Public bug reported:

Might be a regression from Hardy: https://bugs.launchpad.net/bugs/231342

r...@ubuntu:/# echo min_power > 
/sys/class/scsi_host/host0/link_power_management_policy
r...@ubuntu:/# cat /sys/class/scsi_host/host0/link_power_management_policy
max_performance
r...@ubuntu:/#

ProblemType: Bug
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  joris      3089 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd4400000 irq 22'
   Mixer name   : 'Intel G45 DEVCTG'
   Components   : 'HDA:10ec0269,1025022b,00100004 
HDA:80862802,80860101,00100000'
   Controls      : 23
   Simple ctrls  : 12
Date: Fri Sep 11 17:04:21 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=3f4200c1-4289-4ec8-9515-11e12561cd79
MachineType: Acer Aspire 5810T
Package: linux-image-2.6.31-10-generic 2.6.31-10.32
PccardctlIdent:
 
PccardctlStatus:
 
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-10-generic 
root=UUID=d9aeca27-f2de-4b4b-ac98-9ff714300820 ro quiet splash 
libata.force=noncq usbcore.autosuspend=1
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-10.32-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-10-generic 2.6.31-10.12
 linux-firmware 1.16
SourcePackage: linux
Uname: Linux 2.6.31-10-generic x86_64
dmi.bios.date: 06/24/2009
dmi.bios.vendor: INSYDE
dmi.bios.version: V1.23
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 5810T
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 1
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnINSYDE:bvrV1.23:bd06/24/2009:svnAcer:pnAspire5810T:pvrV1.23:rvnAcer:rnAspire5810T:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion:
dmi.product.name: Aspire 5810T
dmi.product.version: V1.23
dmi.sys.vendor: Acer

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug

-- 
unable to modify scsi host link_power_management_policy
https://bugs.launchpad.net/bugs/427925
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