Hi Stefan, hi Julien, On Sunday 25 July 2010 16:19:46 Julien BLACHE wrote: > Stefan Champailler <schampail...@skynet.be> wrote: > > Hi Stefan, Gerhard, > > [Canon N656U] > > I used the scanner again with success... However, not the kind of success > > one > > may have hoped for. Lemme explain... First, as a last chance effort, I've > > switch to debian testing. The scanner just behaves like before : starts > > working and then big grinding noise. So I've decided to try the old ways : > > once the grinding noise started, I hit the scanner hard on its face, close > > to > > the scanning mechanism. And bingo, it works... I've repeated the procedure > > three times and it worked each time. I have no idea why it works like that. > > maybe the scanner is somehow locked when the driver initializes it and when > > I > > hit it I just unlock it... Who knows... > > > > Now, just to remind you : I've successfully used the driver under windows > > => > > it works and it is not broken. > > Maybe Gerhard knows something about this. In the end, it may just > vibrations due to different motor settings between SANE and the Windows > driver.
your guess is right. While playing with different settings, the grinding noise was my partner - and as you now observe sometimes this ghost comes back :( To solve this problem you might try to play with the settings in plustek-usbdevs.c line 2044/2045. Try to reduce the dMaxMotorSpeed and dMaxMoveSpeed until the noise dissapears. It's been a long time since I tweaked these settings, so I can't tell you wich one to tweak. But always change only one setting at a time. HTH Gerhard > > JB. > -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
