apport information ** Tags added: apport-collected
** Description changed: Just a few days ago I fresh installed Ubuntu 12.04 32-bits in my laptop. I have a bluetooth dongle attached to an USB port and a bluetooth mouse paired with it. Since the installation I've been experiencing multiple crashes, quite randomly, until I found out that turning off my bluetooth mouse solved it. In fact, I had to do it so I could install Ubuntu. As I said, I couldn't find yet a clearly situation in which the crash occurs. It can happen just a few seconds after turning the mouse on, hours later, or when returning from a suspension state. Actually, the only certain situation for a crash I found out is when returning from suspension mode. So, some steps to reproduce this bug are: 1) Turn on bluetooth mouse 2) Turn on computer and log on Ubuntu 3) Wait or, alternatively: 3.0) Suspend your session 3.1) Return from suspension Results can be three: A) Computer is completely frozen, showing the last screen. Mouse cursor is on the screen, you can't move it and any keyboard command has no effects (I can't go to terminal nor restart X). B) Similar to A, but the screen is black, showing just the cursor. C) Screen shows lots of messages, probably from a kernel oops. In all cases, I have to do a hard reboot. I've been experiencing this issue since Ubuntu 11.10 (Ubuntu 11.04 worked flawlessly). However, I don't think it's just an Ubuntu related issue. Trying to install Fedora 16 also resulted in multiple crashes. I tried to reproduce these situations, and I'm attaching the correspondent kern.log here. However, I didn't found any relevant information in the output of Situation 2 and 3. Situation 1) Turned the mouse on, with system already running. Just a few seconds after, screen went black (with cursor in it) and totally frozen. Had to do a hard reboot. Situation 2) Turned the mouse on before booting the system. After login, waited a few moments and entered suspension mode. After some moments returned from suspension. Ubuntu was froozen in lock screen. Situation 3) After the crash in situation 2, turned again the computer on. After login, moved the mouse a bit and screen froze. I tried to reproduce the kernel oops, but wasn't successful. So I am attaching the kern.log of one of the kernel oops I had yesterday. I think it will be useful. Finally, I just like to add it's very common my wallpaper and other preferences are gone after a crash like that, and I have to do change them all over again. WORKAROUND: Disable Bluetooth. + --- + AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. + AplayDevices: + **** List of PLAYBACK Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 + ApportVersion: 2.0.1-0ubuntu8 + Architecture: i386 + ArecordDevices: + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: rafael 2386 F.... pulseaudio + Card0.Amixer.info: + Card hw:0 'Intel'/'HDA Intel at 0xf6700000 irq 46' + Mixer name : 'Realtek ALC262' + Components : 'HDA:10ec0262,144dc042,00100202' + Controls : 20 + Simple ctrls : 11 + DistroRelease: Ubuntu 12.04 + EcryptfsInUse: Yes + HibernationDevice: RESUME=UUID=8ae22233-07e8-4ab6-915a-360e9ab86bac + InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) + MachineType: SAMSUNG ELECTRONICS CO., LTD. R509 + Package: linux (not installed) + ProcEnviron: + TERM=xterm + PATH=(custom, user) + LANG=en_US.UTF-8 + SHELL=/bin/bash + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-25-generic-pae root=UUID=cf95050d-0e07-47a7-a2f2-fa62aa8839d7 ro quiet splash acpi_backlight=vendor vt.handoff=7 + ProcVersionSignature: Ubuntu 3.2.0-25.40-generic-pae 3.2.18 + RelatedPackageVersions: + linux-restricted-modules-3.2.0-25-generic-pae N/A + linux-backports-modules-3.2.0-25-generic-pae N/A + linux-firmware 1.79 + SourcePackage: linux + Tags: precise precise + Uname: Linux 3.2.0-25-generic-pae i686 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo + dmi.bios.date: 04/01/2010 + dmi.bios.vendor: Phoenix Technologies Ltd. + dmi.bios.version: 03LP.M008.20100401.KSJ + dmi.board.name: R509 + dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. + dmi.board.version: Not Applicable + dmi.chassis.asset.tag: No Asset Tag + dmi.chassis.type: 10 + dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. + dmi.chassis.version: N/A + dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr03LP.M008.20100401.KSJ:bd04/01/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR509:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR509:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A: + dmi.product.name: R509 + dmi.product.version: Not Applicable + dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. ** Attachment added: "AcpiTables.txt" https://bugs.launchpad.net/bugs/1003624/+attachment/3188429/+files/AcpiTables.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1003624 Title: kernel BUG at /build/buildd/linux-3.2.0/mm/slub.c:3427!; EIP is at kfree+0x10f/0x120 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1003624/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
