[Nouveau] [Bug 90999] New: xset dpms force off does not turn off LCD backlight

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90999

            Bug ID: 90999
           Summary: xset dpms force off does not turn off LCD backlight
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: freedesktop at jsab.me
        QA Contact: xorg-team at lists.x.org

Created attachment 116540
  --> https://bugs.freedesktop.org/attachment.cgi?id=116540&action=edit
Output of dmesg (see detail in description)

'xset dpms force off' turns the screen blank but the LCD backlight remains on.

Linux kernel 4.0.5 running on a MacbookPro 11,3.

dmesg.txt attached from running kernel with
'nouveau.debug=VBIOS=trace,I2C=debug,DISP=debug,DRM=debug drm.debug=0xe' and
should contain output generated from running xset dpms force off at the end of
file.

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