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[#315554] CanoScan LiDE 210 still has scaling issues at 600 dpi with sane 1.0.25git

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Date:
2016-11-17 04:17
Priority:
3
State:
Open
Submitted by:
pierre pierre (ful-guest)
Assigned to:
Nobody (None)
Category:
backends (drivers)
Group:
None
Resolution:
None
Summary:
CanoScan LiDE 210 still has scaling issues at 600 dpi with sane 1.0.25git

Detailed description
[#315050] claims this issue is fixed, but I just tried with a LiDE 210 and sane 1.0.25.

I used `scanimage --resolution=$RES --mode=$MODE | convert -quality 60% - scan_$RES_$MODE.jpg`

with
scanimage (sane-backends) 1.0.25git; backend version 1.0.25

Results are there: https://postimg.org/gallery/2cp5qepz8/

600 dpi lineart and gray are distorted, and the page is truncated. Happy to provide more details as needed.

Followups: Sort comments antichronologically

Message
Date: 2016-11-17 15:37
Sender: pierre pierre

The exact libsane version I'm using is: 1.0.25+git20150528-1ubuntu2
Date: 2016-11-17 15:50
Sender: m. allan noah

1.0.25-git20150528-1ubuntu2 is older than the fix. You need to upgrade to a later sane-backends git snapshot.
Date: 2016-11-17 23:51
Sender: pierre pierre

I'm not sure which one to use, I tried to compile from source (git tag `RELEASE_1_0_25`), but the bug is still present. HEAD at that tag is dated 4-oct-2016. (commit 0a772ca5db6ed8ce466f944b13dea8bd56e7b86)

I also tried to compile master (which is reported as 1.0.26 with scanimage --version), but it doesn't work at all: I can hear the motor stutter, the scanning light is flickering and blinking, and it stays like that for ever. Every mode and resolution seem affected.

Which commit should I checkout and compile to check whether the issue is resolved or not?

Attached Files:

Attachments:
Size Name Date By Download
628 KiBscan_color_300.jpg2016-11-17 04:18ful-guestscan_color_300.jpg
2.25 MiBscan_color_600.jpg2016-11-17 04:18ful-guestscan_color_600.jpg
2.28 MiBscan_gray_600.jpg2016-11-17 04:18ful-guestscan_gray_600.jpg
665 KiBscan_gray_300.jpg2016-11-17 04:18ful-guestscan_gray_300.jpg
2.06 MiBscan_lineart_600.jpg2016-11-17 04:18ful-guestscan_lineart_600.jpg

Changes:

Field Old Value Date By
File Added7283: scan_lineart_600.jpg2016-11-17 04:18ful-guest
File Added7282: scan_gray_600.jpg2016-11-17 04:18ful-guest
File Added7280: scan_color_600.jpg2016-11-17 04:18ful-guest
File Added7281: scan_gray_300.jpg2016-11-17 04:18ful-guest
File Added7279: scan_color_300.jpg2016-11-17 04:18ful-guest
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