-current@freebsd.org Cc: Stefan Ehmann <shoesoft@gmx.net> Subject: Re: usb2: scanner no longer working Message-ID: <200811071816.11704.hselasky@c2i.net> In-Reply-To: <200811071743.40319.shoesoft@gmx.net> References: <200811071134.42761.shoesoft@gmx.net> <200811071702.48123.hselasky@c2i.net> <200811071743.40319.shoesoft@gmx.net>
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On Friday 07 November 2008, Stefan Ehmann wrote: > 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 > Hi, If usbconfig does not list your device, then it is no longer present in the system. Are you running USB2 on a 64-bit architecture? Try again having HUB debugging turned on. sysctl hw.usb2.uhub.debug=15 I suspect that your device: a) had firmware loaded and the scanner driver called the device reset function, which is a little different than on linux. b) USB firmware crashed. Maybe your device needs a quirk? --HPS
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