** Changed in: linux (Ubuntu)
Status: Incomplete = Invalid
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Title:
core i7 i5 (Lynnfield) turbo boost not working
To manage notifications
As noted earlier the original bug was confirmed fixed in 2.6.33
upstream. And the only activity here seems to be in kernel 2.6, so I
doubt anyone is still running into this issue.
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thgreasi, glad to hear it is fixed for you in Precise. Did you need a
backport to a prior release, or may we close this as Status Invalid?
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Title:
Actually I got then next version of ubuntu right 1 month after I
submitted this bug. I don't know if a backport of the patch ever got
released. Just close this bug with any type of status you think is
appropriate (I can't decide), since as noted in the comments, the
version of ubuntu this bug was
thgreasi, well the Status it will be toggled to is dependent on your
needs. If you need a backport to a supported release prior to Precise
(ex. Oneiric, Natty, Lucid, and Hardy Server), could you please
explicitly mention this? Otherwise, this report may be closed as Status
Invalid.
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apport information
** Tags added: apport-collected precise running-unity
** Description changed:
According to
http://www.phoronix.com/scan.php?page=articleitem=intel_p55num=4,
Intel core i7 and i5 (Lynnfield) processors do not work well with ubuntu
(both Ubuntu 9.04 and Ubuntu 9.10 Alpha
I think that, according to phoronix, this is fixed even before 12.04 (which i
currently use.)
If anyone can also confirm that, please change to fixed, as i`m not quite sure.
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thegreasi, thank you for reporting this and helping make Ubuntu better. Karmic
reached EOL on April 30, 2011.
Please see this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases
We were wondering if this is still an issue in a supported release? If
so, could you
** Changed in: linux
Importance: Unknown = Medium
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core i7 i5 (Lynnfield) turbo boost not working
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The bug subject for this is too generic, the issue was fixed in most
cases with the acpi patch.
You should open a seperate bug for your problem.
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I have a Dell Latitude E6410 with i7 processor (4x Intel(R) Core(TM) i7
CPU M 620 ). I am running Ubuntu 10.04.1 LTS, after reading above (and
also https://bugzilla.kernel.org/show_bug.cgi?id=15064 ) I updated the
kernel to Linux 2.6.35-020635rc1-generic (x86_64), I have a rather
strange
@Dan Weber
This bug was solved with a patch that fixed a broken acpi implementation in the
kernel. There can be many reasons why it might not work on your specific
hardware, but the original title of this bug report is far too broad.
Also please make sure your checking the right way, this will
Hi there Anders,
So I'm sure I'm checking the right way, but I'm not sure how to
alleviate the situation. I have an i7 720QM in my laptop. I run in
powertop it says I'm in turbo mode. I also check i7z and turbo stat.
When I'm running the latter two applications it never exceeds 1.6ghz
removed deprecated team assignment.
~JFo
** Changed in: linux (Ubuntu)
Assignee: Ubuntu Kernel ACPI Team (ubuntu-kernel-acpi) = (unassigned)
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I just purchased a hp dv6-2190us and loaded the latest ubuntu today
(Lucid). I also dist-upgraded to make sure i was running the latest
kernel. My laptop contains an i7 720qm, and turbo boost does not work
at all. I don't see how this bug is fixed at least for my laptop.
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I should point out that my i7 is a Clarksdale, not a Lynnfield.
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Updated to linux 2.6.33 but how do I check if I have turbo enabled? I
can't make i7z:
i7z.c:21:21: error: ncurses.h: No such file or directory
i7z.c: In function ‘main’:
i7z.c:233: warning: implicit declaration of function ‘initscr’
i7z.c:234: warning: implicit declaration of function
On my Dell Studio 1557 turbo boost now works as expected. Also idle
temperature is 5-10 °C lower than with Karmic.
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Hmm interesting.
