[Nouveau] [Bug 71351] New: xset dpms force off only works after suspend

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71351

          Priority: medium
            Bug ID: 71351
          Assignee: nouveau at lists.freedesktop.org
           Summary: xset dpms force off only works after suspend
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: davidesousa at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 88835
  --> https://bugs.freedesktop.org/attachment.cgi?id=88835&action=edit
dmesg before suspend

this is happenning on a macbook pro retina 2013 (11,3)

when trying to manually shut down the display, or when the screensaver does it,
the main display on the laptop only blanks the screen, but it doesn't shut down
the backlight, if there are external monitors connected, it doesn't even blank
the display.

after suspending and resuming the laptop, the command works, and also the
screensaver shuts down the display properly

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