[Bug 77106] New: Blank screen and errors on Thinkpad T440p GeForce 730M/Intel optimus setup

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

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https://bugs.freedesktop.org/show_bug.cgi?id=77106

          Priority: medium
            Bug ID: 77106
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: Blank screen and errors on Thinkpad T440p GeForce
                    730M/Intel optimus setup
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mkj-1kv+JzgSdXk@public.gmane.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

My setup is Gentoo +:
kernel 3.14, Mesa 10.4.0, xserver 1.15, libdrm 2.4.52, nouveau 1.0.10

Normally my machine works using the Intel HD graphics only, but I wanted to
experiment with nvidia/nouveau drivers.
Using the proprietary Nvidia driver, and kernel 3.13, I managed to make a
xorg.conf file that "disabled" the Intel card and only the Nvidia card
primarily for 2D/3D. 
Using the same xorg.conf, and the 3.14 kernel, I replaced the nvidia driver
with nouveau, and I end up with a blank screen and some weird errors in my
dmesg.

Any ideas?

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