Hi, from your Dmesg.txt:
#### [ 1208.039310] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1208.039319] ata1.00: BMDMA stat 0x5 [ 1208.039327] ata1.00: failed command: READ DMA EXT [ 1208.039343] ata1.00: cmd 25/00:08:00:0f:90/00:00:10:00:00/e0 tag 0 dma 4096 in [ 1208.039346] res 51/40:06:02:0f:90/40:00:10:00:00/e0 Emask 0x9 (media error) [ 1208.039353] ata1.00: status: { DRDY ERR } [ 1208.039359] ata1.00: error: { UNC } [ 1208.096637] ata1.00: configured for UDMA/100 [ 1208.096671] ata1: EH complete #### and #### [ 1253.548488] sd 0:0:0:0: [sda] Unhandled sense code [ 1253.548494] sd 0:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1253.548503] sd 0:0:0:0: [sda] Sense Key : Medium Error [current] [descriptor] [ 1253.548513] Descriptor sense data with sense descriptors (in hex): [ 1253.548518] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00 [ 1253.548538] 10 90 0f 02 [ 1253.548548] sd 0:0:0:0: [sda] Add. Sense: Unrecovered read error - auto reallocate failed [ 1253.548559] sd 0:0:0:0: [sda] CDB: Read(10): 28 00 10 90 0f 00 00 00 08 00 [ 1253.548578] end_request: I/O error, dev sda, sector 277876482 #### Please test your harddrive first. Jörg ** Changed in: sane-backends (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to sane-backends in Ubuntu. https://bugs.launchpad.net/bugs/1292853 Title: package libsane 1.0.22-7ubuntu1 failed to install/upgrade: failed to read on buffer copy for md5hash: Input/output error Status in “sane-backends” package in Ubuntu: Invalid Bug description: il y a toujours ce message, à chaque installation de logiciel. C'est apparu après les mises à jour que j'ai effectué avant hier. ProblemType: Package DistroRelease: Ubuntu 12.04 Package: libsane 1.0.22-7ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14 Uname: Linux 3.2.0-23-generic-pae i686 ApportVersion: 2.0.1-0ubuntu5 Architecture: i386 Date: Thu Mar 13 19:25:19 2014 ErrorMessage: failed to read on buffer copy for md5hash: Input/output error InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) SourcePackage: sane-backends Title: package libsane 1.0.22-7ubuntu1 failed to install/upgrade: failed to read on buffer copy for md5hash: Input/output error UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1292853/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp