Comment # 5 on bug 1187510 from David Walker

(In reply to Takashi Iwai from comment #4)
> OK, then could you check the kernel in my OBS repo, e.g.
> home:tiwai:kernel:5.10, home:tiwai:kernel:5.11, etc?

Here's what I've tested...

kernel-default-5.9.14-1.1.gc648a46 from
https://download.opensuse.org/repositories/home:/tiwai:/kernel:/5.9/ARM/
kernel-default-5.10.16-1.1.g11381f3 from
https://download.opensuse.org/repositories/home:/tiwai:/kernel:/5.10/ARM/
kernel-default-5.11.16-1.1.ge06d321 from
https://download.opensuse.org/repositories/home:/tiwai:/kernel:/5.11/ARM/

 - I didn't experience an unresponsive display with any of these. I did,
   however, notice the following:
    - GDM runs at 100% CPU (of one CPU), although I believe I saw this
      not happen once under 5.9, but I haven't reproduced it.
    - In addition to the log records I mentioned earlier, I also get
      "gnome-shell[4193]: glamor: 'wl_drm' not supported" often (which,
      of course, may be unrelated).

kernel-default-5.12.9-1.1.aarch64 and kernel-default-5.12.10-1.1.aarch64

 - These are the kernels that were installed (and not cleaned up) via
   "zypper dup".
 - In addition to the symptoms from 5.9-5.11, I also get the "unresponsive
   display" problem.

I'm currently running kernel-default-5.11.16-1.1.ge06d321. Let me know
how else I can help.