Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2010-02-03 Thread Steve McGrath
I can confirm that BIOS 1.26 fixes this. Funny, 2nd level support swore
up and down that there wasn't a problem...

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2010-01-06 Thread Runar Ingebrigtsen
I am in contact with Acer Level 2 support and they have been friendly
but unable to help me out. According to them, the D250 with Windows 7
they have for testing shows no issues like this at all. It fully runs at
1.66 GHz.

I was asked to return my laptop to second level support for a closer
review, but right now I can't do that since I have no other computer for
school usage.

So I'm stuck. Acer says nothing's wrong and won't accept that there
might be without seeing a customer case in person.

I am interested enough that I consider buying a new computer just to let
them lay their hands on my existing. It's just that I'm a student...
Sigh. How hard can it be, really?

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-22 Thread Runar Ingebrigtsen
ti., 22.12.2009 kl. 22.22 +, skrev summerfk:
> This bug isn't invalid. It affects a whole range of machines, not just  
> Lenovo.

You are absolutely correct that this is a real bug, but you overestimate
the area of function for this particular bug tracker. This is a BIOS
bug, in a Ubuntu bug tracker regarding the Ubuntu implementation of the
software called CPU frequency daemon. As such, the area of function for
this bug tracker does not coincide with the technology in which we have
located this bug. Alas, the bug is invalid in the given area.

We all agree this bug should be fixed by the relevant party, but this
has nothing to do with Ubuntu and will not ever have anything to do with
Ubuntu.

I'm not sure I would like to see this bug closed, but I understand every
reason to do so. This is like discussing the lack of internet connection
with your plumber. "I hear you, but why don't you call your ISP?"

For my part, I have sent a request to get my money back for a purchase
that gave me less than advertised.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-22 Thread summerfk
This bug isn't invalid. It affects a whole range of machines, not just  
Lenovo.


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On 23 Dec 2009, at 02:57, rkagan  wrote:

> On Tue, Dec 22, 2009 at 01:15:29PM -, Geralt wrote:
>> Is Lenovo aware of this problem? I've seen some links here to  
>> topics in
>> their forums, but no statement from Lenovo.
>
> Lenovo has no public issue tracker so you never can tell.
>
> I'm discussing the problem with their local support contact.  However
> it's dealt with at low priority because nobody but me complained so  
> far.
>
> Again: there's no bug in Ubuntu nor in Linux in general.  The MSI
> success story is yet another confirmation.  There's no point polluting
> Ubuntu bugspace with this.
>
> Let's close this bug as INVALID or whatever is appropriate, and let  
> the
> people complain to their vendors.
>
> -- 
> Atom N280 frequency scaling not supported
> https://bugs.launchpad.net/bugs/422858
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “cpufreqd” package in Ubuntu: Confirmed
>
> Bug description:
> Seems like there's a few people out there with a common problem. I  
> can't get my Ubuntu 9.04 to manage the frequency of the Atom N280  
> CPU at 1,6 GHz on my Acer One D250 HD.
>
> A quick google with bing later I found that I could "sudo modprobe  
> acpi_cpufreq" except this returns "FATAL: Module acpi_cpufreq not  
> found". A "sudo dpkg-reconfigure gnome-applets" didn't cut it either.
>
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies  
> returns:
> 1333000 1066000 80
>
> Which shouldn't be, as /proc/cpuinfo, as well as Windows 7, states  
> it's a 1,66GHz:
> model name: Intel(R) Atom(TM) CPU N280   @ 1.66GHz
> stepping: 2
> cpu MHz: 1333.000
> power management:
>
> Though it seems the frequency is locked at 1,3GHz and that there's  
> no power management involved.
>
> Other peoples struggles with this:
> http://ubuntuforums.org/showthread.php?t=1201352&highlight=n280
> http://ubuntuforums.org/archive/index.php/t-1209082.html
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/ubuntu/+source/cpufreqd/+bug/422858/+subscribe

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-22 Thread rkagan
On Tue, Dec 22, 2009 at 01:15:29PM -, Geralt wrote:
> Is Lenovo aware of this problem? I've seen some links here to topics in
> their forums, but no statement from Lenovo.

