[Bug 86503] New: Discrete card seems to be powered on even if reported as Off

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=86503

            Bug ID: 86503
           Summary: Discrete card seems to be powered on even if reported
                    as Off
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: mszpak-5tc4TXWwyLM@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Following up Bug 70895.

On Fedora 21 with 3.17.3-300.fc21.x86_64 when booting with nouveau.runpm=0 I
have both cards on:
$ $ sudo cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Pwr:0000:01:00.0

and after:
# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

I have:
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Off:0000:01:00.0

Looks ok, but I still see 3 providers:
$ xrandr --listproviders
Providers: number : 3
Provider 0: id: 0x90 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs:
3 outputs: 5 associated providers: 2 name:Intel
Provider 1: id: 0x63 cap: 0x7, Source Output, Sink Output, Source Offload
crtcs: 2 outputs: 2 associated providers: 2 name:nouveau
Provider 2: id: 0x63 cap: 0x7, Source Output, Sink Output, Source Offload
crtcs: 2 outputs: 2 associated providers: 2 name:nouveau

and system temperature could suggest that the card is still on.

When I use (on the second kernel) bbswitch with bumblebee I see only one
provider and the temperature is a few (~6) degrees lower.

I see no messages from VGA switcheroo in the system log (as there were in
3.11.6). Can I make output more verbose or do something else to provide more
details about the situation?


System specification:
Asus N43SN
GeForce GT 550M + integrated Intel card using i915 driver (NVidia Optimus)
kernel-3.17.3-300.fc21.x86_64
xorg-x11-drv-nouveau-1.0.11-1.fc21.x86_64
xorg-x11-server-Xorg-1.16.1-1.fc21.x86_64

Btw, on that system there is also problem with auto-suspending (with not
disabled nouveau.runpm) - a card is always in DynPwr - Bug 70875.

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