Hello. looks like i found a workaround.
The nvidia GPU can be in different states - D3cold, D0, D3hot.
I randomly noticed, that if I keep the nvidia GPU in D0 state (just by
opening the nvidia-settings panel on the PowerMizer tab) -
freezes/stutters gone.
But if i let the nvidia GPU go into sleep mode (D3cold state) - freezes apperas
every 2 min.
And syslog spammed by:
...
Feb 17 15:55:17 smarttop kernel: [ 9145.605086] nvidia 0000:01:00.0:
Enabling HDA controller
Feb 17 15:57:17 smarttop kernel: [ 9265.612997] nvidia 0000:01:00.0:
Enabling HDA controller
Feb 17 15:58:58 smarttop kernel: [ 9366.357103] nvidia 0000:01:00.0:
Enabling HDA controller
...
So it looks like the freezes are due to the nvidia HDA controller.
** Bug watch added: gitlab.freedesktop.org/drm/amd/-/issues #3211
https://gitlab.freedesktop.org/drm/amd/-/issues/3211
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https://bugs.launchpad.net/bugs/2002206
Title:
Periodic freezing after unplugging USB-C monitor - "Enabling HDA
controller" in dmesg
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