[Bug 106597] [vga_switcheroo] commit 07f4f97d7b4bf325d9f558c5b58230387e4e57e0 breaks dpm on Alienware 15R3 - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 106597] [vga_switcheroo] commit 07f4f97d7b4bf325d9f558c5b58230387e4e57e0 breaks dpm on Alienware 15R3
Date: Wed, 23 May 2018 06:54:51 +0000	[thread overview]
Message-ID: <bug-106597-502-iSDFRT2tWH@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-106597-502@http.bugs.freedesktop.org/>

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https://bugs.freedesktop.org/show_bug.cgi?id=106597

--- Comment #16 from Lukas Wunner <lukas@wunner.de> ---
Created attachment 139688
  --> https://bugs.freedesktop.org/attachment.cgi?id=139688&action=edit
drm-next-4.18-wip debug patch 1

So, the HDA device's usage counter is 0, it has no active children and runtime
PM is allowed. Still, it's runtime active. Why is it not suspending? Here's a
little patch which litters relevant code with debug printks, hopefully this
will get us closer to the answer. Could you apply this on top of
drm-next-4.18-wip and attach the resulting dmesg output?

Oh and could you also try:
cat /sys/bus/pci/devices/0000:01:00.1/power/runtime_status
... to double check that runtime PM is enabled?

Thanks!

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