Bug 93795 - G98: GL(X) compositing - XRandR DPMS trouble
Summary: G98: GL(X) compositing - XRandR DPMS trouble
Status: NEW
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/nouveau (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Nouveau Project
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-01-20 16:18 UTC by poma
Modified: 2016-04-06 11:12 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
GLX: KF5 XRandR DPMS (81.49 KB, image/gif)
2016-01-22 16:36 UTC, poma
no flags Details
XRender: KF5 XRandR DPMS (72.84 KB, image/gif)
2016-01-22 16:39 UTC, poma
no flags Details

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Description poma 2016-01-20 16:18:17 UTC
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.
Comment 1 poma 2016-01-22 16:36:17 UTC
Created attachment 121209 [details]
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
Comment 2 poma 2016-01-22 16:39:16 UTC
Created attachment 121210 [details]
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
Comment 3 poma 2016-04-06 11:12:12 UTC
Still there, with
X.Org X Server 1.18.3
OpenGL version string: 3.0 Mesa 11.2.0


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