The upstream kernel did not fix the issue. Yet, cpufreq behaves
differently now (my guess: different/missing kernel modules):
cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
driver:
After two hours of getting my GPU driver to work again due to installing
and deinstalling mainline kernel package ...
Cause of problem found:
cpufreqd
If this package is not installed frequency scaling works - out of the
box.
Solution: Bann cpufreqd from repositories.
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You received this bug
** Tags removed: bios-outdated-2.90
** Tags added: latest-bios-2.90
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https://bugs.launchpad.net/bugs/1390902
Title:
[Z77 Extreme4] scaling_min_freq wrong on my Intel CPU
ahb, the issue you are reporting is an upstream one. Could you please
report this problem to the appropriate mailing list (linux-pm) by
following the instructions _verbatim_ at
https://wiki.ubuntu.com/Bugs/Upstream/kernel ?
Please provide a direct URL to your e-mail to the mailing list once you
ahb, given the new information you provided, please ignore the request
to file this upstream. For now, let this be assigned to the cpufreqd
package for the specialist on that to review.
As well, would you be able to provide more information on your use of
cpufreqd (was it installed by default,
I will try a BIOS upgrade on this machine later on.
However, I doubt it will change anything since I have to totally different
machines exhibiting the same problem (and it worked on the machine above an
12.04.5):
Machine 1: Lenovo X230 Laptop
Machine 2: Different desktop computer
Information
ahb, just to clarify, this report is only scoped to the Z77 Extrem4 hardware,
not any other. If you are having a problem with different hardware, please file
a new report, one per hardware combination, via a terminal:
ubuntu-bug linux
As well, please do not tar or compress files as it makes it
I'll comply to Ubuntu's bug procedure(s).
Yet, I think it is important from a developers point of view to know from the
start that this issue is not related to a specify HW, but rather a more general
problem (i.e. at least concerning the Z77 desktop, the X230 laptop and the Z87
desktop).
Bug persists after BIOS update:
sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date
P2.90
07/11/2013
cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
ahb, could you please test the latest upstream kernel available from the
very top line at the top of the page (the release names are irrelevant
for testing in your release) following
https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional
upstream developers to examine the issue.
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