Hi, I can not reproduce the "crashing head" on my side, however I know about the stripes, those color stripes are a regression from calibration changes in the avision backend. I so far had no time to track them down, However with some C knowledge and some trial'n error or SVN change review it should be possible to track it down in some hours. The calibration worked on the 7400 when I implemented 74xx support like 4 years ago or so :-)
Can the reporter try my latest development code from: http://svn.exactcode.de/sane-avision/trunk/backend/ to see if the crashing head issue disappears? On Saturday 22 September 2007 13:35:41 Julien BLACHE wrote: > reassign 443254 libsane 1.0.18-5 > thanks > > Sebastien Desreux <[EMAIL PROTECTED]> wrote: > > Hi Rene, > > Could you have a look at the following bug report for avision in SANE > 1.0.18 ? > > Thanks. > > > > This report is written with regard to the HP ScanJet 7400C scanner (avision > > driver). > > > > When scanning with 'scanimage', it seems that the first scan of the day > > always > > sends the head (the moving part) too far, until it collides with the > > plastic > > frame at the "bottom". I tried uncommenting the line > > option force-a4 > > in /etc/sane.d/avision.conf > > but the result is the same. > > > > Interestingly, after the first failure, shutting down the scanner and > > powering > > it again, subsequent scans are OK. > > > > > > There is also a vertical band of approximately 1cm that is not really > > scanned; > > it's weird: bright colors appear, but white patches look like they didn't > > exist. This problem is independent from the first, it shows on all scans. > > > > > > I happen to have a (fully paid) commercial version of the program "Vuescan" > > made especially for Linux; none of the two problems mentionned above appear > > with this software. I would really prefer to use scanimage of course, not > > least for the scripting capabilities and the better rendering... Scanimage > > worked great with my old ScanJet 6300C. > > JB. -- René Rebe - ExactCODE GmbH - Europe, Germany, Berlin Geschäftsführer: Susanne Klaus, René Rebe Sitz: Berlin, Amtsgericht Charlottenburg HRB 105 123 B USt-IdNr.: DE251602478 http://exactcode.de | http://t2-project.org | http://rene.rebe.name
