Re: still in 3.9-rc6 - fan speed at 100% after suspend/resume regression

Re: still in 3.9-rc6 - fan speed at 100% after suspend/resume regression

[Jake Edge]

[ not sure why, but the lkml address got munged in Rui's reply ...
fixed now -- sorry for the dupe ]

On Sun, 14 Apr 2013 02:20:15 +0800 Zhang Rui wrote:

> > A brief recap: after resuming, the fan on the laptop spins up to
> > full speed and stays there. "temp6" in "acpitz-virtual-0" (as shown
> > by "sensors") is 100°C and stays there, which is presumably what is
> > making the fan stay on.
> > 
> first, this seems like the same problem reported at
> https://bugzilla.kernel.org/show_bug.cgi?id=50041
> please refer to comment #17 and #27.

Yes, it does seem like the same bug that Matthias is talking about in
those comments ...
 
> > Is more information needed?
> > 
> please attach the acpidump output of your laptop.

I have the dump, do you want it on the old closed bug or shall I wait
until Matthias opens a new one?

> can you please test thermal -thermal branch at
> git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git

I just tried it, no difference in behavior (fan on full, temp6 ==
100°C) ...

I took all the defaults when I did a 'make oldconfig', some of which
looked thermal-related ... was I supposed to set them differently?

thanks,

jake

-- 
Jake Edge - LWN - jake@lwn.net - http://lwn.net

Re: still in 3.9-rc6 - fan speed at 100% after suspend/resume regression

[Ville Syrjälä]

On Sat, Apr 13, 2013 at 10:02:21AM -0600, Jake Edge wrote:
> Hi Zhang Rui,
> 
> The problem reported in https://lkml.org/lkml/2012/12/4/428 (and
> incorrectly attributed to a suspend patch by me here:
> https://lkml.org/lkml/2013/4/12/314) still exists in 3.9-rc6, at least
> for my HP/Compaq 2510p laptop. It appeared that some folks were seeing
> some improvement with earlier 3.9-rcs (?) but I just tested rc6 and saw
> substantially the same behavior.  This all works fine in <= 3.6.11.
> 
> A brief recap: after resuming, the fan on the laptop spins up to full
> speed and stays there. "temp6" in "acpitz-virtual-0" (as shown by
> "sensors") is 100°C and stays there, which is presumably what is making
> the fan stay on.

My HP Compaq NC6000 exhibits slightly different behaviour. For me the
reported temp is always accurate but the trip points get out of sync
with the actual temperature.

With 3.7 I saw two different kinds of problems coming out of resume.
In one case the fan stays on until the temp rises high enough to get the
trip points back into sync. In the other case the fan goes off, and stays
off even when the temperature rises above the highest active trip point,
but it does appear to get back into sync when the temp starts to come back
down. I think the difference might stem from resuming when the laptop has
cooled down fully vs. when it's still warm.

I also just tried 3.9-rc6, and that one appears to behave differently
to 3.7, but still wrong. There the fan goes off after resume, and comes
back on as the temperature rises, but it never slows back down after
that.

I'll try to collect some more detailed dumps of all three cases.

-- 
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/

Re: still in 3.9-rc6 - fan speed at 100% after suspend/resume regression

[Ville Syrjälä]

On Sun, Apr 14, 2013 at 12:44:00AM +0300, Ville Syrjälä wrote:
> On Sat, Apr 13, 2013 at 10:02:21AM -0600, Jake Edge wrote:
> > Hi Zhang Rui,
> > 
> > The problem reported in https://lkml.org/lkml/2012/12/4/428 (and
> > incorrectly attributed to a suspend patch by me here:
> > https://lkml.org/lkml/2013/4/12/314) still exists in 3.9-rc6, at least
> > for my HP/Compaq 2510p laptop. It appeared that some folks were seeing
> > some improvement with earlier 3.9-rcs (?) but I just tested rc6 and saw
> > substantially the same behavior.  This all works fine in <= 3.6.11.
> > 
> > A brief recap: after resuming, the fan on the laptop spins up to full
> > speed and stays there. "temp6" in "acpitz-virtual-0" (as shown by
> > "sensors") is 100°C and stays there, which is presumably what is making
> > the fan stay on.
> 
> My HP Compaq NC6000 exhibits slightly different behaviour. For me the
> reported temp is always accurate but the trip points get out of sync
> with the actual temperature.
> 
> With 3.7 I saw two different kinds of problems coming out of resume.
> In one case the fan stays on until the temp rises high enough to get the
> trip points back into sync. In the other case the fan goes off, and stays
> off even when the temperature rises above the highest active trip point,
> but it does appear to get back into sync when the temp starts to come back
> down. I think the difference might stem from resuming when the laptop has
> cooled down fully vs. when it's still warm.
> 
> I also just tried 3.9-rc6, and that one appears to behave differently
> to 3.7, but still wrong. There the fan goes off after resume, and comes
> back on as the temperature rises, but it never slows back down after
> that.
> 
> I'll try to collect some more detailed dumps of all three cases.

