Nouveau - Jun 2015 - [Bug 90999] New: xset dpms force off does not turn off LCD backlight

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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--- Comment #1 from freedesktop at jsab.me ---
Created attachment 116541
  --> https://bugs.freedesktop.org/attachment.cgi?id=116541&action=edit
/sys/kernel/debug/dri/0/vbios.rom

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--- Comment #2 from freedesktop at jsab.me ---
Workaround: using the nv driver

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

Martin Peres <martin.peres at free.fr> changed:

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

--- Comment #3 from Martin Peres <martin.peres at free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/197.

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