Nouveau - Apr 2014 - [Bug 77106] New: Blank screen and errors on Thinkpad T440p GeForce 730M/Intel optimus setup

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

          Priority: medium
            Bug ID: 77106
          Assignee: nouveau at lists.freedesktop.org
           Summary: Blank screen and errors on Thinkpad T440p GeForce
                    730M/Intel optimus setup
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mkj at gotu.dk
          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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--- Comment #1 from Martin J?rgensen <mkj at gotu.dk> ---
Created attachment 96984
  --> https://bugs.freedesktop.org/attachment.cgi?id=96984&action=edit
dmesg

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--- Comment #2 from Martin J?rgensen <mkj at gotu.dk> ---
Created attachment 96985
  --> https://bugs.freedesktop.org/attachment.cgi?id=96985&action=edit
xorg log using nouveau

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--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Can you try it with 3.15.x and Mesa 10.2.2 or later?

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Martin Jørgensen <mkj at gotu.dk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from Martin Jørgensen <mkj at gotu.dk> ---
the laptop is not in my possession anymore, so i'm closing the bug.
also, reading up on the subject it seems that some t440p laptops has issues
after a bios upgrade.
https://github.com/Bumblebee-Project/bbswitch/issues/78

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