[Bug 176411] cpufreq/cpuinfo_cur_freq reports <unknown>, MSI X99A SLI PLUS i7-5820K, MSI i7-5930K, MSI X99A Raider i7-5820K

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=176411

--- Comment #35 from Mike Lui (mike.d.lui@gmail.com) ---
(In reply to Len Brown from comment #30)
> Mike Lui : 
> 
>   - disabled on-board OC'ing
>   - disabled intel c-states
>   - enabled turbo-boost
> 
>     After this the issues in comment #1 are no longer present.
> 
> @ Mike Lui
>     Can you verify that there is no problem when you use SETUP DEFAULTs?
>     or at least return C-states to their default ENABLED setting)

I got caught up with work recently and just reviewed the comments, since my
last comment.
The problem appears to be fixed, for me. Unfortunately (or fortunately), the
solution was a simple UEFI BIOS update. This points to a problem in the
firmware, for my situation, which explains the intermittent nature of the
problem.

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