Uninstalling the tlp package resolved this issue for me (Ubuntu 14.04). Disabling laptop_mode also seemed to help: echo 0 > /proc/sys/vm/laptop_mode
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pm-utils in Ubuntu. https://bugs.launchpad.net/bugs/539467 Title: SATA link power management causes disk errors and corruption Status in The Linux Kernel: Expired Status in linux package in Ubuntu: Invalid Status in pm-utils package in Ubuntu: Fix Released Status in pm-utils-powersave-policy package in Ubuntu: Invalid Status in linux source package in Lucid: Won't Fix Status in pm-utils source package in Lucid: Invalid Status in pm-utils-powersave-policy source package in Lucid: Fix Released Status in linux source package in Maverick: Invalid Status in pm-utils source package in Maverick: Invalid Status in pm-utils-powersave-policy source package in Maverick: Invalid Status in linux source package in Natty: Invalid Status in pm-utils source package in Natty: Fix Released Status in pm-utils-powersave-policy source package in Natty: Invalid Bug description: SRU Justification for pm-utils-powersave-policy: Impact: On certain hardware, enabling power saving for the SATA link can cause data corruption. How Addressed: The proposed branch removes the sata link power policy script. This will cause the link to be maintained at the normal power usage instead of dropping when the power is removed from the machine. Reproduction: On an affected machine, unplug and plug in the power a few times. Data corruption will result. Regression Potential: Removing the script will cause the SATA link to stay fully powered at all times. This may cause an increase in the battery usage for some machines. There should be no functionality regressions or bugs introduced by this change. ===== Using Lucid on my laptop, I see errors like this in dmesg quite frequently (every few hours): Mar 14 23:00:09 chris-laptop kernel: [42987.460608] ata1.00: exception Emask 0x10 SAct 0x1 SErr 0x50000 action 0xe frozen Mar 14 23:00:09 chris-laptop kernel: [42987.460618] ata1.00: irq_stat 0x00400000, PHY RDY changed Mar 14 23:00:09 chris-laptop kernel: [42987.460627] ata1: SError: { PHYRdyChg CommWake } Mar 14 23:00:09 chris-laptop kernel: [42987.460635] ata1.00: failed command: READ FPDMA QUEUED Mar 14 23:00:09 chris-laptop kernel: [42987.460649] ata1.00: cmd 60/08:00:97:23:44/00:00:01:00:00/40 tag 0 ncq 4096 in Mar 14 23:00:09 chris-laptop kernel: [42987.460652] res 40/00:04:97:23:44/00:00:01:00:00/40 Emask 0x10 (ATA bus error) Mar 14 23:00:09 chris-laptop kernel: [42987.460669] ata1.00: status: { DRDY } Mar 14 23:00:09 chris-laptop kernel: [42987.460681] ata1: hard resetting link Mar 14 23:00:09 chris-laptop kernel: [42987.523336] ata2: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xe frozen Mar 14 23:00:09 chris-laptop kernel: [42987.523346] ata2: irq_stat 0x00400000, PHY RDY changed Mar 14 23:00:09 chris-laptop kernel: [42987.523355] ata2: SError: { PHYRdyChg CommWake } Mar 14 23:00:09 chris-laptop kernel: [42987.523368] ata2: hard resetting link Mar 14 23:00:09 chris-laptop kernel: [42988.202586] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Mar 14 23:00:09 chris-laptop kernel: [42988.205443] ata1.00: configured for UDMA/133 Mar 14 23:00:09 chris-laptop kernel: [42988.205459] ata1: EH complete Mar 14 23:00:09 chris-laptop kernel: [42988.280089] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Mar 14 23:00:09 chris-laptop kernel: [42988.285567] ata2.00: configured for UDMA/100 Mar 14 23:00:09 chris-laptop kernel: [42988.289370] ata2: EH complete Every couple of days, this results in data corruption and my filesystem being remounted read-only: [ 6148.305806] Aborting journal on device sda1-8. [ 6148.325011] EXT4-fs error (device sda1): ext4_journal_start_sb: Detected aborted journal [ 6148.325018] EXT4-fs (sda1): Remounting filesystem read-only [ 6148.326702] journal commit I/O error [ 6148.330975] EXT4-fs error (device sda1) in ext4_reserve_inode_write: Journal has aborted [ 6148.462572] __ratelimit: 15 callbacks suppressed Those messages generally appear at the end of dmesg after the event, just after the "hard resetting link" message. I then have to boot a live CD and manually run fsck, as I can no longer boot the laptop. This is happening every couple of days generally, although it happened 3 times in one day last Thursday. I did contemplate it being a hardware issue, but I tried running the kernel from Karmic for a couple of days, and that worked ok without a single error message ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chr1s 4010 F.... pulseaudio /dev/snd/controlC1: chr1s 4010 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf6afc000 irq 21' Mixer name : 'Intel G45 DEVCTG' Components : 'HDA:111d76b2,10280263,00100302 HDA:80862802,80860101,00100000' Controls : 22 Simple ctrls : 11 Card1.Amixer.info: Card hw:1 'U0x46d0x9a4'/'USB Device 0x46d:0x9a4 at usb-0000:00:1a.7-3.3, high speed' Mixer name : 'USB Mixer' Components : 'USB046d:09a4' Controls : 2 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum Capture channels: Mono Limits: Capture 0 - 14 Mono: Capture 0 [0%] [23.75dB] [on] Date: Tue Mar 16 10:07:41 2010 DistroRelease: Ubuntu 10.04 Frequency: Once a day. HibernationDevice: RESUME=UUID=762f3439-67ac-4828-aa94-caf2a2ba0f9a InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) LiveMediaBuild: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) MachineType: Dell Inc. Latitude E5500 Package: linux-image-2.6.32-16-generic 2.6.32-16.25 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic root=UUID=4ce5e12b-6e82-4fa4-90ff-7d9859d7504e ro quiet splash ProcEnviron: LANG=en_GB.utf8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.32-16.25-generic Regression: Yes RelatedPackageVersions: linux-firmware 1.32 Reproducible: No SourcePackage: linux TestedUpstream: No Uname: Linux 2.6.32-16-generic x86_64 dmi.bios.date: 11/05/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A15 dmi.board.name: 0DW635 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA15:bd11/05/2009:svnDellInc.:pnLatitudeE5500:pvr:rvnDellInc.:rn0DW635:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude E5500 dmi.sys.vendor: Dell Inc. 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