Same problem I had last month. What I did?
I comment out the line: device uscanner on my kernel and installed libUSB. My Scanner worked for 2 or 3 times and now it doesn't work anymore. I have FreeBSD 4.10-STABLE Scanner: USB Generic Flatbed Scanner On Fri, 11 Jun 2004 00:38:41 +0200, Christian Hiris <[EMAIL PROTECTED]> wrote: > > On Thursday 10 June 2004 13:15, Rob wrote: > > Olaf Hoyer wrote: > > > > > > I think the warm-up of the device is a bit slow, before it actually will > > > do something. > > > > I find it so terribly slow in comparison to its operation on Windows, > > that I think it's not the HP scanner, but the software, or the way > > I use the software. > > > > Also the quality is miserable. Although that is probably my mistake, > > I use the software with its default settings. It should be strange > > that the defaults result in miserably low quality pictures.... > > > > I have changed the scan from "Lineart" to "Color"; this allows me to > > have a long, long coffee break until the scan is finished! > > > > ------------ > > > > One more thing I do not understand: I always have to give > > "hp:/dev/uscanner0" as the device parameter to the scanner command. > > > > When I do "xscanimage", I get > > [xscanimage] No scanners were identified. If you were expecting something > > different, check that the scanner is plugged in, turned on and > > detected by sane-find-scanner (if appropriate). Please read > > the documentation which came with this software (README, FAQ, > > manpages). > > > > But "xscanimage hp:/dev/uscanner0" works fine. > > > > However, "sane-find-scanner", returns the scanner, vendor, product etc: > > found USB scanner (vendor=0x03f0, product=0x0401) at /dev/uscanner0 > > > > And "scanimage -L" returns: > > No scanners were identified. If you were expecting something different, > > check that the scanner is plugged in, turned on and detected by the > > sane-find-scanner tool (if appropriate). Please read the documentation > > which came with this software (README, FAQ, manpages). > > I did some debugging on that on 5.2-current with sane-backends 1.0.14. > I only have a HP-6270C, but it shows symptoms similar to your HP-5200C. > The USB Controller is a VIA 83C572 chipset. I used xsane when debugging the hp > driver. > > Scenario I. > > 1. Scanner attached to /dev/usb1. > 2. Run xsane, xscanimage and friends under an unprivileged user. > 3. Don't want to pass the [driver:/device] parameter to your scanner app. > > What happens? > > The initialization code steps thru the usb devices until it finds a device > that matches a driver:device in /usr/local/etc/sane.d/. > If a permission for a /dev/usbx device is missing and no matching device could > be found, the initialization code calls sane_exit and the program terminates. > [simply spoken] > > So, if our scanner is attached to /dev/usb1 one need to set "proper" > permissions on /dev/usb0, /dev/usb1 and /dev/uscanner0. > > crw-rw---- 1 root operator 243, 255 Jun 6 14:10 usb > crw-rw-rw- 1 root operator 243, 0 Jun 6 14:10 usb0 > crw-rw-rw- 1 root operator 243, 1 Jun 6 14:10 usb1 > crw-rw---- 1 root operator 243, 2 Jun 6 14:10 usb2 > crw-rw---- 1 root operator 243, 3 Jun 6 14:10 usb3 > crw-rw-rw- 1 root operator 242, 0 Jun 10 19:31 uscanner0 > > Scenario II. > > 1. Scanner is attached to /dev/usb1. > 2. Run xsane, xscanimage and friends under an unprivileged user. > 3. Pass the [driver:/device] opt to your scanner app. (ie. hp:/dev/uscanner) > 4. Modes of /dev/usb* /dev/uscanner0: > > crw-rw---- 1 root operator 243, 255 Jun 6 14:10 usb > crw-rw---- 1 root operator 243, 0 Jun 6 14:10 usb0 > crw-rw-rw- 1 root operator 243, 1 Jun 6 14:10 usb1 > crw-rw---- 1 root operator 243, 2 Jun 6 14:10 usb2 > crw-rw---- 1 root operator 243, 3 Jun 6 14:10 usb3 > crw-rw-rw- 1 root operator 242, 0 Jun 10 19:31 uscanner0 > > What happens here? > > The great difference here is that /dev/usb0 is left at default mode 660. > In general, modes 666 for /dev/usb1 and /dev/uscanner0 are sufficient, but > device handling by the driver is different. It looks like the driver doesn't > keep the device open (which it does in scenario I.): > > [hp] hp_GetOpenDevice: device /dev/uscanner0 not open > [hp] hp_nonscsi_open: device /dev/uscanner0 opened, fd=24 > [hp] hp_AddOpenDevice: /dev/uscanner0 should not be kept open > > Sometimes when the driver issues a scsi_flush to the scanner the scanner/app > hangs for several minutes. Normally such large delay only occurs as a result > of i/o errors, but not during normal operation (as under scenario I.). > > [hp] scsi_flush: writing 2 bytes: > [hp] 0x0000 1B 45 .E > [waits several minutes here] > > Furthermore setting environment SANE_DEFAULT_DEVICE to "hp:/dev/uscanner0" > does not work for xsane and xscanimage. According to the manpages it should > work. > > What can you do? > > A simple way to make your scanner work without the devicename, is to plug the > scanners usb cable into usb port 0 and do a 'chmod 666 /dev/usb0'. This > should make your gimp-plugin happy. > > In my mind scanner initialization runs faster and more stable, if the device > stays open (as in scenario I.). You can make startup initialization a little > faster by removing unneeded drivers from /usr/local/etc/sane.d/dll.conf. The > line 'hp' should suffice. > > Hint: Dust on the optical device also can slow down or break the calibration > process of your scanner. > > > > > Is there a configuration file where I should define the default scanner, > > i.e. "hp:/dev/uscanner0" ? > > See SANE_DEFAULT_DEVICE above. > > > > > > > A side effect of this is (I believe), that sane doesn't work as a plugin > > with Gimp. I think Gimp first tries to probe the scanner devices, it > > doesn't get any, so the plugin doesn't work. Or something like this. > > (Yes, I have compiled sane with "WITH_GIMP=yes"). > > > > Thanks for the help. > > Rob. > > > > -- > Christian Hiris <[EMAIL PROTECTED]> | OpenPGP KeyID 0x941B6B0B > OpenPGP-Key at hkp://wwwkeys.eu.pgp.net and http://pgp.mit.edu > > > _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
