Stops scanning after a few pages, requires restart

[Marius Gedminas]

1. Try to scan an 18-page document: launch simple-scan
2. Press the scan button, get a page
3. Repeat for pages 2 to 7
4. Press the scan button again, get an error
5. Futilely retry a few times, try to unplug and re-plug the USB cable, nothing helps
6. Launch xsane, try to acquire image preview -- it works
7. Close xsane, Alt-Tab back to simple-scan, try again a few times -- same error
8. Save the incomplete document, close simple-scan, launch simple-scan agani
9. Try to scan again, it works now
10. Repeat for pages 9 to 18
11. Save the second incomplete half, search the Internet for solutions for stitching two PDF files together

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: simple-scan 3.14.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Feb 6 13:09:30 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-07-25 (925 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
Lsusb:
 Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 4291WJF
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic root=UUID=36079681-53fc-4ca2-80ac-98321c07e8d2 ro quiet splash vt.handoff=7
SourcePackage: simple-scan
UpgradeStatus: Upgraded to utopic on 2015-02-05 (1 days ago)
dmi.bios.date: 07/18/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET69WW (1.39 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4291WJF
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8DET69WW(1.39):bd07/18/2013:svnLENOVO:pn4291WJF:pvrThinkPadX220:rvnLENOVO:rn4291WJF:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4291WJF
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO

[Marius Gedminas (mgedmin)]

Unfortunately simple-scan doesn't do log rotation, so I don't have a copy of ~/.cache/simple-scan/simple-scan.log with the failures.

[Marius Gedminas (mgedmin)]

I have vague memories of filing this bug in the past, reproducing the issue, attaching a log file, and seeing libsane getting all the blame (since it's libsane returning error codes from sane_read).

[Marius Gedminas (mgedmin)]

Ah, the bug I filed last time was #1261440 and it was a different situation (scanning failed in the middle of a page).

It's the same office scanner, though (HP Color LaserJet 2840).

The fact that simple-scan failed to scan the page several times in a row and then succeeded after I restarted simple-scan (without touching the USB cable or any scanner buttons) makes me suspect a software bug rather than a hardware quirk. If not in simple-scan itself, then maybe some global state in libsane didn't get reset properly.

(I'm sure there are multiple bugs that interfere with my scanning. I had situations in the past where restarting simple-scan didn't help either.)

[penalvch (penalvch)]

Marius Gedminas, thank you for reporting this and helping make Ubuntu better.

As per https://wiki.ubuntu.com/Releases your release is EOL.

If you have an issue in a supported release (ex. 16.04) please file a new report, and feel free to subscribe me to it.