Hi, On Tuesday 12 February 2013 15:01:50 Paul Menzel wrote: [...] > I do not see any interesting either in the Simple Scan log file.
I guess this is because nothing interesting would be inside... [...] > It is very strange that the bug shows up after two scans. This looks strange indeed... > Oh, last thing that comes to my mind. Does the problem depend also on > the resolution? If you take a higher resolution, does the problem start > to occur earlier or later? > > These are just guesses. So please do not have too high hopes. [...] ... but having a quick look at the code, I'd say this one has never been written having 64-bit machines in mind. This is exactly why we have such strange effects. If we are currently in the management mode, I'd say this applies to all of the following bug reports: 314021 sane-find-scanner sees scanner but does not recognize it on 64 bit, works fine on 32 bit 304296 plustek: Color problem on amd64 312505 Epson Perfection 1250 works but, after 1-3 scans, it shows 2 vertical bands of different tones. 314019 my scanner has a problem in the 64-bit systems but works fine with the same systems in 32 bit Maybe same class: 313712 Different colors on the right and the left half of the scan The Plustek Backend (maybe U12 and plustek_pp) needs to be revised to get rid of the assumption u_long/long data types are only 32 bits wide. Cheers, Gerhard
