simple-scan scrambles scanned images

[Wolf Rogner]

My configuration: HP MFP477 (printer and scanner).
Installed printer using HP device manager (which works fine).

Scanning from simple-scan works fine as long as I scan single pages (from the flatbed scanner)

If I want to scan from the feeder (and set the scanner to duplex (which it should be able to do), the pages are scanned only patially and parts of the scanned image copied onto one page (typically 1/3rd of page 1 and 2/3rds of page 2 are put underneath each other, then the remaining image of page 2 is sent to second page).

Installing the dev libs which hp-doctor suggests does not improve on the result (thus I have removed them again).

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: simple-scan 3.20.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia wl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Apr 23 00:25:44 2016
InstallationDate: Installed on 2013-05-17 (1071 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64+mac (20130424)
MachineType: Apple Inc. MacBookPro10,1
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=3679e976-6405-4981-aa99-8c79d15e6aa3 ro quiet splash
SourcePackage: simple-scan
UpgradeStatus: Upgraded to xenial on 2016-04-22 (0 days ago)
dmi.bios.date: 12/21/2012
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP101.88Z.00EE.B03.1212211437
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-C3EC7CD22292981F
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro10,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-C3EC7CD22292981F
dmi.modalias: dmi:bvnAppleInc.:bvrMBP101.88Z.00EE.B03.1212211437:bd12/21/2012:svnAppleInc.:pnMacBookPro10,1:pvr1.0:rvnAppleInc.:rnMac-C3EC7CD22292981F:rvrMacBookPro10,1:cvnAppleInc.:ct10:cvrMac-C3EC7CD22292981F:
dmi.product.name: MacBookPro10,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[alexus (alexus-m)]

Hi All!

I've a similar issue with M477fdw under Fedora distro and just reported it with an example of scan and some additional details there: #1625379.

[alexus (alexus-m)]

It looks like fixed already. At least in Fedora 34, simple-scan-40.
I don't know what was a reason for the issue and missed point what and when it was fixed.