The workaround with a power management (keeping scanner turned on) is supposed
to be handled by a udev rule. If you check
/etc/udev/rules.d/
there should be a rule with something like:
ENV{libsane_matched}=="yes", RUN+="/bin/sh -c 'if test -e
/sys/$env{DEVPATH}/power/control; then echo on >
/sys/$env{DEVPATH}/power/control; elif test -e /sys/$env{DEVPATH}/power/level;
then echo on > /sys/$env{DEVPATH}/power/level; fi'"
I have a very similar problem with AGFA 1212u when using the latest openSUSE
releases:
https://bugzilla.opensuse.org/show_bug.cgi?id=1124909
In openSUSE case there is *something* that switches scanner's power
control from "on" back to the "auto" value.
** Bug watch added: bugzilla.opensuse.org/ #1124909
https://bugzilla.opensuse.org/show_bug.cgi?id=1124909
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https://bugs.launchpad.net/bugs/1532582
Title:
Regression: SnapScan 1212U stuck after scanning one page
Status in sane-backends package in Ubuntu:
Expired
Bug description:
If I scan a page using the Agfa SnapScan 1212u, the scanner bar does
not return to the edge but stops in the middle of the scanner at which
point the scanner powers off.
If one now tries to do another scan, the motor give a squeeking sound
for some seconds without movement, and the software reports a
connection failure.
If the scanner USB connection is un- and replugged, the slit returns
to it's home position and it works again.. for one scan.
Some time ago, the scanner worked fine. I don't know how long this is
ago.
WORKAROUND: Manually disable scanner USB autosuspend by executing as root:
echo -1 >/sys/bus/usb/devices/USB_ADDRESS_OF_SCANNER/power/autosuspend
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libsane 1.0.23-3ubuntu3.1
ProcVersionSignature: Ubuntu 3.19.0-42.48~14.04.1-generic 3.19.8-ckt10
Uname: Linux 3.19.0-42-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jan 10 19:21:08 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-11-22 (49 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
SourcePackage: sane-backends
UpgradeStatus: No upgrade log present (probably fresh install)
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