[Bug 61114] New: On system boot both DIS and IGD cards are powered on.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61114

          Priority: medium
            Bug ID: 61114
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: On system boot both DIS and IGD cards are powered on.
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: william at firstyear.id.au
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

On system boot from kernels post 3.6, both the discrete radeon and integrated
intel card are powered on.

This creates confusion in Xorg since it believes there are two displays - It
creates a smaller box on the top left of screen as it attempts to use both. It
can cause kernel panics during suspend resume.

cat /sys/kernel/debug/vgaswitcheroo/switch 
0:IGD: :Pwr:0000:00:02.0
1:DIS:+:Pwr:0000:01:00.0
2:DIS-Audio:+:Pwr:0000:01:00.1


Should be

cat /sys/kernel/debug/vgaswitcheroo/switch 
0:IGD: :Off:0000:00:02.0
1:DIS:+:Pwr:0000:01:00.0
2:DIS-Audio:+:Pwr:0000:01:00.1

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI
Whistler XT [AMD Radeon HD 6700M Series]

The system is an apple macbook pro 8,2 with gmux using EFI.

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