[Bug 109513] [CI][BAT] igt at pm_rpm@module-reload - dmesg-warn - Use count on domain AUDIO is already zero

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109513

--- Comment #16 from Arek Hiler <arkadiusz.hiler at intel.com> ---
(In reply to Amadeusz Sławiński from comment #15)
> Hi,
> 
> First of all, as I understand CI is not testing audio per se, but can you
> consider adding
> snd_hda_core.dyndbg="+pfl" snd_soc_hdac_hdmi.dyndbg="+pfl"
> for debugging HDMI Audio functionality to kernel parameters?
> It will give more useful logs from audio side.

Hey Amadeusz,

First we would have to see how much noise it would cause using some pre-merge
testing. That would require us to send a kernel "HAX" patches that force those
options on kernel side to intel-gfx at lists.freedesktop.org. Then, if it's not
causing too much havoc, we can enable it for some of the offending machines to
gather more data over time.

If you can cook up such patch and send it - that would be appreciated.

> Can you tell me what exactly is being tested in this test?

Test:
https://gitlab.freedesktop.org/drm/igt-gpu-tools/blob/master/tests/i915/i915_pm_rpm.c#L2101
Preparing the environment:
https://gitlab.freedesktop.org/drm/igt-gpu-tools/blob/master/tests/i915/i915_pm_rpm.c#L740

It reloads i915 with display disabled, waits for the graphics to enter d3,
reloads again with display enabled, waits for d3 again, enables one screen and
then unloads the driver altogether.

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