I’m seeing a similar problem. Each time I connect I see this. I’ve run calibration like 10 times now.
Each time when I hit Next I see that my Lens shading is all good.
Exploring further to see why, I use ofm serve so that I can see the debug output in an SSH session. I actually wish this debut output was available in the desktop app. It would be super helpful especially during long tasks like the scan, because it let’s you know stuff is still happening, rather than being frozen, which happens a lot to me, i.e. I just ran out of disk space on my 8GB flash drive while doing a scan.
Anyway, I click this button to calibrate…
Here’s the start of the SSH output
And ultimately it fails with this error.
I finally ran a new image which was some tape with some dust on it. That seemed to work, so it’s the image and possibly the contrast in it that’s critical to get the calibration to work.
Here’s the output that finally looks successful.
Yes!!! I finally can double click the image to have it move on the screen.