On my i7-860 that tool is showing I'm getting turbo boost - but even for
something that only uses one cpu that
tool is showing all of the cores running at 2.933GHz rather than the normal
2.80GHz; I thought turboboost was
only supposed to raise one cores frequency? i7z-0.21.4
Hi Bacchus,
i have lucid running on my netbook since alpha2 without major problems, so i
decided to install it on my main notebook. I have had no isses so far - i'll
keep my fingers crossed ;-)
Thanks for your support here!
Cheers, dfriel
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Sorry for my late response - i made a fresh install of 10.04.
Here are my benchmark results (i7-Q820):
Blowfish 3.69
Cryptohash 299.91
Fibonacci 2.46
CPU N-Queens 0.84
FPU FFT 1.48
FPU Raytrace 5.61
Lucid rocks !
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dfriel, good to know that Lucid works for you but Lucid is still very broken.
If you need full functionality AND the performance benefits of 10.04, I would
recommend installing 9.10 then following the steps on #36. I have had several
headaches with 10.04.
Good Luck!
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I had another thought You could also D/L Ubuntu 10.04, burn to USB,
enable third party repo's, install hardinfo, benchmark and see what
results you get that way. When you create your live space for
storage, increase the default 128 MB to 512 or so. Otherwise the you
won't have enough space
CPU: core i5 750
MB: intel DP55WB
BIOS: WBIBX10J.86A.0251.2010.0302.2003 (03/02/2010)
OS: ubuntu 9.10 (karmic)
Kernel: 2.6.31-20-generic
gnome cpu scaling frequency applet reports 1.20GHz to 2.67GHz
i7z reports multiplier 9x to 23.96x
can i assume turbo boost is working for even a standard
Elsie wrote Bacchus said hardinfo CPU N-Queens is single threaded and
his result is 0.88s, but what i get is all 4 cores max out 100% @ 21x
with a result of 8.65s! any idea what's up?
Try this,
1) Shutdown compy, wait, turn-on computer.
2) Open hardinfo
3) Generate report
4) Post your results.
I failed to mention that everything should continue to work fine on your
old kernel even after installing the 2.6.32 until you rebuild your mods
into the new kernel. Take note of the hardinfo report on both of your
kernels.
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Bacchus wrote:
... Is there a reason why you are running Ubuntu 9.04?
I'm running 9.04 also because I have a big software compiled in it and I have
no time to re-install it. And I don't want to risk that after an upgrade it
doesn't work.
Ubuntu 9.04 support will end on April, then I will
Teox wrote:
...I'm running 9.04 also because I have a big software compiled in it and I
have no time to re-install it. And I don't want to risk that after an upgrade
it doesn't work.
I concur with your decision not to experiment with your kernel.
However, I would recommend a program called
Bacchus: Even if you are not affiliated with TeraByte, I object to your
advertising products here. This is a bug report for a specific kernel
issue, and not a forum for advertising. If you felt that this product
was applicable to Teox's comment, you could have sent your message
directly to him/her
Sorry about that... won't happen again... and I'm not affiliated with
any companies.
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-If you are using a windows 7 host, Ubuntu won't care about TB. Windows
7 will manage everything just fine. In fact, you could run good 'ol MS-
DOS 5.0 in VBox and turbo boost will work on in your VM.
-Here is an easy way to find out if turbo-boost is actually working (in
a real world
Teox wrote
Another question: if I install Ubuntu 9.04 directly (not as virtual machine),
could I harm my hardware, since it isn't patched? Or just turbo boost doesn't
work?
Thank you again
Lack of Turbo Boost on a native (bare-metal) ubuntu 9.04 or any other OS
will NOT harm you computer
Edit batter = battery
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Extension from comment #27 I'm about due for a re-build... Ubuntu 9.10
Here is a pretty step by step method Confirmed for Ubuntu 9.10 32 and
x86_64 versions.
***Warning, you will have broken modules after this upgrade, i.e. Virtual Box,
Nvidia drivers, BFCutter, etc...
