I updated libusb-0.1.so.4 to libusb-dev in ubuntu 18.04 LTS and the error was gone.
BTW: i am astonished how such an error can remain so long in the operating system :-( -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to libusb in Ubuntu. https://bugs.launchpad.net/bugs/1018677 Title: scanner doesn't work on bootup Status in libusb package in Ubuntu: Confirmed Bug description: When the computer boots up (12.04) with the scanner attached lsusb lists the scanner Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 03f0:1705 Hewlett-Packard ScanJet 5590 Bus 002 Device 003: ID 0424:2502 Standard Microsystems Corp. Bus 002 Device 004: ID 0424:2602 Standard Microsystems Corp. USB 2.0 Hub Bus 002 Device 005: ID 0424:2228 Standard Microsystems Corp. 9-in-2 Card Reader Bus 002 Device 006: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) On Bus 002 Device 002 crw-rw-r--+ 1 root root 189, 129 Jun 27 21:51 /dev/bus/usb/002/002 But when I run scanimage -L >scanimage -L No scanners were identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages). doesn't work as root either scanimage -L [sudo] password for manojav: No scanners were identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages). the only way to get the scanner working again is to power it off (unplug) and plug it again. this time its recognized by scanimage -L or xsane running as non-root as well root. looks like something has got a hold of the device and not letting it go! its similar to when a scanning app crashes and leaves things is a bad state. only way to clear that is power off the scanner and plug it back-in this has been happening since 11.10, and now also w/ 12.04 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xsane 0.998-3ubuntu2 ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18 Uname: Linux 3.2.0-25-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 Date: Wed Jun 27 22:00:50 2012 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) SourcePackage: xsane UpgradeStatus: Upgraded to precise on 2012-06-26 (1 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libusb/+bug/1018677/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