Lenovo has no public issue tracker so you never can tell.

I'm discussing the problem with their local support contact.  However
it's dealt with at low priority because nobody but me complained so far.

Again: there's no bug in Ubuntu nor in Linux in general.  The MSI
success story is yet another confirmation.  There's no point polluting
Ubuntu bugspace with this.

Let's close this bug as INVALID or whatever is appropriate, and let the
people complain to their vendors.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-22 Thread summerfk
Don't know. I have Acer.

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On 22 Dec 2009, at 22:15, Geralt  wrote:

> Is Lenovo aware of this problem? I've seen some links here to topics  
> in
> their forums, but no statement from Lenovo.
>
> -- 
> Atom N280 frequency scaling not supported
> https://bugs.launchpad.net/bugs/422858
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “cpufreqd” package in Ubuntu: Confirmed
>
> Bug description:
> Seems like there's a few people out there with a common problem. I  
> can't get my Ubuntu 9.04 to manage the frequency of the Atom N280  
> CPU at 1,6 GHz on my Acer One D250 HD.
>
> A quick google with bing later I found that I could "sudo modprobe  
> acpi_cpufreq" except this returns "FATAL: Module acpi_cpufreq not  
> found". A "sudo dpkg-reconfigure gnome-applets" didn't cut it either.
>
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies  
> returns:
> 1333000 1066000 80
>
> Which shouldn't be, as /proc/cpuinfo, as well as Windows 7, states  
> it's a 1,66GHz:
> model name: Intel(R) Atom(TM) CPU N280   @ 1.66GHz
> stepping: 2
> cpu MHz: 1333.000
> power management:
>
> Though it seems the frequency is locked at 1,3GHz and that there's  
> no power management involved.
>
> Other peoples struggles with this:
> http://ubuntuforums.org/showthread.php?t=1201352&highlight=n280
> http://ubuntuforums.org/archive/index.php/t-1209082.html
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/ubuntu/+source/cpufreqd/+bug/422858/+subscribe

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-10 Thread rkagan
On Thu, Dec 10, 2009 at 06:47:30AM -, summerfk wrote:
> I get the same problem under Windows 7 - maximum speed is 1.33GHz
> [...]
> machine doesn't have the issue under XP.
> [...]
> I wonder why XP is different? 

Most likely the reason is different power profiles (by default XP has
EIST off).

> Win7 reports 1.33Ghz
> CPUZ reports 1.66Ghz
> So is this just a Win7 reporting bug?

I guess it's rather CPU-Z reporting bug (or feature, they may just be
not interested in the *actual* state).

You should try Intel's own utility:
http://www.intel.com/support/processors/tools/piu/

Also there are quite a few facts on power management at
http://www.intel.com/support/processors/sb/CS-028855.htm

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-03 Thread rkagan
On Thu, Dec 03, 2009 at 12:25:12AM -, Runar Ingebrigtsen wrote:
> I have upgraded to Karmic, so here's my SSDT2 table.

Identical to mine.

> Besides, I found this forum discussing how to load custom SSDT tables for 
> MacOS X:
> 
> Stupid Question: Is this a possible approach in Grub?

In principle yes:
http://www.lesswatts.org/projects/acpi/overridingDSDT.php
but that's way too hackish.

Also, as noted at
http://episteme.arstechnica.com/eve/forums/a/tpc/f/77909774/m/840002350041?r=665000550041#665000550041,
the BIOS has problems with other P-states for this CPU (we have 800,
1066, 1333 while it should've been something like 833, 1000, 1333,
1666), so it must be doing something wrong in general.