Your
http://code.google.com/p/i7z/ should show it.
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Dear all,
how can i test if the turbo is working? I run the latest lucid kernel in
karmic and i do not see deep c-states in sudo powertop -d.
Are there any other tests?
Cheers!
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I have a notebook with i7-720qm and I use Ubuntu 9.04 (which is still
supported and updated): is this bug patched also there? Kernel version
is 2.6.28 line.
But if I use a bugged linux kernel version in VirtualBox as a guest
machine with hardware virtualization (using VT-x, nested paging or EPT,
The bug is patched in 10.04 but not Karmic/Jaunty, so you'll need to make
the jump or compile a new kernel yourself if you want to stay on
Karmic/Jaunty.
You should get full speeds (less virt overhead) on the Windows 7 host, as
Win7 will have already set the machine in a state allows TB.
Thanks,
Thank you for answering.
But if turbo boost is managed by Win7 host, I will use turbo boost also
in Ubuntu 9.04 guest machine running on Win7 host, even if 9.04 is still
bugged, right? And is this true also if I use hardware virtualization
(VT-x, nested paging or EPT, VPIDs or Virtual Processor
The latest ubuntu lucid kernels work.
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I'm about due for a rebuild of Ubuntu 9.10 on my HP DV-3085DX (i720). I will
re-assess the easiest method to get Turbo Boost up and running with Karmic and
post my results. (I only rebuild due to my frequent experimentation with
everything...) I have confirmed that Lucid 10.04 (32 and 64
Bacchus wrote on 2010-02-02: #20
...This has been patched into 2.6.32 and 2.6.33 (Confirmed by me for 32 and 64
bit)
When you say this has been patched into 2.6.32, are you referring to the
mainline kernel (now 2.6.32-9), the Ubuntu kernel in Lucid (now
2.6.32-15)?
If I am running the
I recommend going here.
http://www.nvnews.net/vbulletin/showthread.php?p=2159641 This page
will guide you through the process. I don't want to get too technical
and go off topic. This page is pretty step-by-step and the patch files
are posted for download. I will start another thread on
Also worth mentioning, ext4 performance has been suffering due to some
kernel regressions. (Especially in 2.6.32 and .33) Since the turbo boost
issues are predominant on mobile platforms and mobile platforms have a
battery, I thought it to be appropriate to include this link which will
give your
@Bacchus: Thanks for your posting on the workarounds. What patches for
NVIDIA do you recommend be applied?
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[WORK AROUND], [SOLVED], [NOT SOLVED]. ( I have inserted these flags due to
the frustration of users requesting Turbo Boost and the advantages of a 1.2
GHz increase in CPU speed.)
Work around # 1: (Masters) You can recompile your current kernel and include
this module here
Stupid keyboard...
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Worth mentioning that this is in 2.6.33, which wont be in karmic or
lucid, and it's a very simple fix (wrong assumption in the acpi code).
It should be atleast in lucid's kernel.
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** Changed in: linux
Status: Unknown = Fix Released
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There is a lot of confusion about turbo boost. /proc/cpuinfo will not report
correct freq (only reports non turbo frequencies)
Up to recently I thought my turbo boost was not working on my i7 laptop as
cpufreq reported max 1.6ghz. With the following util I found out that my
frequencies where up
http://code.google.com/p/i7z/
gave me some hight frequencies too (over the standard 2.8 GHz of my i7 860),
but i`m not quiet positive about its validity, since from time to time it gave
me frequencies like 7 GHz.
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http://bugzilla.kernel.org/show_bug.cgi?id=15064
Resolved upstream.
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** Also affects: linux via
http://bugzilla.kernel.org/show_bug.cgi?id=15064
Importance: Unknown
Status: Unknown
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** Changed in: linux (Ubuntu)
Assignee: (unassigned) = Ubuntu Kernel ACPI Team (ubuntu-kernel-acpi)
** Changed in: linux (Ubuntu)
Status: New = Confirmed
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same problem with a dell 1557 (i7 q720). frequencies go up only to
1.6ghz. windows 7 show correctly frequencies up to 2.6ghz.
