Unfortunately, the new Microcode did not fix the overclocking issue on
an i7-6850k on an Asus X99A board. Before and After of /proc/cpuinfo are
attacked as files.
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On Fri, 28 Sep 2018, Henrique de Moraes Holschuh wrote:
> Date: Fri, 28 Sep 2018 17:12:55 -0000
> From: Henrique de Moraes Holschuh <1748...@bugs.launchpad.net>
> To: nan...@eskimo.com
> Subject: [Bug 1748543] Re: intel-microcode when installed on an i7-6850k based
> system running Artful breaks overclock
>
>> From reports elsewhere in the Internet, made by Microsoft Windows users
> with KB4100347 installed. Behavior in Linux might be slightly different.
>
> * Several motherboard vendors affected (at least ASUS, EVGA);
> * Motherboards based on X99 with overclocking features available through
> vendor UEFI/BIOS;
> * RAM and uncore overclocking not affected by this issue (overclocked values
> are preserved);
> * CPU voltage not affected (changed voltage set points are preserved).
>
> Processors reported as affected:
> Intel 6800k, 5930k, 6900k, 6950x, Xeon (no data about xeon models, assume
> socket-compatible with X99 chipset).
>
> Reports imply the microcode update itself is the problem, not the
> updated microcode: Motherboards whose UEFI/BIOS already has the latest
> microcode revision are *not* affected by this issue, and overclock as
> expected.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1748543
>
> Title:
> intel-microcode when installed on an i7-6850k based system running
> Artful breaks overclock
>
> Status in intel-microcode package in Ubuntu:
> New
>
> Bug description:
> I have an I7-6850k machine Asus X99-A motherboard, 128GB memory with
> Artful 17.10 installed. The official clock speed of this processor is
> 3.6 Ghz, I have it clocked at 4.3 Ghz, however, if I install the
> intel-microcode package, the machine ignores the BIOS settings and
> reverts to 3.6 Ghz. Since this package is necessary from a security
> perspective I'm stuck with either being insecure or losing an enormous
> amount of performance.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 17.10
> Package: intel-microcode (not installed)
> ProcVersionSignature: Ubuntu 4.13.0-32.35-lowlatency 4.13.13
> Uname: Linux 4.13.0-32-lowlatency x86_64
> ApportVersion: 2.20.7-0ubuntu3.7
> Architecture: amd64
> CurrentDesktop: MATE
> Date: Fri Feb 9 13:04:14 2018
> InstallationDate: Installed on 2017-05-05 (280 days ago)
> InstallationMedia: Ubuntu-MATE 17.04 "Zesty Zapus" - Release amd64 (20170412)
> SourcePackage: intel-microcode
> UpgradeStatus: Upgraded to artful on 2017-10-20 (112 days ago)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1748543/+subscriptions
>
** Attachment added: "cpuinfo.before"
https://bugs.launchpad.net/bugs/1748543/+attachment/5194659/+files/cpuinfo.before
** Attachment added: "cpuinfo.after"
https://bugs.launchpad.net/bugs/1748543/+attachment/5194660/+files/cpuinfo.after
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1748543
Title:
intel-microcode when installed on an i7-6850k based system running
Artful breaks overclock
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1748543/+subscriptions
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