Created attachment 1624817 [details] SANE_DEBUG output Description of problem: Since upgrade to 'sane-backends-1.0.28-1.fc30.x86_64', scanning from an Ethernet-connected device (Samsung C460-series using 'xerox_mfp' driver) fails with error message 'Not a JPEG file: starts with 0x00 0x00'. Have tested with several front-ends (scanimage, simple-scan, gscan2pdf), and with firewalld disabled. The device appears to be correctly detected via Ethernet, and scanning with a USB connection functions correctly. This issue did not occur with 'sane-backends-1.0.27-24.fc30.x86_64'. Version-Release number of selected component (if applicable): sane-backends-1.0.28-1.fc30.x86_64 Output of the following is attached: 'SANE_DEBUG_XEROX_MFP=255 SANE_DEBUG_DLL=255 scanimage -d 'xerox_mfp:tcp 192.168.1.210' -x 600 -y 600 --format=png >./Documents/sane_debug_image.png 2>sane_debug.out'
Hi, thank you for reporting the issue! There was downstream patch reverting commit adding JPEG feature for samsung devices, because it broke several older scanners. Upstream now went the way disabling the feature only on specific scanners which are known to do not work with it. I created the patch based on it, would you mind trying the following build https://koji.fedoraproject.org/koji/taskinfo?taskID=38290503 ?
D'oh, the build failed, wait a minute...
x86_64 build is ok, so it is possible for you to test.
Zdenek, The patched x86_64 build solves my issue - network scan on Samsung C460 is successful. Not sure if I should mark CLOSED or leave that to you. Many thanks!
The patch will need to be added into stable release, so it needs to be opened till that.
Created attachment 1625940 [details] Patch
Reported upstream https://gitlab.com/sane-project/backends/merge_requests/218
FEDORA-2019-4c80d8cf5f has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-4c80d8cf5f
sane-backends-1.0.28-3.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-4c80d8cf5f
FEDORA-2019-4e0ac1c8bb has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-4e0ac1c8bb
sane-backends-1.0.28-4.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-4e0ac1c8bb
sane-backends-1.0.28-4.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.