Comment # 13 on bug 1183872 from Imnotgivingmy nametoamachine

(In reply to Takashi Iwai from comment #12)
> (In reply to Imnotgivingmy nametoamachine from comment #11)
> > (In reply to Takashi Iwai from comment #10)
> > > It's being rebuilt now.  I didn't notice that the automatic update stopped
> > > working...
> > 
> > Thank you very much Takashi! I tested with (drm-tip)
> > kernel-vanilla-5.12.rc4-2.1.ga3c6ee1 but sadly the bug was still present.
> > 
> > I then went ahead and tested with kernel-vanilla-5.12.rc5-1.1.g5fe2d5c
> > because I notice it was available too, you know just to make sure the bug
> > was indeed still present and all... But the bug doesn't happen with
> > 5.12.rc5-vanilla...
> > 
> > Just what the fuck? Was the bug really fixed in exactly the week I reported
> > the bug but without finding an useful log or call trace? And why the bug
> > didn't happened on ubuntu? To be honest despite the bug looking like it's
> > fixed on 5.12.rc5 it's now more annoying not knowing why or how it was fixed
> > haha
> > 
> > I'm legit going to read all the commits between 5.12.rc4 and 5.12.rc5
> > 
> > That aside what should the status of this bug be? Is it "Resolved" as soon
> > as there is a patch coming up in a future stable version or it's Resolved
> > until that patch finally reaches a stable kernel in opensuse?
> 
> You need to really make sure that it's fixed in 5.12-rc5 code itself.
> For example, 5.12-rc5 kernel you've tested also contains the kernel
> configuration change to make CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM=n.
> This might be the cause, too.
> 
> And, if that's the case, you could work around in other kernels by passing
>   snd_hda_codec_hdmi.enable_silent_stream=0
> boot option, too.

This might be the issue

(affected by this bug) config-5.11.6-1-vanilla:
>CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM=y

(affected by this bug) config-5.12.0-rc4-2.ga3c6ee1-vanilla:
>CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM=y

(drm-tip, affected by this bug) config-5.12.0-rc4-3.ge9c25f7-vanilla:
>CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM=y

All kernels build by ubuntu (none affected):
># CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM is not set

(not affected) config-5.12.0-rc5-1.g5fe2d5c-vanilla:
># CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM is not set

5.12.0-rc4-2.ga3c6ee1-vanilla booted with
snd_hda_codec_hdmi.enable_silent_stream=0 results in the gpu freeze to never
happen

Also from
https://cateee.net/lkddb/web-lkddb/SND_HDA_INTEL_HDMI_SILENT_STREAM.html
>found in Linux kernels: 5.9���������5.11, 5.12-rc+HEAD
5.9 was the first kernel I had issues when testing with the kernels in your
repo.

Looks like silent_stream is indeed the issue, how did you find it?