VS, the next step is to fully commit bisect from the release prior to Precise that this problem didn't happen with, to Precise in order to identify the offending commit.
Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ? ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/993507 Title: ATA errors when link_power_management_policy is min_power Status in The Linux Kernel: Confirmed Status in “linux” package in Ubuntu: Incomplete Bug description: Disk I/O is dead-slow and dmesg is filled with error messages such as the example below when /sys/class/scsi_host/host*/link_power_management_policy is set to min_power. WORKAROUND: Change it back to max_performance. ~$ cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: HITACHI HTS54161 Rev: SBDI Type: Direct-Access ANSI SCSI revision: 05 Host: scsi3 Channel: 00 Id: 00 Lun: 00 Vendor: HL-DT-ST Model: DVDRAM GSA-U10N Rev: 1.05 Type: CD-ROM ANSI SCSI revision: 05 dmesg errors: [ 607.081784] ata1.00: exception Emask 0x10 SAct 0xfe SErr 0x48c0002 action 0xe frozen [ 607.081796] ata1.00: irq_stat 0x08000040, interface fatal error, connection status changed [ 607.081807] ata1: SError: { RecovComm CommWake 10B8B LinkSeq DevExch } [ 607.081816] ata1.00: failed command: WRITE FPDMA QUEUED [ 607.081833] ata1.00: cmd 61/10:08:df:06:a5/00:00:08:00:00/40 tag 1 ncq 8192 out [ 607.081837] res 50/00:08:ff:06:d1/00:00:00:00:00/40 Emask 0x10 (ATA bus error) [ 607.081845] ata1.00: status: { DRDY } [ 607.081852] ata1.00: failed command: WRITE FPDMA QUEUED [ 607.081867] ata1.00: cmd 61/10:10:2f:07:a5/00:00:08:00:00/40 tag 2 ncq 8192 out [ 607.081871] res 50/00:08:ff:06:d1/00:00:00:00:00/40 Emask 0x10 (ATA bus error) [ 607.081879] ata1.00: status: { DRDY } [ 607.081886] ata1.00: failed command: WRITE FPDMA QUEUED [ 607.081901] ata1.00: cmd 61/08:18:6f:07:a5/00:00:08:00:00/40 tag 3 ncq 4096 out [ 607.081904] res 50/00:08:ff:06:d1/00:00:00:00:00/40 Emask 0x10 (ATA bus error) [ 607.081912] ata1.00: status: { DRDY } [ 607.081919] ata1.00: failed command: WRITE FPDMA QUEUED [ 607.081933] ata1.00: cmd 61/08:20:07:22:a6/00:00:08:00:00/40 tag 4 ncq 4096 out [ 607.081937] res 50/00:08:ff:06:d1/00:00:00:00:00/40 Emask 0x10 (ATA bus error) [ 607.081945] ata1.00: status: { DRDY } [ 607.081952] ata1.00: failed command: WRITE FPDMA QUEUED [ 607.081966] ata1.00: cmd 61/08:28:df:06:a9/00:00:08:00:00/40 tag 5 ncq 4096 out [ 607.081970] res 50/00:08:ff:06:d1/00:00:00:00:00/40 Emask 0x10 (ATA bus error) [ 607.081978] ata1.00: status: { DRDY } [ 607.081984] ata1.00: failed command: WRITE FPDMA QUEUED [ 607.081999] ata1.00: cmd 61/08:30:df:06:d1/00:00:00:00:00/40 tag 6 ncq 4096 out [ 607.082002] res 50/00:08:ff:06:d1/00:00:00:00:00/40 Emask 0x10 (ATA bus error) [ 607.082010] ata1.00: status: { DRDY } [ 607.082017] ata1.00: failed command: WRITE FPDMA QUEUED [ 607.082032] ata1.00: cmd 61/08:38:ff:06:d1/00:00:00:00:00/40 tag 7 ncq 4096 out [ 607.082035] res 50/00:08:ff:06:d1/00:00:00:00:00/40 Emask 0x10 (ATA bus error) [ 607.082043] ata1.00: status: { DRDY } [ 607.082055] ata1: hard resetting link [ 608.084073] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 608.085166] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded [ 608.085171] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out [ 608.085382] ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 (SET FEATURES) succeeded [ 608.085387] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out [ 608.087770] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded [ 608.087777] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out [ 608.087965] ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 (SET FEATURES) succeeded [ 608.087973] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out [ 608.089106] ata1.00: configured for UDMA/100 [ 608.089330] ata1: EH complete ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-24-generic-pae 3.2.0-24.37 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14 Uname: Linux 3.2.0-24-generic-pae i686 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu7 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: vegar 2270 F.... pulseaudio vegar 2382 F.... xfce4-volumed /dev/snd/controlC29: vegar 2382 F.... xfce4-volumed CRDA: Error: [Errno 2] Ingen slik fil eller filkatalog Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xfe220000 irq 49' Mixer name : 'Analog Devices AD1984' Components : 'HDA:11d41984,17aa20d7,00100400' Controls : 32 Simple ctrls : 20 Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7KHT24WW-1.08' Mixer name : 'ThinkPad EC 7KHT24WW-1.08' Components : '' Controls : 1 Simple ctrls : 1 Card29.Amixer.values: Simple mixer control 'Console',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Wed May 2 21:50:07 2012 HibernationDevice: RESUME=UUID=d4c0af33-0f9f-42e8-99ff-ad8b66f28723 IwConfig: Error: [Errno 2] Ingen slik fil eller filkatalog MachineType: LENOVO 766418G ProcEnviron: LANGUAGE=nb_NO:nb:no_NO:no:nn_NO:nn:en_GB:en TERM=xterm PATH=(custom, user) LANG=nb_NO.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-24-generic-pae root=UUID=0048d440-8ee4-4871-bc67-0ae31d4e3f70 ro quiet splash pcie_aspm=force vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-24-generic-pae N/A linux-backports-modules-3.2.0-24-generic-pae N/A linux-firmware 1.79 RfKill: Error: [Errno 2] Ingen slik fil eller filkatalog SourcePackage: linux UdevDb: Error: [Errno 2] Ingen slik fil eller filkatalog UpgradeStatus: Upgraded to precise on 2012-05-02 (0 days ago) WpaSupplicantLog: dmi.bios.date: 04/08/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 7LETC7WW (2.27 ) dmi.board.name: 766418G dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr7LETC7WW(2.27):bd04/08/2010:svnLENOVO:pn766418G:pvrThinkPadT61:rvnLENOVO:rn766418G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 766418G dmi.product.version: ThinkPad T61 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/993507/+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
