[Nouveau] [Bug 74815] New: nouveau: no displayport output on quadro 400/600 cards

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74815

          Priority: medium
            Bug ID: 74815
          Assignee: nouveau at lists.freedesktop.org
           Summary: nouveau: no displayport output on quadro 400/600 cards
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mgulick at mathworks.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Driver/nouveau
           Product: xorg

Created attachment 93816
  --> https://bugs.freedesktop.org/attachment.cgi?id=93816&action=edit
boot log from 3.14-rc2 with nouveau.debug=PDISP=debug,VBIOS=trace

Using dual monitors, one on DVI and one on Displayport, the displayport output
is blank.  The monitor will not come out of sleep mode.  xrandr reports both
displays and indicates both displays are active.  Have tried disabling/enabling
outputs, and changing orientation.

Tested against kernels:
3.8.13 - works ok on both outputs
3.9.11 - no DP output
3.10.26 - no DP output
3.14-rc2 - no DP output

Tested against following cards:
Quadro 400 (GT216GL) - no DP output
Quadro 600 (GF108FL) - no DP output
Quadro K600 (GK107) - both outputs fine

OS is stock Debian Wheezy 7.2 with updated kernel.

Attached boot log from 3.14-rc2 with 'nouveau.debug=PDISP=debug,VBIOS=trace'

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