[Bug 106957] GPU runtime suspend broken since 4.17

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106957

--- Comment #5 from Lukas Wunner <lukas at wunner.de> ---
Okay the HDA's runtime ref counter is 0 and it has no active children, so it
should suspend. Chances are it doesn't because rpm_idle() fails for some
reason.

Could you try this debug patch that I had created for #106597 and post the
dmesg output?

https://bugs.freedesktop.org/attachment.cgi?id=139706&action=edit

You can add "log_buf_len=10M ignore_loglevel" to the command line to ensure
that dmesg isn't truncated and contains all debug output.

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