For the D150 I can confirm that BIOS Version 1.13 enables now the
maximum frequency of 1.67 GHz.
I am wondering about the minimum (or idle) frequency.
cpufreq-info is now reporting a minimum frequency of 1000 MHz instead
of 800 MHz with previous BIOS versions.
This would result in a shorter
Wonderful news! Very happy that Acer finally fixed this! I was almost
loosing hope when some people falsely claimed that it was a Linux
problem and not a general ACPI problem.
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Can confirm 1.13 fixes this on D150. As caiacoa I'm wondering why we
lost the 800 MHz speeed though, currently only 1.67 GHz, 1.33 GHz and
1000 MHz are available. This is way better than what was before, still I
would prefer all four speeds available for cpufreqd Well you can't
have it all can
@ Pugo: I guess they would never have fixed this problem if it didn't
manifest on Windows 7 also. Acers comment to the new BIOS: Fixes Atom
N280 CPU frequency incorrect in Windows 7 OS. ;)
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Acer have released BIOS v1.26 for the D250. This seems to address the
frequency problem. Alas, my D250 refuses to boot Ubuntu every time, so I
have had to go with W7.
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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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I am now able to confirm that Acer D250 BIOS version 1.26 fixes this
issue. 2nd level support told me I had to turn in my computer for them
to have a look. I am glad I didn't.
** Changed in: cpufreqd (Ubuntu)
Status: Confirmed = Fix Released
--
Atom N280 frequency scaling not supported
I don't know if this is a solution but if you don't compile acpi-cpufreq
inside kernel but as a module (choose M instead Y) cat /proc/cpuinfo
reports 1662 Mhz. This also enables you to modprobe any other module you
decide to compile as module in kernel configuration (you won't get
device or
As far as i know (and wikipedia confirms:
http://en.wikipedia.org/wiki/SpeedStep#Operating_system_support) XP does
use EIST. When idle my computer - properties shows 800MHz, under load
(youtube with HD video) it rises to 1,66GHz. EIST in XP is disabled when
power managment profile is set to
I recently purchased Aspire one D250 with Win XP Home, i wiped entire
disk, repartitioned, then installed Win XP Home SP3 (not Acers restore
disc, but from regular install CD), after that Ubuntu 9.10. I must say
this scaling issues *could* be at ubuntu/linux level since my XP runs
normally up to
I think that Windows XP doesn't use the EIST feature. Windows 7 does,
though, so I have this problem in Win7 and Ubuntu. I do realize this is
probably completely the wrong place for this discussion, but I am hoping
to get some info to use for leverage with Acer. Or perhaps enough info
from enough
Adding to this issue, I just finally got through to Acer Level 2 support
about this BIOS issue with the N280 CPU, and the tech completely
stonewalled on me. She said that it is absolutely not a known issue, and
that the CPU will run at 1.66GHz when it needs to. This is despite the
fact that in
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
Is Lenovo aware of this problem? I've seen some links here to topics in
their forums, but no statement from Lenovo.
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Don't know. I have Acer.
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On 22 Dec 2009, at 22:15, Geralt usr.gen...@gmail.com wrote:
Is Lenovo aware of this problem? I've seen some links here to topics
in
their forums, but no statement from Lenovo.
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Atom N280 frequency scaling not supported
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.
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 rka...@mail.ru 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
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
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).
I wonder why XP is different?
Most likely the reason is different power profiles (by default XP has
EIST off).
I reposted on this - XP actually behaves the same way as 7.
Win7 reports 1.33Ghz
CPUZ reports 1.66Ghz
So is this just a Win7 reporting bug?
I guess it's rather CPU-Z
Three updates
1. Bios 1.25 made no difference
2. My original Bios was 1.13 not 1.15
3. XP reports 1.31Ghz so it appears not to be 1.66
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Interesting
Win7 reports 1.33Ghz
CPUZ reports 1.66Ghz
So is this just a Win7 reporting bug?
** Attachment added: cpuz.png
http://launchpadlibrarian.net/36659170/cpuz.png
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I have an Acer AOD 205 BB18 (N280, 1280x720 screen, Win 7 preinstalled).
I get the same problem under Windows 7 - maximum speed is 1.33GHz
Bios is 1.15. Manufactured 0909.
Strangely, I know someone with an AOD 205 BW83 (N280, 1024x600 screen, XP
preinstalled).
Their machine doesn't have the
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
Just tried the link posted by rkagan #55.
Got my MSI Wind u100+ fixed.
Consider this issue solved for MSI Wind u100+ series. :)
Thanks rkagan and all.
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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
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=downloaddetailtype=biosmaincat_no=135prod_no=1784
I just updated my Acer D250 with the new BIOS version. There is no
difference in terms of performance or cpu scaling.
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I have upgraded to Karmic, so here's my SSDT2 table.
Besides, I found this forum discussing how to load custom SSDT tables for MacOS
X:
http://www.insanelymac.com/forum/index.php?showtopic=145792
Stupid Question: Is this a possible approach in Grub?
** Attachment added: SSDT2.dsl
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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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?)?
I did not install cpufreqd. If I echo ondemand
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor (from arch
Folks,
a new BIOS version for the D150 (BIOS_Acer_1.11_A_A.zip) came out at Nov 17th.
Anyone already made some tests?
It is only 917 Kb and the version is stated as 1.11 - so I am a bit afraid that
something went wrong at the
acer site
The size of the download is OK, as it only contains the three files for
the DOS install method and not the Windows executeable. It's a bit funny
that the version number is the same as the previous from 2009-09-21 yes.
