[Nouveau] [Bug 88272] New: [NVAC] Flickering screen on 1920x1080 monitor with 9400M in MacbookPro 5, 5

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88272

            Bug ID: 88272
           Summary: [NVAC] Flickering screen on 1920x1080 monitor with
                    9400M in MacbookPro 5,5
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: nils at famalex.de
        QA Contact: xorg-team at lists.x.org

Created attachment 112063
  --> https://bugs.freedesktop.org/attachment.cgi?id=112063&action=edit
dmesg without drm.debug

I'm using nouveau from the git kernel to drive the GeForce 9400M, the only
graphics adapter in my MacbookPro 5,5.

My Dell U2312HM monitor (1920x1080 at 60, attached via DisplayPort -> DisplayPort
cable) won't show a static picture, moving pictures make the flickering even
worse. The problem still stands in the highest pstate level and with only the
DisplayPort as active output. I also tried a DisplayPort -> VGA adapter and got
the same result.

Included two dmesg:

1) Without drm.debug
2) With drm.debug=0xf, flooded

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