I filed a new bug and attached all my logs:
https://bugzilla.kernel.org/show_bug.cgi?id=56591

-- 
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/

Re: still in 3.9-rc6 - fan speed at 100% after suspend/resume regression

[Eduardo Valentin]

On 13-04-2013 19:46, Ville Syrjälä wrote:
> On Sun, Apr 14, 2013 at 12:44:00AM +0300, Ville Syrjälä wrote:
>> On Sat, Apr 13, 2013 at 10:02:21AM -0600, Jake Edge wrote:
>>> Hi Zhang Rui,
>>>
>>> The problem reported in https://lkml.org/lkml/2012/12/4/428 (and
>>> incorrectly attributed to a suspend patch by me here:
>>> https://lkml.org/lkml/2013/4/12/314) still exists in 3.9-rc6, at least
>>> for my HP/Compaq 2510p laptop. It appeared that some folks were seeing
>>> some improvement with earlier 3.9-rcs (?) but I just tested rc6 and saw
>>> substantially the same behavior.  This all works fine in <= 3.6.11.
>>>
>>> A brief recap: after resuming, the fan on the laptop spins up to full
>>> speed and stays there. "temp6" in "acpitz-virtual-0" (as shown by
>>> "sensors") is 100°C and stays there, which is presumably what is making
>>> the fan stay on.
>>
>> My HP Compaq NC6000 exhibits slightly different behaviour. For me the
>> reported temp is always accurate but the trip points get out of sync
>> with the actual temperature.
>>
>> With 3.7 I saw two different kinds of problems coming out of resume.
>> In one case the fan stays on until the temp rises high enough to get the
>> trip points back into sync. In the other case the fan goes off, and stays
>> off even when the temperature rises above the highest active trip point,
>> but it does appear to get back into sync when the temp starts to come back
>> down. I think the difference might stem from resuming when the laptop has
>> cooled down fully vs. when it's still warm.
>>
>> I also just tried 3.9-rc6, and that one appears to behave differently
>> to 3.7, but still wrong. There the fan goes off after resume, and comes
>> back on as the temperature rises, but it never slows back down after
>> that.
>>
>> I'll try to collect some more detailed dumps of all three cases.
>
> I filed a new bug and attached all my logs:
> https://bugzilla.kernel.org/show_bug.cgi?id=56591
>


Rui, does this one gets fixed with your series to make the parts of 
thermal framework to be glued together in a single module? Or does this 
one is a new bug?

Re: still in 3.9-rc6 - fan speed at 100% after suspend/resume regression

[Zhang Rui]

On Mon, 2013-04-15 at 09:30 -0400, Eduardo Valentin wrote:
> On 13-04-2013 19:46, Ville Syrjälä wrote:
> > On Sun, Apr 14, 2013 at 12:44:00AM +0300, Ville Syrjälä wrote:
> >> On Sat, Apr 13, 2013 at 10:02:21AM -0600, Jake Edge wrote:
> >>> Hi Zhang Rui,
> >>>
> >>> The problem reported in https://lkml.org/lkml/2012/12/4/428 (and
> >>> incorrectly attributed to a suspend patch by me here:
> >>> https://lkml.org/lkml/2013/4/12/314) still exists in 3.9-rc6, at least
> >>> for my HP/Compaq 2510p laptop. It appeared that some folks were seeing
> >>> some improvement with earlier 3.9-rcs (?) but I just tested rc6 and saw
> >>> substantially the same behavior.  This all works fine in <= 3.6.11.
> >>>
> >>> A brief recap: after resuming, the fan on the laptop spins up to full
> >>> speed and stays there. "temp6" in "acpitz-virtual-0" (as shown by
> >>> "sensors") is 100°C and stays there, which is presumably what is making
> >>> the fan stay on.
> >>
> >> My HP Compaq NC6000 exhibits slightly different behaviour. For me the
> >> reported temp is always accurate but the trip points get out of sync
> >> with the actual temperature.
> >>
> >> With 3.7 I saw two different kinds of problems coming out of resume.
> >> In one case the fan stays on until the temp rises high enough to get the
> >> trip points back into sync. In the other case the fan goes off, and stays
> >> off even when the temperature rises above the highest active trip point,
> >> but it does appear to get back into sync when the temp starts to come back
> >> down. I think the difference might stem from resuming when the laptop has
> >> cooled down fully vs. when it's still warm.
> >>
> >> I also just tried 3.9-rc6, and that one appears to behave differently
> >> to 3.7, but still wrong. There the fan goes off after resume, and comes
> >> back on as the temperature rises, but it never slows back down after
> >> that.
> >>
> >> I'll try to collect some more detailed dumps of all three cases.
> >
> > I filed a new bug and attached all my logs:
> > https://bugzilla.kernel.org/show_bug.cgi?id=56591
> >
> 
> 
> Rui, does this one gets fixed with your series to make the parts of 
> thermal framework to be glued together in a single module?

No.

>  Or does this 
> one is a new bug?
> 
right, it is a new bug.

thanks,
rui