Did it fix it even after suspending / hibernating on battery?
On Mon, Oct 27, 2008 at 2:11 PM, Babyshamble <[EMAIL PROTECTED]>wrote: > I got it fixed in a HP 6720b with a fresh install of Intrepid and with > laptop_mode on acpi properties. Did you enable it? > > On Mon, Oct 27, 2008 at 1:42 PM, Igor Vatavuk > <[EMAIL PROTECTED]>wrote: > > > I am still affected by this bug in the fresh install of Intrepid RC, this > > bug is not fixed! > > Hdparm reports: Advanced power management level: 128 > > Laptop is plugged in AC (it's HP 6710b)... I'm back to 99-hdd-ugly-fix > > > > -- > > High frequency of load/unload cycles on some hard disks may shorten > > lifetime > > https://bugs.launchpad.net/bugs/59695 > > You received this bug notification because you are a direct subscriber > > of the bug. > > > > Status in The Dell Project: Confirmed > > Status in "acpi-support" source package in Ubuntu: Fix Released > > Status in "linux-meta" source package in Ubuntu: New > > Status in "pm-utils" source package in Ubuntu: New > > Status in acpi-support in Ubuntu Hardy: Triaged > > Status in linux-meta in Ubuntu Hardy: New > > Status in pm-utils in Ubuntu Hardy: New > > Status in "acpi-support" source package in Baltix: New > > Status in "acpi-support" source package in Debian: Fix Released > > Status in "pm-utils" source package in Fedora: Invalid > > Status in "laptop-mode-tools" source package in Mandriva: Confirmed > > Status in Suse Linux: Fix Released > > > > Bug description: > > This is not a support forum. Please do not use it as such (even though > it > > has been used as such already). > > > > You can scan through the bug for links to the Ubuntu forums where many, > > many different questions have been asked, answered, and re-answered. The > > temporary workaround is just below. > > > > See https://wiki.ubuntu.com/PowerManagement for an overview about what > is > > involved and for a remedy. > > > > > > Following is a summary of the issue: > > It is confirmed that some systems are seeing an unusually high number of > > load/unload cycles on their hard disks, as evidenced by smartctl. > > > > It was originally surmised that this was related to laptop-mode being > > enabled, but this especially affects systems where laptop-mode is > disabled. > > In fact, aggressive APM is not a bad idea while a system is not on AC, > as > > that system is much more likely to encounter a physical impact. > > > > This is due to disk APM settings that let the heads park or disk spin > down > > after an idle period that is shorter than the regular disk access > patterns > > of the OS. > > > > Then, the heads are only parked for a very short period of time and > almost > > imediately loaded again. Making impact protection much ineffective and > > wearing out the drive. > > > > It can happen when the disk asumes aggressive APM settings (like many > > laptop disks) and the OS does not take care to set the APM settings > > accordingly to its current disk access pattern. > > > > This problem has been confirmed in Ubuntu as well as in other > distributions > > and on MacOS X and Windows. > > > > Symptoms of this bug are: > > * Frequent HD clicks -- more than one per 3 minutes while idle, louder > > than the typical access sounds. Often more than twice per minute. On > some > > disks, the click is very quiet > > * Rapidly Increasing Load_Cycle_Count as displayed in the final number in > > "sudo smartctl -a /dev/hda | grep Load_Cycle_Count" (where /dev/hda is > > replaced with your own hard disk device) > > * Early hard disk failure never stay parked, due to very frequent disk > > activity. Thus this cycle occurs often, thus wearing out the drive, and > any > > comparative benefit is negligible (whereas, if the-- some disks are cut > down > > to less than a year of actual uptime. > > > > The problem is only present due to the existence of *all four* of the > > following factors: > > * Hardware is set (default or otherwise) to aggressive power management, > > causing heads to park. (default behaviour of many drives and often the > only > > user available type of power management) > > * Disk is touched often, causing heads to unpark. (default behaviour of > > many distributions) > > * Drives are spec'd to a limited number of these cycles. (600,000 is the > > most common, although some may be spec'd higher or lower). > > * The OS not setting disk APM variables according to current disk access > > pattern. > > > > Reasonable Limits / Criteria for a fix: > > * There should be fewer than ~15 load cycles per hour, except during > heavy > > usage while on battery. > > * This provides a life expectancy of over four years, which is reasonable > > for a hard disk. > > > > Temporary Workaround: > > * Follow the above link. > > > > Permanent Fix: > > * Obtain utility from your hard drive manufacturer to change the default > > head parking time if available. > > * Contrlolling the APM variables of hard drives according to the current > > disk access pattern. (i.e. chunked into blocks with minutes of idle time > > (disk-idleing or "laptop_mode") or continous disk access every x seconds > > expecting the disks to stay up all the time.) > > > > Some hardware with this issue: > > WD1200VE -- http://www.wdc.com/en/library/portable/2879-001121.pdf -- > This > > aggressive parking is a feature of this disk, but that feature relies on > > behaviour that allows for significant amounts of (truly) idle time > without > > the disk being touched. Notice the "Load/unload cycles" of 600,000. > > > > Example Load_Cycle_Counts: > > * Thinkpad Z60m/Hitachi HTS541080G9SA00 with well over 7000 load cycles > in > > only 100 hours. That's >70 per hour. > > * Gateway MT6451/Western Digital WD1200VE with 164762 load cycles in 3747 > > hours (156 days) of uptime. That's ~43 per hour -- except that the > system > > was patched during the initial third of its life, which puts it at > ~63/hour > > since Gutsy was installed (and wasn't patched, as I had done with > feisty). > > > > Please see for yourself how often your drive is load cycling: > > smartctl -d ata -a /dev/sda > > (This command is for an SATA drive; you'll need to install the > > smartmontools package first.) > > > > You can get the average per hour by the following division: > > Load_Cycle_Count / Power_On_Hours > > > > Old workaround for 7.10 (not working in 8.04): > > > https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/59695/comments/14 > > A more extensive description of the workaround: > > http://ubuntuforums.org/showthread.php?t=591503 > > > > You may need to use '254', or a bit lower, as opposed to '255'. If HD > > temperature gets high, you may want to set it all the way "down" to 200 > or > > so. ~1 click every 2.5-3 minutes is fine. > > Note: Some disks are unresponsive to having their APM changed by hdparm, > > and therefore the workaround doesn't work. It would be a good idea, in > such > > cases, to disable APM in the BIOS if possible. > > > > See also http://paul.luon.net/journal/hacking/BrokenHDDs.html for a > rather > > dramatic account of the effects the current default values may have. > > > > > > -- > High frequency of load/unload cycles on some hard disks may shorten > lifetime > https://bugs.launchpad.net/bugs/59695 > You received this bug notification because you are a direct subscriber > of a duplicate bug. > -- High frequency of load/unload cycles on some hard disks may shorten lifetime https://bugs.launchpad.net/bugs/59695 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
