# Kernel 5.8.1 now on Stable

**URL:** <https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952>\
**Category:** Lounge\
**Created:** [August 15, 2020, 4:29am UTC](https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952 "2020-08-15T04:29:55Z")\
**Posts on this page:** 5\
**Page:** 3

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**Author:** ![Stephane](https://forum.endeavouros.com/user_avatar/forum.endeavouros.com/stephane/32/9196_2.png) [@Stephane](https://forum.endeavouros.com/u/Stephane)\
**Post date:** [August 24, 2020, 8:26am UTC](https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952/41 "2020-08-24T08:26:13Z")

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we have also a report

> **[Kernel 5.8.x my system seems to be only running at it’s minimum clock of 800mhz](https://forum.manjaro.org/t/kernel-5-8-x-my-system-seems-to-be-only-running-at-it-s-minimum-clock-of-800mhz/2919/5)**
>
> The system was significantly slower than usual even when logging in or starting applications. After a while of wondering what was going on, I looked at conky and noticed that it was stuck at 800mhz, which would not change. Output of inxi MCxxa...

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**Author:** ![Schlaefer](https://forum.endeavouros.com/user_avatar/forum.endeavouros.com/schlaefer/32/11917_2.png) [@Schlaefer](https://forum.endeavouros.com/u/Schlaefer)\
**Post date:** [August 24, 2020, 8:44am UTC](https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952/42 "2020-08-24T08:44:38Z")

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> [@Stephane](#):
>
> we have also a report

Interesting. I have a Kaby Lake i5-8250U laptop on manjaro latest stable with 5.8.1 and everything is fine (powersave & performance, no throttling on powersave). And as I said, I’m 99.9% sure the desktop (EOS) was fine on 5.8.1 and 5.8.2, here it started with 5.8.3.

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**Author:** ![keybreak](https://forum.endeavouros.com/user_avatar/forum.endeavouros.com/keybreak/32/9257_2.png) [@keybreak](https://forum.endeavouros.com/u/keybreak)\
**Post date:** [August 24, 2020, 8:47am UTC](https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952/43 "2020-08-24T08:47:28Z")

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Biggest Kernel release…  
Kinda what i expected, biggest amount of problems 😅

KISS Tux 🐧, KISS 💏

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**Author:** ![Schlaefer](https://forum.endeavouros.com/user_avatar/forum.endeavouros.com/schlaefer/32/11917_2.png) [@Schlaefer](https://forum.endeavouros.com/u/Schlaefer)\
**Post date:** [August 24, 2020, 11:11am UTC](https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952/44 "2020-08-24T11:11:15Z")

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OK, from my limited understanding looking at the code - and this is the first C code I tried to read in 20 years: [1] changes the intel\_pstate driver so that everything before Broadwell isn’t running `intel_pstate` but `intel_cpufreq`.

The good news: there’s an undocumented `intel_pstate=active` which brings back `intel_pstate`.

PS: There’s also heavy refactoring going on for 5.9 which seems to affect Broadwell and older. [edit] There it also documents the new behavior (“optional”) [2]:

> **Active Mode Without HWP**  
> This operation mode is optional for processors that do not support the HWP feature or when the `intel_pstate=no_hwp` argument is passed to the kernel in the command line. The active mode is used in those cases if the `intel_pstate=active` argument is passed to the kernel in the command line.

HWP is supported in Skylake and later.

[1] [https://github.com/torvalds/linux/commit/39a188b88332545073b8e07633f5e3298e066b61](https://github.com/torvalds/linux/commit/39a188b88332545073b8e07633f5e3298e066b61)  
[2] [https://github.com/torvalds/linux/blob/master/Documentation/admin-guide/pm/intel\_pstate.rst#active-mode-without-hwp](https://github.com/torvalds/linux/blob/master/Documentation/admin-guide/pm/intel_pstate.rst#active-mode-without-hwp)

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<div class="post-metadata">

**Author:** ![Schlaefer](https://forum.endeavouros.com/user_avatar/forum.endeavouros.com/schlaefer/32/11917_2.png) [@Schlaefer](https://forum.endeavouros.com/u/Schlaefer)\
**Post date:** [August 28, 2020, 5:21pm UTC](https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952/45 "2020-08-28T17:21:44Z")

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5.8.4 is in the repo!

5.8.5: Hold my beer …

[Previous page](https://forum.endeavouros.com/t/kernel-5-8-1-now-on-stable/6952.md?page=2)
