Hi Allan, Thanks for your response -- directing me to the sane source was a big help. I was worried I'd have to get into the USB driver.
I poked around in the source for a bit and discovered an environment variable SANE_HP_RDREDO. I set this to 200 and that allowed sane to wait much longer -- I can get scans now with the XPA. When I used to use scanner with XPA with SCSI, it might take 1 minute for the lamp to warm up before the first scan and a much shorter time after that. Now I'm waiting nearly 5 minutes... but that's not a problem with sane, I'm sure. Maybe my 9-year old machine is showing signs of age. OT: When I bought this scanner, I thought that it would be a nice mid-range model. When scanning slides, it's obvious it has a limited color/contrast range; I see banding and digital noise as well. For negatives, it's worthless. Regards, Erik m. allan noah wrote: > The HP 6x00 scanjets use ancient usb 1.0 (not even 1.1) IIRC. I had > lots of problems with this scanner on USB on every machine I tried. > Eventually I gave up and scrapped it. If you want to try and fix it, I > would get the source of sane-backends 1.0.20, and see if you can add > any calls to sanei_usb_set_timeout to the hp backend. > > allan > > On Wed, Apr 14, 2010 at 9:59 AM, Erik Lotspeich <erik at lotspeich.org> wrote: >> Hi, >> >> I have an HP ScanJet 6300c that I've been using successfully with sane >> for some time now. >> >> I have a problem when I use the XPA. With the XPA, the scanner takes a >> LONG time (it waits for the XPA lamp to warm up) to handle scan >> requests. The problem is that sane timeouts with an I/O error before >> the scanner is ready. When the scanner is ready (you can hear it >> attempt to start the scan), sane is no longer listening. >> >> This scanner has both SCSI & USB interfaces. I've used this scanner >> with XPA & sane many years ago with the SCSI interface -- it worked with >> SCSI. I'm using the USB interface now. >> >> I did some searching on the Internet and I didn't see any definite >> answer. I don't know if this is a sane issue or a USB one. dmesg and >> /var/log/messages yield no error messages or warnings. >> >> I use OpenSUSE 11.1 with the following packages: >> >> # rpm -qa |grep sane >> sane-frontends-1.0.14-302.35 >> xsane-0.995-131.35 >> sane-backends-autoconfig-1.0.19-99.1 >> sane-backends-1.0.19-99.1 >> >> Any help would be greatly appreciated. >> >> Regards, >> >> Erik >> >> -- >> sane-devel mailing list: sane-devel at lists.alioth.debian.org >> http://lists.alioth.debian.org/mailman/listinfo/sane-devel >> Unsubscribe: Send mail with subject "unsubscribe your_password" >> to sane-devel-request at lists.alioth.debian.org >> > > >
