On 6/15/18 9:00 PM, Jim Lee wrote: > > > On 06/15/2018 05:00 PM, Chris Angelico wrote: >> On Sat, Jun 16, 2018 at 4:52 AM, Rob Gaddi >> <rgaddi@highlandtechnology.invalid> wrote: >>> On 06/15/2018 11:44 AM, Larry Martell wrote: >>>> My favorite acronym of all time is TWAIN >>>> >>> Really? I always thought it didn't scan. >>> >> Having spent way WAY too many hours trying to turn documents into >> images (and text), I very much appreciate that laugh. >> >> ChrisA > I once had a Mustek color scanner that came with a TWAIN driver. If > the room temperature was above 80 degrees F, it would scan in color - > otherwise, only black & white. I was *sure* it was a hardware > problem, but then someone released a native Linux driver for the > scanner. When I moved the scanner to my Linux box, it worked fine > regardless of temperature. > > -Jim
There actually may still have been a hardware issue, likely something marginal in the timing on the cable. (Timing changing with temperature). It would take a detailed look, and a fine reading of specs, to see if the Windows Driver was to spec, and the hardware is marginal (but the Linux driver didn't push the unit to full speed and got around the issue), of if the Windows driver broke some specification but still sort of worked, especially if things were warm, while the Linux driver did it right. -- Richard Damon -- https://mail.python.org/mailman/listinfo/python-list
