[Bug 85459] New: DPMS not working on Dell M4800 / QHD+

[Bug 85459] New: DPMS not working on Dell M4800 / QHD+

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https://bugs.freedesktop.org/show_bug.cgi?id=85459

            Bug ID: 85459
           Summary: DPMS not working on Dell M4800 / QHD+
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: freedesktop-aVMt7ygKTj2t/hvpvFFPbQ@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 108419
  --> https://bugs.freedesktop.org/attachment.cgi?id=108419&action=edit
Xorg.0.log

X screen blanks after timeout, but backlight remains on forever. "xset dpms
force off" has no effect. "vbetool dpms off" does turn off the backlight. Using
nvidia proprietary driver, "xset dpms force off" turns off backlight but then
has other issues (
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1268151
)

Curiously, and possibly related, "xset s activate" (via ssh and/or using sleep
1) has no effect. It does not blank the screen.

Possibly related, from Xorg.0.log:

    [    27.193] (II) NOUVEAU(0): No DPMS capabilities specified

version: nouveau from kernel 3.16.6-gentoo.

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[Bug 85459] DPMS not working on Dell M4800 / QHD+

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https://bugs.freedesktop.org/show_bug.cgi?id=85459

--- Comment #1 from Ed Santiago <freedesktop-aVMt7ygKTj2t/hvpvFFPbQ@public.gmane.org> ---
Problem persists on kernel 4.0.5 xorg-server 1.16.4

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[Bug 85459] DPMS not working on Dell M4800 / QHD+

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https://bugs.freedesktop.org/show_bug.cgi?id=85459

Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

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

--- Comment #2 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
-- 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/142.

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