[Bug 98398] [Nouveau] Vgaswitcharoo fails to turn off GPU properly

[Bug 98398] [Nouveau] Vgaswitcharoo fails to turn off GPU properly

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https://bugs.freedesktop.org/show_bug.cgi?id=98398

            Bug ID: 98398
           Summary: [Nouveau] Vgaswitcharoo fails to turn off GPU properly
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/other
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: rick.2889@gmail.com

Created attachment 127483
  --> https://bugs.freedesktop.org/attachment.cgi?id=127483&action=edit
dmesg output

Using Arch Linux and kernel 4.8.3, I am observing much higher power usage in
powertop when using Nouveau with vgaswitcharoo (~13W) opposed to
NVIDIA/Bumblebee with BBSwitch (~7.5 W).

I initially started noticing this because the battery drained much faster and
the fans started to spin while they otherwise stayed idle.

Attached is my dmesg log.

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[Bug 98398] [Nouveau] Vgaswitcharoo fails to turn off GPU properly

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98398

--- Comment #1 from rick.2889@gmail.com ---
Created attachment 127484
  --> https://bugs.freedesktop.org/attachment.cgi?id=127484&action=edit
acpidump output

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[Bug 98398] [Nouveau] Vgaswitcharoo fails to turn off GPU properly

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98398

--- Comment #2 from rick.2889@gmail.com ---
Created attachment 127485
  --> https://bugs.freedesktop.org/attachment.cgi?id=127485&action=edit
lspci -tnnv output

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[Bug 98398] [Nouveau] Vgaswitcharoo fails to turn off GPU properly

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https://bugs.freedesktop.org/show_bug.cgi?id=98398

Ilia Mirkin <imirkin@alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         QA Contact|                            |xorg-team@lists.x.org
          Component|DRM/other                   |Driver/nouveau
            Version|XOrg git                    |unspecified
            Product|DRI                         |xorg
           Assignee|dri-devel@lists.freedesktop |nouveau@lists.freedesktop.o
                   |.org                        |rg

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