I do not have the chance to test this right now, I will probably look
into it
Eh... Now by checking the date of the firmware file KAV10.fd, 2009-09-04
15:22 , and confirming by using md5sum, I see that it's the same file as
in the zip from 2009-09-21. So there's no new BIOS. I have BIOS version
1.11, and the state of things are as discussed troughout this tread.
--
Atom
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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You
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
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
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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Runar Ingebrigtsen wrote:
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
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
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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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.
** Attachment added: SSDT table Acer Aspire One D250
http://launchpadlibrarian.net/35593424/SSDT.dsl
--
Atom N280 frequency
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.
Same here on Lenovo S10-2 with Fedora 11.
On a related matter, all the included reports confirm another problem I
posted in http://forums.lenovo.com/t5/IdeaPad-S-series-Netbooks/s10-2
-no-NX-bit/td-p/174434.
Weird that N280-based machines from three different vendors exibit the
same behavior.
I've got an S10-2 with an N280 and also see the problem in 9.10. This
looks like a firmware bug of some sort. I wonder how windows works
around it though since apparently windows is unaffected (I can't confirm
this myself however). If that is the case, then wouldn't it be work-
aroundable in
i cant understand one thing
is CPU _really_ works in 1.33 Ghz, or it just displays 1.33, and the real freq
is 1.66???
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yes CPU really works at 1.33GHz.
What happens is this:
the operating system tries to save power by decreasing the processor
clock rate. For that, it determines which clock rates are available, and
selects the most appropriate one for the current load, according to the
policy chosen by the user.
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
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
@Runar,
Why is it that the kernel uses the BIOS here anyway? Determination of the CPU
speed shouldn't depend on such
a crappy architecture, at least from my perspective.
Unfortunately to pick up all the power management goodness, the information has
to be defined somewhere - this is what ACPI
Should have read: Thank Hewlett-Packard, Intel, Microsoft, Phoenix
Technologies and Toshiba for ACPI :-)
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I see, thank you for pointing out such obvious facts in a friendly
manner. ;)
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** Attachment added: Windows 7 performance screen shot
http://launchpadlibrarian.net/33976375/windows%20performance.jpg
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** Attachment added: Ubuntu 9.04 performance screen shot
http://launchpadlibrarian.net/33976553/linux%20speed.png
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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
Why is it that the kernel uses the BIOS here anyway? Determination of
the CPU speed shouldn't depend on such a crappy architecture, at least
from my perspective.
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I can contribute a screenshot from my Acer Aspire One D150 running Arch
Linux:
** Attachment added: E:\test\cpufreq-info.png
http://launchpadlibrarian.net/33983760/E%3A%5Ctest%5Ccpufreq-info.png
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Great to hear this Runar.
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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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The new BIOS for the Acer Aspire One D250 did appear, you can find it at
http://preview.tinyurl.com/yktestf
Still no luck with the frequency scaling issue, though. I'm following up
with Acer.
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Thanks for the feedback Runar, keep us informed of what Acer says about
this BIOS issue. Thank you!
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I just got word that my request will be forwarded to the technical
department of Acer Germany. Hopefully this means the engineers will
finally get involved and be able to take this issue further.
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Could you mention for them that this issue also applies to Acer Aspire
One D150?
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@Runar, any idea of when the new BIOS will be arriving - and keep us
posted if this fixing things. Thanks!
** Changed in: cpufreqd (Ubuntu)
Importance: Undecided = Medium
** Changed in: cpufreqd (Ubuntu)
Assignee: (unassigned) = Colin King (colin-king)
--
Atom N280 frequency scaling
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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Having exact same issue with Acer Aspire One D150 (Atom N280) with
latest BIOS 1.11 of 2009/09/21 (guess you have D250 as BIOS 1.15 was
released for that machine same day). Now this is with Arch Linux, so
it's probably offtopic OS too, but as this seems to be the only thread
on the net with any
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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btw ... the same issue with offtopic OS (win7), see attach
** Attachment added: Untitled.jpg
http://launchpadlibrarian.net/32743476/Untitled.jpg
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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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I've seen this problem on other N280 based systems - specifically, the
kernel is getting the incorrect CPU speed from the BIOS ACPI tables. To
test this hypothesis, try booting with the kernel boot option:
acpi=off
If you get the full 1.66GHz with this option it means that your BIOS is
reporting
Mobile Intel 945GSE Express - in tech spec
** Attachment added: data.html
http://launchpadlibrarian.net/32432557/data.html
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** Attachment added: dmesg
http://launchpadlibrarian.net/32432805/dmesg
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MSi Wind u100plus also shows 1,33Ghz when running Intel SpeedStep and 1,67Ghz
nor.
Real CPU works 1,67 only Ubuntu does not know about it. (especialy in Eco
mode(fn+f10))
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Could you update your chipset here? Notice that lshw might not report
the correct one. Please check your BIOS, booting message or spec.
** Changed in: cpufreqd (Ubuntu)
Status: New = Confirmed
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Here is my lshw output. The BIOS shows the same info.
** Attachment added: My lshw output (HTML)
http://launchpadlibrarian.net/32402646/lshw.html
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** Attachment added: BIOS screen shot.
http://launchpadlibrarian.net/32402680/P1020272.JPG
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exactly the same issue with N280, exept i have Lenovo S10-2 netbook
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and the same with ubuntu 9.10
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** Attachment added: dmesg.txt
http://launchpadlibrarian.net/3118/dmesg.txt
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** Attachment added: cpufreq-info.txt
http://launchpadlibrarian.net/31182204/cpufreq-info.txt
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** Attachment added: proc-cpuinfo.txt
http://launchpadlibrarian.net/31182281/proc-cpuinfo.txt
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** Attachment added: lsmod.txt
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