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Date:   Thu, 11 Jun 2020 18:17:58 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Mario.Limonciello@dell.com
Cc:     pmenzel@molgen.mpg.de, tglx@linutronix.de, mingo@redhat.com,
        x86@kernel.org, linux-kernel@vger.kernel.org, hdegoede@redhat.com,
        ckellner@redhat.com, linux-pm@vger.kernel.org
Subject: Re: Intel laptop: Starting with `maxcpus=1` and then bringing other
 CPUs online freezes system
Message-ID: <20200611161758.GG30352@zn.tnic>
References: <125e904a-088e-f111-00a4-95c3b18d882f@molgen.mpg.de>
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On Thu, Jun 11, 2020 at 01:13:27PM +0000, Mario.Limonciello@dell.com wrote:
> From some other similar reports I've heard this could be related to the ucode
> loading causing a freeze.  I would suggest trying to disable the Intel ucode
> loader with the initramfs as a debugging tactic.

There's a cmdline param for that: "dis_ucode_ldr".

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette