I've rebooted and I'm using now the old 3.8.0-27 kernel. Everything works again, as expected. I've created some report files, I'm attaching them so anyone can compare their content with the content of the files that I've already reported (that were made when the 3.8.0-29 kernel was used and so the errors appeared).
** Attachment added: "cat_⁄var⁄log⁄syslog___after_inserting_a_usb_memory___kernel_3.8.0-27_in_PC_Ganton.text" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1214598/+attachment/3779977/+files/cat_%E2%81%84var%E2%81%84log%E2%81%84syslog___after_inserting_a_usb_memory___kernel_3.8.0-27_in_PC_Ganton.text -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1214598 Title: kernel 3.8.0-29 does not detect usb memories; but 3.8.0-27 detects them Status in “linux” package in Ubuntu: Confirmed Bug description: I updated the kernel from 3.8.0-27 to 3.8.0-29, I rebooted, the 3.8.0-29 kernel was used, and... two usb memories were no longer detected. I rebooted and chose the 3.8.0-27 kernel, then both usb memories were detected. I rebooted and chose the 3.8.0-29 kernel again, then both usb memories were *not* detected. I rebooted and chose the 3.8.0-27 kernel, then both usb memories were detected. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: linux-image-3.8.0-29-generic 3.8.0-29.42 ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5 Uname: Linux 3.8.0-29-generic x86_64 ApportVersion: 2.9.2-0ubuntu8.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: to 2018 F.... pulseaudio Date: Tue Aug 20 22:35:40 2013 HibernationDevice: RESUME=UUID=4c2c479a-1691-41c5-9c3a-9b6a58b15d0c InstallationDate: Installed on 2013-05-05 (107 days ago) InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Quanta TW8/SW8/DW8 MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-29-generic root=UUID=b1b85f9b-e29c-4726-be45-6f3df935dedf ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.8.0-29-generic N/A linux-backports-modules-3.8.0-29-generic N/A linux-firmware 1.106 RfKill: 1: phy1: Wireless LAN Soft blocked: no Hard blocked: yes SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/10/2008 dmi.bios.vendor: INSYDE dmi.bios.version: I3C42 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: TW8/SW8/DW8 dmi.board.vendor: Quanta dmi.board.version: UnIn dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 1 dmi.chassis.vendor: Quanta dmi.chassis.version: UK dmi.modalias: dmi:bvnINSYDE:bvrI3C42:bd11/10/2008:svnQuanta:pnTW8/SW8/DW8:pvr03:rvnQuanta:rnTW8/SW8/DW8:rvrUnIn:cvnQuanta:ct1:cvrUK: dmi.product.name: TW8/SW8/DW8 dmi.product.version: 03 dmi.sys.vendor: Quanta To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1214598/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp