[sane-devel] Canon DR-C225 II - black scan

[Marek]

Dear developers,
I wonder if you could help me with resolving a problem with Canon
DR-C225 II scanner (canon_dr backend). The output scan is all black. In
2015 there was a thread on the predecessor of this scanner: DR-C225
(without 'II'), which suffered from similar problem. Unfortunately that
thread seems to be prematurely abandoned without solving the issue.
I'm attaching a scanimage log for a page scanned in a grayscale mode (for
the color mode the output scan is black as well).
Best regards,
Marek
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