[Pm-utils] Updates in pm-utils master

Victor Lowther victor.lowther at gmail.com
Wed Jun 9 03:41:18 PDT 2010

On Tue, Jun 8, 2010 at 2:31 PM, Chase Douglas
<chase.douglas at canonical.com> wrote:
> On Mon, 2010-06-07 at 18:18 -0500, Victor Lowther wrote:
>> On Mon, 2010-06-07 at 13:46 -0400, Chase Douglas wrote:
>> > I see you grabbed the sata link power management script. This script
>> > actually causes some device failures on Ubuntu 10.04 LTS (which is based
>> > on 2.6.32). We are near to releasing a stable release update to remove
>> > that script. I hadn't deleted it yet from our development tree in the
>> > hope that we could fix the kernel issue before 10.10 ships. However, I
>> > think it makes sense to release this script as you have it in pm-utils,
>> > but to disable it by default until we can confirm it is fixed in the
>> > upstream kernel.
>> It seems to be working normally for me on 2.6.34.  Can you point me at a
>> bug number?
> I've seen two reports. The first is where we are tracking removal for
> 10.04 LTS:
>        http://bugs.launchpad.net/bugs/539467
> The second (which I just found) is likely a dupe, but I mention it
> because comments have indicated that it has been fixed in 2.6.33:
>        http://bugs.launchpad.net/bugs/528981
> Given that we don't have any reports against 2.6.33 or later, it's
> reasonable to leave it in and enabled by default I think.

OK, I found the kernel commit linked to that fixed the sata alpm bug
-- commit 6013efd8860bf15c1f86f365332642cfe557152f went in around the
2.6.33-rc1 timeframe.

I have updated the sata_alpm hook to refuse to do anything if the
kernel version is less than 2.6.33, because corrupted filesystems are
Not Fun.

>> > Do you know when this might be released? I hope we can pick it up for
>> > Ubuntu 10.10, in which case it needs to be released in the next month or
>> > so if at all possible.
>> It depends on what other feedback I get.  If I do not hear anything by
>> this weekend, I will call it 1.4.0-rc1, and all goes well the week after
>> that will be 1.4.0, along with a new pm-quirks.
> Well I may throw a wrench in that :). I found two small bugs and will
> follow this email up with patches.

No, fixing small bugs like these does not delay things.

Fixing large ones does. :)

>> > Again, thank you so much for the integration and writing of the new
>> > scripts. You've made this task much easier for me, and I think it will
>> > improve performance for Ubuntu users and users of other distros greatly.
>> I don't know about performance, but it should help out battery life. :)
> I consider battery performance part of overall performance :)
> -- Chase

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