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  1. Bug #1829620
  2. Comment #38

Comment 38 for bug 1829620

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Tyler Hicks (tyhicks) wrote : Re: [Bug 1829620] Re: intel-microcode on ASUS makes kernel stuck during loading initramfs on bionic-updates, bionic-security

On 2019-05-21 05:28:18, Mark wrote:
> > If that doesn't work, can you try to boot with 'mitigations=off'
> > passed on the kernel command line?
>
> on the other hand, mitigations=off did cut it!
> I guess now we're to find which of the mitigations is causing it? Do
> you have a hint? Which are all the params for turning kernel
> mitigations,please?

Oh, that is interesting.

On an Intel processor, mitigations=off is equivalent to these options:

 nopti
 nospectre_v2
 spectre_v2_user=off
 spec_store_bypass_disable=off
 l1tf=off
 mds=off

So, if you could cycle through those options individually to identify
which one allows you to boot, I think it would really help a lot in
getting better information to Intel.