Comment # 46 on bug 1185513 from Anthony Agelastos

(In reply to Joey Lee from comment #45)
> Hi Anthony and anyone's system has the same symptom:
> 
> I have reverted the 719e1f561afbe patch and built a kernel rpm in my home
> branch on OBS. Could you please try it?
> 
> https://build.opensuse.org/package/binaries/home:joeyli:branches:openSUSE:
> Factory:bsc1185513/kernel-default/standard
> 
> Please install this kernel rpm but still keep the old kernel in case there
> have any unknown problem.
> 
> And, please note that this is not a real solution. I will raise this issue
> on upstream after we confirmed that the 719e1f561afbe patch is root cause.
> Reverting 719e1f561afbe patch will cause that we may lost some USB4
> functions.
> 
> On the other hand, kernel upstream may treats this problem as a firmware
> issue. We didn't see this ACPI error message that's because v5.11 kernel
> doesn't follow ACPI spec's recommended behavior.

Hello Joey:

Thank you for your help with this. I'm glad you were able to drill down to the
root cause. Could you (or anyone familiar with this) walk me through the steps
for how to install your kernel to test and then to revert the changes
afterwards? One method could be manual whilst another could leverage Snapper
and do it through snapshots. I am new enough to openSUSE that I don't have
enough experience with either of those methods to know precisely how to. So,
any guidance would be appreciated. Thank you for your help with this. 

Kind regards,
Anthony