[Bug 1771525] Re: Scanner not detected if plugged once Kubuntu 18.04 is running

[Victor Marin]

Also, I just confirmed that although Xsane and other scan programs like
Simple Scan and Skanlite detect the scanner (only if it is already
plugged in when Kubuntu 18.04 starts), however only Xsane works Ok
(except that in this 18.04 version of Kubuntu Xsane program only starts
receiving data once the exploration of the document has finished, which
makes much slower scanning several documents, as I describe in the Bug
#1771520.

Simple Scan and Skanlite detects the EPSON Perfection V39 scanner (if
already plugged before starting Kubuntu 18.04 as above said) but don't
start scanning.

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https://bugs.launchpad.net/bugs/1771525

Title:
  Scanner not detected if plugged once Kubuntu 18.04 is running

Status in usbutils package in Ubuntu:
  New

Bug description:
  In Kubuntu 16.04 the scanners were detected by Xsane or other scan
  programs as soon as it were plugged in. Also, if you unplugged it then
  plugged in again also Xsane detected it immediately.

  But in Kubuntu 18.04 the scanner is not detected by Xsane if you plug
  in once Kubuntu 18.04 already running. Only it's detected if you
  starts session with the scanner already plugged in. And if you unplugg
  it then plug it again it is not detected anymore and you must restart
  the computer with the cable plugged into the USB, to be detected.

  It happens the same thing with other scan programs like Skanlite or
  Simple Scan.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: usbutils 1:007-4build1
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Wed May 16 10:25:29 2018
  InstallationDate: Installed on 2018-05-07 (8 days ago)
  InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  SourcePackage: usbutils
  UpgradeStatus: No upgrade log present (probably fresh install)

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