Comment # 51 on bug 1185513 from Anthony Agelastos

(In reply to Anthony Agelastos from comment #50)
> (In reply to Joey Lee from comment #48)
> > (In reply to Anthony Agelastos from comment #46)
> > > (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. 
> > > 
> > 
> > Normally I just download the kernel-default RPM and use 'rpm -ivh' command
> > to install it on my machine. e.g.
> > 
> > # rpm -ivh kernel-default-5.12.6-1.1.g15ed7b8.x86_64.rpm
> > 
> > Then reboot system, you should see a boot item on grub2 menu. e.g.
> > 
> >    openSUSE Tumbleweed, with Linux 5.12.6-1.g15ed7b8-default
> > 
> > Then select it for booting test.
> > 
> > Let's test and confirm the 719e1f561afbe patch is the root cause. Then we
> > ping upstream experts.
> 
> Greetings:
> 
> I installed the kernel and attached its dmesg output to this ticket. I was
> not able to boot the system graphically (it stopped at the console login). I
> didn't see any of the errors we saw before (but please double check me).
> This seems to indicate that you have correctly identified the problem.
> Please let me know if you have any questions, comments, or concerns.
> Additionally, please let me know how to proceed once you discuss things with
> upstream. Thank you for your help with this. 
> 
> Kind regards,
> Anthony

I forgot to mention... the updated dmesg is within comment#49.