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sorry, I forgot to say that I have also tested my processor with lucid
alpha 2 and I observed the same problem.
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Now posted here http://bugzilla.kernel.org/show_bug.cgi?id=15064
** Bug watch added: Linux Kernel Bug Tracker #15064
http://bugzilla.kernel.org/show_bug.cgi?id=15064
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http://code.google.com/p/i7z/issues/detail?id=1
Some discussion there trying to figure out, seems I dont enter C6 at
all.
I've also seen this mentioned a lot of places:
Turbo is enabled if cpufreq selects the (max+1) Mhz frequency
Checking scaling_available_frequencies I see this:
1597000
http://code.google.com/p/i7z/
On my m15x (laptop) with an i7 it says Turbo boost enabled, but when I
try to max out one cpu and look at it the multiplier does not go to full
speed, so I'm definitely not getting 100% out of it.
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my mobile i7 720 only show frequencies up to 1,6Mhz. I've tested it with
karmic and jaunty. when i try to switch from gnome to console or reboot
the machine, i get a message overheat of processer
the notebook is not realy hot, but the overheating message comes on
every shutdown or reboot.
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Just ran the test on core i7 920. It appears that Ubuntu runs fine under
the 920 Bloomfield series processor: bare-metal Ubuntu is slightly
faster than Ubuntu under VMware or VirtualBox on Windows 7:
VMware:
http://global.phoronix-test-suite.com/index.php?k=profileu=nikolay-6078-12767-16686
Hello nikolay,
Right, I have three i7 920 desktops on the X58 that all run fine with
TurboBoost.
It's my mobile i7's on the PM55 (720,820,920) that have given me
problems.
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I discovered this interesting article about Turbo Boost and operating
system support.
http://computing-intensive.blogspot.com/2009/09/how-to-make-turbo-boost-
work-under.html
It mainly says that, for an OS to support Turbo Boost:
1. The said OS must support ACPI
2. The BIOS in use must
Well, note that the Q9550 is not as fast as Ubuntu 9.1 under VirtualBox
on Windows 7 (the fifth column).
I have benchmarked a wide variety of calculations that I run on
Ubuntu/VirtualBox and the architecture is certainly faster for most
tasks even under virtualization - the issue is just that we
Michael,
I ran your phoronix test on my Core 2 Quad Q9550: http://global
.phoronix-test-suite.com/index.php?k=profileu=nikolay-16115-4413-8672
I just ordered my core i7 upgrade - i7 920 2.66GHz. I will post results
with it as soon as I get the parts and get my box upgraded.
The Core 2 Quad
... and here's the results from my ThinkPad T61 with Core(TM)2 Duo CPU
T7800 @ 2.60GHz, just for the sake of comparison and because PTS makes
it so easy to do this (kudos to Michael Larabel for giving us such a
great tool!):
http://global.phoronix-test-
I've had issues with both the HP dv6t and Alienware m15x.
Here are some logs with TurboBoost enabled and disabled.
http://www-personal.umich.edu/~mjbommar/m15x/
I've done some performance testing here:
http://global.phoronix-test-suite.com/index.php?k=profileu=mjbommar-10157-25021-1778
You can
I have an ASUS G51J laptop with a Core i7 720QM processor. I myself found that
the Turbo Boost is definitely not working.
I'm running Karmic Koala with the 2.6.31-15 Kernel.
From my experience, I found that the ACPI support might be broken. When
I COMPLETELY disable ACPI support through the
The i5 support seems to be a little behind, even on the latest from
Koala beta (which I went for having seen the same Phoronix article
explaining that the 2.6.31 Kernel was required for compatibility).
In addition to the Turbo Boosting not working, I have also found
performance to be on par or
** Package changed: ubuntu = linux (Ubuntu)
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