Nouveau - Jan 2016 - [Bug 93795] New: G98: GL(X) compositing - XRandR DPMS trouble

https://bugs.freedesktop.org/show_bug.cgi?id=93795

            Bug ID: 93795
           Summary: G98: GL(X) compositing - XRandR DPMS trouble
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: pomidorabelisima at gmail.com
        QA Contact: xorg-team at lists.x.org

The case with the Xfce GLX compositing is,
output disablement/enablement via xrandr:
$ xrandr --output <output> --off ; xrandr --auto
produces unusable session screen - the mouse cursor is visible and motile, but
the rest of the screen is as blanked,
and the only thing left is to zap the xserver and re-log.

Both, Xfce(Xfwm) XRender compositing and DRI3, are NOT problematic in this
sense.


The case with the GNOME GL compositing is not essentially different,
output disablement/enablement via xrandr produces clutter/mutter/scooter
breakage,
thus gnome-shell terminates with signal SIGSEGV thereby reappears display
manager greeter screen.
https://bugzilla.redhat.com/attachment.cgi?id=1106815


The case with the KDE GL compositing is comparable with the Xfce one.

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=93800

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--- Comment #1 from poma <pomidorabelisima at gmail.com> ---
Created attachment 121209
  --> https://bugs.freedesktop.org/attachment.cgi?id=121209&action=edit
GLX: KF5 XRandR DPMS


Screenshot postquam output enablement
$ xrandr --output DVI-I-1 --off ; sleep 5 ; xrandr --auto ; sleep 5 ; import
-window root screenie.png

GLX: remaining "fragment" of the screen can be seen in the top left
corner,
session screen is unusable

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--- Comment #2 from poma <pomidorabelisima at gmail.com> ---
Created attachment 121210
  --> https://bugs.freedesktop.org/attachment.cgi?id=121210&action=edit
XRender: KF5 XRandR DPMS


Screenshot postquam output enablement
$ xrandr --output DVI-I-1 --off ; sleep 5 ; xrandr --auto ; sleep 5 ; import
-window root screenie.png

XRender: KDE is literally falling apart, but the session is still usable

$ coredumpctl | awk '{print $10}'
...
/usr/libexec/drkonqi
/usr/bin/kdeinit5
/usr/bin/systemsettings5
/usr/bin/python3.5
/usr/bin/kactivitymanagerd
/usr/bin/python3.5
/usr/bin/kactivitymanagerd

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Joshua <clark at medstore.ml> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://url.dsl.pp.ua/875575
                   |                            |/pils/page.php

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|http://url.dsl.pp.ua/875575 |
                   |/pils/page.php              |

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--- Comment #3 from poma <pomidorabelisima at gmail.com> ---
Still there, with
X.Org X Server 1.18.3
OpenGL version string: 3.0 Mesa 11.2.0

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

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

--- Comment #4 from Martin Peres <martin.peres at free.fr> ---
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