I still believe we need to get this fixed in the BIOS.  If anybody has
similar data on offtopic systems that would be a more convincing
argument for the vendor.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-02 Thread rkagan
Interesting news: MSI issues a BIOS update for its Atom N280-based
netbook Wind U100 Plus with a changelog:

Modify the string of CPU Frequency for W7

Dunno what that means but the owner may want to check it out:
http://eu.msi.com/index.php?func=downloaddetail&type=bios&maincat_no=135&prod_no=1784

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-02 Thread rkagan
On Wed, Dec 02, 2009 at 03:53:50AM -, Mehmet Atif Ergun wrote:
> I've got a aod250-1613 (intel n280 + android + xp version) and this
> affects me too. but is it possible that this is about the kernel rather
> than cpufreqd (that's a deamon, right?)?

As can be seen in the discussion above this is neither about cpufreqd
nor the kernel.  It's about BIOS bug.

> I did not install cpufreqd. If I echo ondemand >
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor (from arch wiki),
> it freqs down. And, again without modprobing acpi_cpufreq (or after
> modprobing), the max freq shows itself to be 1.33 and not 1.66.

Without acpi-cpufreq loaded you wouldn't have cpufreq subdirectory at
all.  And you *would* have your CPU frequency at 1.66 GHz.

> Can that mean that there is something wrong with how the kernel reads
> its info?

No.  By loading acpi-cpufreq you indicate that you want to control your
CPU's frequency, selecting among the available P-states. The top P-state
reported by the BIOS is 1.33 GHz.  Complain to your BIOS vendor.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-12-01 Thread rkagan
I just noticed that Acer released a new BIOS for AOD250, with no release
notes as usual.

Has anybody tried?  Does it fix anything?

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-16 Thread rkagan
On Mon, Nov 16, 2009 at 12:13:21PM -, Runar Ingebrigtsen wrote:
> fr., 13.11.2009 kl. 09.03 +, skrev rkagan:
> > The P-state tables are located in dynamic SSDTs, look at
> > /sys/firmware/acpi/tables/dynamic/SSDT2
> 
> The dynamic folder doesn't exist in my sys acpi tree.

That was added in 2.6.29 development time.  Apparently you have an older
kernel.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-16 Thread Runar Ingebrigtsen
fr., 13.11.2009 kl. 09.03 +, skrev rkagan:
> The P-state tables are located in dynamic SSDTs, look at
> /sys/firmware/acpi/tables/dynamic/SSDT2

The dynamic folder doesn't exist in my sys acpi tree.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-13 Thread rkagan
On Thu, Nov 12, 2009 at 11:55:33PM -, Runar Ingebrigtsen wrote:
> I did like you mentioned in that post, but I don't see the same as you
> on my D250. This is my decoded SSDT file. I don't know how to point out
> anything here to Acer.

Your SSDT table is exactly the same as mine, except for the addresses of
the dynamic SSDTs due to 2 GB RAM in your machine vs 1 GB in mine ;)

The P-state tables are located in dynamic SSDTs, look at
/sys/firmware/acpi/tables/dynamic/SSDT2

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-12 Thread Runar Ingebrigtsen
I tested the BIOS from Acer and got 1.66GHz but no power saving, as I
expected after comments here. I replied with a compliment, asking for
another attempt with focus on _both_ performance _and_ power saving. I
also asked why we can't just get a BIOS with tables saying we have four
speed steps.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-12 Thread Runar Ingebrigtsen
I agree this shouldn't be a Ubuntu bug, but more people will probably
look for this issue, so I suggest we keep it open until we see how it
plays out with Acer. :)

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-12 Thread rkagan
I've added a comment with a few details on the matter at
http://forums.lenovo.com/t5/Linux-Discussion/S10-2-Wrong-Clockspeed-ACPI-Table-Error/m-p/175100#M1616.

You may want to try the same techniques to isolate the problem and make
it a stronger case for Acer support.

Meanwhile I feel ashamed keeping this bug open on Ubuntu when it's
purely a h/w vendor fault.  I suggest closing it with an appropriate
status.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-12 Thread Runar Ingebrigtsen
I wrote Acer, quoting your post to see what they say about that. I agree
that battery time is what's most important. To me this is a case of not
getting what was advertised and what was paid for.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-11 Thread rkagan
On Wed, Nov 11, 2009 at 11:35:45PM -, Runar Ingebrigtsen wrote:
> "We have reached the conclusion that Intel's EIST power saving feature
> is the source of varying frequency for this model.

That's sorta telling the obvious.  The whole point of this feature is
to save power by varying the cpu clock rate.  E.g. on a mostly idle
system the clock sticks at its minimum, 800MHz.

The problem is not in the feature per se, but in the fact that the BIOS
reports the range of available frequencies smaller than the processor is
actually capable of.  As a result, the processor can't reach its maximum
speed when it's needed because the OS thinks that the maximum is lower.

Disabling the speed adjustment can be done by e.g. unloading the
acpi-cpufreq module (well, from your original post I conclude that this
may not be possible with Ubuntu kernel as it's apparently compiled in
the kernel).  However, you lose some of your on-battery time.

So consider their proposal as a temporary workaround, which I wouldn't
even apply myself becase I care more about the on-battery time than
about the max cpu speed.

A more likely reason for the problem is that their BIOS (InsydeH2O, as
in my Lenovo S10-2, right?) is older than the processor and doesn't
recognize its features, doing some defaults instead.  This would also
explain the other problem we both suffer from, the absense of NX bit
support (which BTW is a security feature).

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-11 Thread Runar Ingebrigtsen
I received an email from Acer Norway about my Acer Aspire One D250,
translated quote:

"We have reached the conclusion that Intel's EIST power saving feature
is the source of varying frequency for this model. In our custom BIOS'
there is no switch for this feature, which means there is no choice but
to run the computer with this feature enabled. To correct this behavior
I made a request for a BIOS release with a direct option to deactivate
Intel EIST. Please use the attached BIOS version and get back to me with
your results."

Unfortunately I haven't been able to flash my BIOS with this new version
yet. My problem is that it's DOS-dependent and the flashit program just
crashed on me when running it in FreeDOS from a USB memory stick. I have
made a request for a Windows version like former BIOS releases from
Acer, as I dual boot Windows 7 and Ubuntu.

I don't dare to upload that BIOS release here on launchpad.net, due to
it's potential to brick computers and likely copyright restrictions.

All in all I'm having a positive dialogue with Acer. I will recommend
that you make contact with the support crew for your computer maker and
let them know about this bug here on launchpad. I insisted on getting
technical support in spite of the usual mindless comments like "you have
to return your PC so we can repair it" from 1st level support. I got
forwarded to 2nd level support and they actually look into this issue,
which is more than we are all used to expect. I also sent them all the
links I from launchpad.

Sending copy of this comment to Acer Nordic 2nd level support, so here
goes signature.

Best Regards
Runar Ingebrigtsen

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-11-02 Thread Runar Ingebrigtsen
I see, thank you for pointing out such obvious facts in a friendly
manner. ;)

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-10-19 Thread Runar Ingebrigtsen
I was asked to give the Windows 7 screenshot and my serial number again,
so I uploaded the screens here for the Acer people to get involved, if
they want to. :) At least they're getting back to me, asking for more
information, which is more than I've learned to expect from different PC
makers over the years.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-10-15 Thread Runar Ingebrigtsen
I'm in touch with 2nd line support for Acer Nordic, and they tell me the
issue have been escalated to 3rd line support at Acer HQ. I sent a reply
to notify them of the D150, too.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-10-05 Thread Runar Ingebrigtsen
I just received news from Acer that supposedly there's a new BIOS
version coming up from Taiwan with correct ACPI tables. I have yet to
receive the link but will post it here ASAP.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-09-30 Thread Runar Ingebrigtsen
I have updated my BIOS with the latest version (Acer BIOS version 1.15
as of 2009/09/21) and it makes no difference. I will contact Acer for an
explanation.

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Re: [Bug 422858] Re: Atom N280 frequency scaling not supported

2009-09-30 Thread Runar Ingebrigtsen
I can confirm that the kernel is getting the wrong CPU speed from the
BIOS ACPI tables. Booting with acpi=off gives me 1.66 MHz (full speed)
but no frequency scaling (off course, since acpi is disabled).

Does anyone know of a working coreboot image for Aspire One? ;)

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